{"id":105830,"date":"2026-09-16T08:48:33","date_gmt":"2026-09-16T00:48:33","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/105830.html"},"modified":"2026-09-16T08:48:33","modified_gmt":"2026-09-16T00:48:33","slug":"wpf-%e8%af%a6%e7%bb%86%e5%85%a5%e9%97%a8%e6%95%99%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/105830.html","title":{"rendered":"WPF \u8be6\u7ec6\u5165\u95e8\u6559\u7a0b"},"content":{"rendered":"<h2>WPF \u8be6\u7ec6\u5165\u95e8\u6559\u7a0b&#xff08;\u57fa\u4e8e .NET 8&#xff09;<\/h2>\n<p>\u9762\u5411\u96f6\u57fa\u7840\u6216\u4ece WinForms \u8f6c\u8fc7\u6765\u7684\u5f00\u53d1\u8005&#xff0c;\u5185\u5bb9\u7531\u6d45\u5165\u6df1&#xff0c;\u6bcf\u4e2a\u77e5\u8bc6\u70b9\u90fd\u914d\u53ef\u8fd0\u884c\u7684\u5c0f\u6848\u4f8b\u3002<\/p>\n<p>\u7248\u672c\u8bf4\u660e&#xff1a;\u672c\u6587\u5168\u90e8\u793a\u4f8b\u57fa\u4e8e .NET 8 &#043; WPF \u7f16\u5199&#xff0c;\u4f7f\u7528 C# 12&#xff0c;\u53ef\u7a7a\u5f15\u7528\u7c7b\u578b&#xff08;Nullable&#xff09;\u5df2\u5f00\u542f\u3002\u6587\u4e2d\u6d89\u53ca string? \u6807\u6ce8\u7b49\u8bed\u6cd5\u5747\u4ee5 .NET 8 \u4e3a\u51c6\u3002<\/p>\n<p>\u7248\u672c\u8fb9\u754c\u63d0\u793a&#xff1a;<\/p>\n<ul>\n<li>\u672c\u6587\u4e0d\u4f7f\u7528 Grid.ColumnDefinitions&#061;&#034;&#8230;&#034; \/ RowDefinitions&#061;&#034;&#8230;&#034; \u5b57\u7b26\u4e32\u7b80\u5199\u3001StackPanel.Spacing \u7b49\u8bed\u6cd5&#xff0c;\u56e0\u4e3a\u5b83\u4eec\u662f .NET 9 \u624d\u52a0\u5165 WPF \u7684\u65b0\u7279\u6027&#xff0c;\u5728 .NET 8 \u4e0a\u4f1a\u7f16\u8bd1\/\u89e3\u6790\u5931\u8d25\u3002<\/li>\n<li>\u5982\u679c\u4f60\u4f7f\u7528 .NET 9&#043;&#xff0c;\u53ef\u4ee5\u989d\u5916\u4e86\u89e3\u8fd9\u4e9b\u7b80\u5199&#xff08;\u89c1 5.7 \u8282&#xff09;\u3002<\/li>\n<\/ul>\n<hr \/>\n<h3>\u76ee\u5f55<\/h3>\n<li>WPF \u662f\u4ec0\u4e48<\/li>\n<li>\u73af\u5883\u51c6\u5907\u4e0e\u7b2c\u4e00\u4e2a\u7a0b\u5e8f<\/li>\n<li>\u9879\u76ee\u7ed3\u6784\u89e3\u6790<\/li>\n<li>XAML \u57fa\u7840\u8bed\u6cd5<\/li>\n<li>\u5e03\u5c40\u7cfb\u7edf<\/li>\n<li>\u5e38\u7528\u63a7\u4ef6<\/li>\n<li>\u4e8b\u4ef6\u5904\u7406<\/li>\n<li>\u6570\u636e\u7ed1\u5b9a<\/li>\n<li>\u6837\u5f0f\u3001\u89e6\u53d1\u5668\u4e0e\u6a21\u677f<\/li>\n<li>\u8d44\u6e90\u5b57\u5178<\/li>\n<li>MVVM \u6a21\u5f0f<\/li>\n<li>\u4f9d\u8d56\u5c5e\u6027\u4e0e\u9644\u52a0\u5c5e\u6027<\/li>\n<li>\u7efc\u5408\u6848\u4f8b&#xff1a;\u5f85\u529e\u4e8b\u9879<\/li>\n<li>\u52a8\u753b\u5165\u95e8<\/li>\n<li>\u5b66\u4e60\u5efa\u8bae\u4e0e\u5e38\u89c1\u5751<\/li>\n<hr \/>\n<h3>\u4e00\u3001WPF \u662f\u4ec0\u4e48<\/h3>\n<p>WPF&#xff08;Windows Presentation Foundation&#xff09;\u662f\u5fae\u8f6f\u63a8\u51fa\u7684\u684c\u9762 UI \u6846\u67b6&#xff0c;\u8fd0\u884c\u5728 .NET \u4e4b\u4e0a\u3002<\/p>\n<h4>\u4e0e WinForms \u7684\u6838\u5fc3\u533a\u522b<\/h4>\n<table>\n<tr>\u5bf9\u6bd4\u9879WinFormsWPF<\/tr>\n<tbody>\n<tr>\n<td>UI \u63cf\u8ff0<\/td>\n<td>C# \u4ee3\u7801\u62d6\u63a7\u4ef6<\/td>\n<td>XAML \u58f0\u660e\u5f0f\u63cf\u8ff0<\/td>\n<\/tr>\n<tr>\n<td>\u5e03\u5c40<\/td>\n<td>\u7edd\u5bf9\u5750\u6807&#xff08;Left\/Top&#xff09;<\/td>\n<td>\u5e03\u5c40\u5bb9\u5668\u81ea\u52a8\u6392\u5217<\/td>\n<\/tr>\n<tr>\n<td>\u6e32\u67d3<\/td>\n<td>GDI&#043;<\/td>\n<td>DirectX&#xff08;\u77e2\u91cf\u3001\u786c\u4ef6\u52a0\u901f&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>\u6570\u636e\u5c55\u793a<\/td>\n<td>\u624b\u52a8\u8d4b\u503c label.Text &#061; &#8230;<\/td>\n<td>\u6570\u636e\u7ed1\u5b9a\u81ea\u52a8\u540c\u6b65<\/td>\n<\/tr>\n<tr>\n<td>\u5916\u89c2\u5b9a\u5236<\/td>\n<td>\u56f0\u96be<\/td>\n<td>\u6837\u5f0f\/\u6a21\u677f\u4efb\u610f\u91cd\u5199<\/td>\n<\/tr>\n<tr>\n<td>\u5206\u8fa8\u7387<\/td>\n<td>\u7f29\u653e\u6613\u6a21\u7cca<\/td>\n<td>\u77e2\u91cf\u7f29\u653e\u6e05\u6670<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u4e00\u53e5\u8bdd\u7406\u89e3 WPF \u7684\u6838\u5fc3\u601d\u60f3&#xff1a;UI \u548c\u6570\u636e\u5206\u79bb&#xff0c;\u7528 XAML \u63cf\u8ff0\u201c\u957f\u4ec0\u4e48\u6837\u201d&#xff0c;\u7528 C# \u63cf\u8ff0\u201c\u505a\u4ec0\u4e48\u4e8b\u201d&#xff0c;\u4e24\u8005\u901a\u8fc7\u6570\u636e\u7ed1\u5b9a\u8fde\u63a5\u3002<\/p>\n<hr \/>\n<h3>\u4e8c\u3001\u73af\u5883\u51c6\u5907\u4e0e\u7b2c\u4e00\u4e2a\u7a0b\u5e8f<\/h3>\n<h4>1. \u5b89\u88c5<\/h4>\n<ul>\n<li>\u4e0b\u8f7d Visual Studio 2022&#xff08;17.8 \u6216\u66f4\u9ad8\u7248\u672c&#xff0c;\u793e\u533a\u7248\u514d\u8d39&#xff09;<\/li>\n<li>\u5b89\u88c5\u65f6\u52fe\u9009\u5de5\u4f5c\u8d1f\u8f7d&#xff1a;.NET \u684c\u9762\u5f00\u53d1<\/li>\n<li>\u786e\u8ba4\u5df2\u5b89\u88c5 .NET 8 SDK<\/li>\n<\/ul>\n<h4>2. \u521b\u5efa\u9879\u76ee<\/h4>\n<li>\u6253\u5f00 VS \u2192 \u521b\u5efa\u65b0\u9879\u76ee<\/li>\n<li>\u641c\u7d22\u5e76\u9009\u62e9 WPF \u5e94\u7528\u7a0b\u5e8f&#xff08;\u63cf\u8ff0\u91cc\u4f1a\u5199 \u201cC# \/ .NET\u201d&#xff09;<\/li>\n<li>\u9879\u76ee\u540d&#xff1a;WpfDemo \u2192 \u4e0b\u4e00\u6b65<\/li>\n<li>\u6846\u67b6\u9009\u62e9 .NET 8.0 (\u957f\u671f\u652f\u6301) \u2192 \u521b\u5efa<\/li>\n<p>\u26a0\ufe0f \u4e0d\u8981\u9009 \u201cWPF \u5e94\u7528 (.NET Framework)\u201d&#xff0c;\u90a3\u662f\u65e7\u7684 .NET Framework \u7248\u672c&#xff0c;\u8bed\u6cd5\u548c\u9879\u76ee\u7ed3\u6784\u7565\u6709\u4e0d\u540c\u3002<\/p>\n<h4>3. \u8fd0\u884c<\/h4>\n<p>\u76f4\u63a5\u6309 F5&#xff0c;\u4f1a\u770b\u5230\u4e00\u4e2a\u7a7a\u767d\u7a97\u53e3\u3002\u606d\u559c&#xff0c;\u7b2c\u4e00\u4e2a WPF \u7a0b\u5e8f\u8dd1\u8d77\u6765\u4e86\u3002<\/p>\n<h4>4. \u6dfb\u52a0\u4e00\u4e2a\u6309\u94ae<\/h4>\n<p>\u6253\u5f00 MainWindow.xaml&#xff0c;\u628a &lt;Grid&gt; &#8230; &lt;\/Grid&gt; \u90e8\u5206\u6539\u6210&#xff1a;<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Grid<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button<\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u70b9\u6211<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Width<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>120<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Height<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>40<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n            <span class=\"token attr-name\">HorizontalAlignment<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Center<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">VerticalAlignment<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Center<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n            <span class=\"token attr-name\">Click<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Button_Click<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Grid<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>\u7136\u540e\u5728 MainWindow.xaml.cs \u4e2d\u6dfb\u52a0\u4e8b\u4ef6\u65b9\u6cd5&#xff1a;<\/p>\n<p><span class=\"token keyword\">private<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">void<\/span><\/span> <span class=\"token function\">Button_Click<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">object<\/span><\/span> sender<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">RoutedEventArgs<\/span> e<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    MessageBox<span class=\"token punctuation\">.<\/span><span class=\"token function\">Show<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u4f60\u597d&#xff0c;WPF&#xff01;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u518d\u6309 F5&#xff0c;\u70b9\u51fb\u6309\u94ae\u5c31\u4f1a\u5f39\u7a97\u3002<\/p>\n<p>\u5c0f\u6280\u5de7&#xff1a;\u5728 XAML \u4e2d\u5199 Click&#061;&#034; \u540e\u6309 Tab \u952e&#xff0c;VS \u4f1a\u81ea\u52a8\u751f\u6210\u4e8b\u4ef6\u65b9\u6cd5\u3002<\/p>\n<hr \/>\n<h3>\u4e09\u3001\u9879\u76ee\u7ed3\u6784\u89e3\u6790<\/h3>\n<p>\u521b\u5efa\u9879\u76ee\u540e\u4f60\u4f1a\u770b\u5230\u8fd9\u4e9b\u6587\u4ef6&#xff1a;<\/p>\n<p>WpfDemo\/<br \/>\n\u251c\u2500\u2500 App.xaml            \u7a0b\u5e8f\u5165\u53e3&#xff0c;\u914d\u7f6e\u542f\u52a8\u7a97\u53e3\u548c\u5168\u5c40\u8d44\u6e90<br \/>\n\u251c\u2500\u2500 App.xaml.cs         App \u7684\u4ee3\u7801\u540e\u7f6e<br \/>\n\u251c\u2500\u2500 MainWindow.xaml     \u4e3b\u7a97\u53e3\u7684 UI \u63cf\u8ff0<br \/>\n\u2514\u2500\u2500 MainWindow.xaml.cs  \u4e3b\u7a97\u53e3\u7684\u903b\u8f91\u4ee3\u7801<\/p>\n<h4>App.xaml<\/h4>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Application<\/span> <span class=\"token attr-name\"><span class=\"token namespace\">x:<\/span>Class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>WpfDemo.App<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n             <span class=\"token attr-name\">xmlns<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>http:\/\/schemas.microsoft.com\/winfx\/2006\/xaml\/presentation<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n             <span class=\"token attr-name\"><span class=\"token namespace\">xmlns:<\/span>x<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>http:\/\/schemas.microsoft.com\/winfx\/2006\/xaml<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n             <span class=\"token attr-name\">StartupUri<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>MainWindow.xaml<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Application.Resources<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token comment\">&lt;!&#8211; \u5168\u5c40\u8d44\u6e90\u653e\u8fd9\u91cc &#8211;&gt;<\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Application.Resources<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Application<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>StartupUri \u6307\u5b9a\u7a0b\u5e8f\u542f\u52a8\u65f6\u663e\u793a\u54ea\u4e2a\u7a97\u53e3\u3002<\/p>\n<h4>MainWindow.xaml<\/h4>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Window<\/span> <span class=\"token attr-name\"><span class=\"token namespace\">x:<\/span>Class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>WpfDemo.MainWindow<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n        <span class=\"token attr-name\">xmlns<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>http:\/\/schemas.microsoft.com\/winfx\/2006\/xaml\/presentation<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n        <span class=\"token attr-name\"><span class=\"token namespace\">xmlns:<\/span>x<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>http:\/\/schemas.microsoft.com\/winfx\/2006\/xaml<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n        <span class=\"token attr-name\">Title<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>MainWindow<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Height<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>450<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Width<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>800<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Grid<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token comment\">&lt;!&#8211; \u5185\u5bb9\u533a &#8211;&gt;<\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Grid<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Window<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<h4>\u547d\u540d\u7a7a\u95f4\u8bf4\u660e<\/h4>\n<table>\n<tr>\u547d\u540d\u7a7a\u95f4\u4f5c\u7528<\/tr>\n<tbody>\n<tr>\n<td>xmlns&#061;&#034;&#8230;presentation&#034;<\/td>\n<td>WPF \u63a7\u4ef6&#xff08;Button\u3001Grid \u7b49&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>xmlns:x&#061;&#034;&#8230;xaml&#034;<\/td>\n<td>XAML \u8bed\u8a00\u7279\u6027&#xff08;x:Name\u3001x:Class \u7b49&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>xmlns:local&#061;&#034;clr-namespace:WpfDemo&#034;<\/td>\n<td>\u5f53\u524d\u9879\u76ee\u4e2d\u7684\u81ea\u5b9a\u4e49\u7c7b\u578b&#xff08;\u81ea\u5b9a\u4e49\u63a7\u4ef6\u3001\u8f6c\u6362\u5668\u7b49&#xff09;&#xff0c;\u547d\u540d\u7a7a\u95f4\u6309\u5b9e\u9645\u9879\u76ee\u540d\u66ff\u6362<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u4ee3\u7801\u540e\u7f6e&#xff08;Code-Behind&#xff09;&#xff1a;x:Class&#061;&#034;WpfDemo.MainWindow&#034; \u628a XAML \u548c MainWindow.xaml.cs \u4e2d\u7684\u7c7b\u5173\u8054\u8d77\u6765&#xff0c;XAML \u91cc x:Name \u5b9a\u4e49\u7684\u63a7\u4ef6\u53ef\u4ee5\u5728 C# \u4e2d\u76f4\u63a5\u8bbf\u95ee\u3002<\/p>\n<h4>.csproj \u5173\u952e\u914d\u7f6e<\/h4>\n<p>.NET 8 WPF \u9879\u76ee\u6587\u4ef6\u5927\u81f4\u5982\u4e0b&#xff0c;Nullable \u9ed8\u8ba4\u5f00\u542f&#xff1a;<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Project<\/span> <span class=\"token attr-name\">Sdk<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Microsoft.NET.Sdk<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>PropertyGroup<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>OutputType<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>WinExe<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>OutputType<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>TargetFramework<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>net8.0-windows<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>TargetFramework<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Nullable<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>enable<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Nullable<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>UseWPF<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>true<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>UseWPF<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n  <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>PropertyGroup<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Project<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>\u56e0\u4e3a Nullable \u662f\u5f00\u542f\u7684&#xff0c;\u540e\u9762\u5199\u4ee3\u7801\u65f6\u5b57\u7b26\u4e32\u3001\u59d4\u6258\u7b49\u7c7b\u578b\u9700\u8981\u52a0 ? \u6807\u6ce8&#xff0c;\u5426\u5219\u4f1a\u6709\u7f16\u8bd1\u5668\u8b66\u544a\u3002<\/p>\n<hr \/>\n<h3>\u56db\u3001XAML \u57fa\u7840\u8bed\u6cd5<\/h3>\n<p>XAML \u672c\u8d28\u662f XML&#xff0c;\u7528\u6807\u7b7e\u63cf\u8ff0\u5bf9\u8c61&#xff0c;\u7528\u5c5e\u6027\u63cf\u8ff0\u7279\u5f81\u3002<\/p>\n<h4>4.1 \u5c5e\u6027\u8d4b\u503c<\/h4>\n<p>\u7b80\u5355\u5c5e\u6027&#xff08;\u5b57\u7b26\u4e32\u3001\u6570\u5b57&#xff09;&#xff1a;<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button<\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u786e\u5b9a<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Width<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>100<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><\/p>\n<p>\u590d\u6742\u5c5e\u6027&#xff08;\u5bf9\u8c61\u3001\u96c6\u5408&#xff09;\u7528\u201c\u5c5e\u6027\u5143\u7d20\u8bed\u6cd5\u201d&#xff1a;<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button<\/span> <span class=\"token attr-name\">Width<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>100<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button.Content<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>StackPanel<\/span> <span class=\"token attr-name\">Orientation<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Horizontal<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n            <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>TextBlock<\/span> <span class=\"token attr-name\">Text<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u56fe\u6807<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n            <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>TextBlock<\/span> <span class=\"token attr-name\">Text<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u6587\u5b57<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>StackPanel<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Button.Content<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Button<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<h4>4.2 \u7279\u6b8a\u5b57\u7b26\u8f6c\u4e49<\/h4>\n<table>\n<tr>\u5b57\u7b26\u8f6c\u4e49<\/tr>\n<tbody>\n<tr>\n<td>&lt;<\/td>\n<td>&amp;lt;<\/td>\n<\/tr>\n<tr>\n<td>&gt;<\/td>\n<td>&amp;gt;<\/td>\n<\/tr>\n<tr>\n<td>&amp;<\/td>\n<td>&amp;amp;<\/td>\n<\/tr>\n<tr>\n<td>&#034;<\/td>\n<td>&amp;quot;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>4.3 x:Name \u4e0e x:Class<\/h4>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>TextBox<\/span> <span class=\"token attr-name\"><span class=\"token namespace\">x:<\/span>Name<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>txtName<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token punctuation\">\/&gt;<\/span><\/span><\/p>\n<p><span class=\"token comment\">\/\/ C# \u4e2d\u53ef\u76f4\u63a5\u4f7f\u7528<\/span><br \/>\n<span class=\"token class-name\"><span class=\"token keyword\">string<\/span><\/span> text <span class=\"token operator\">&#061;<\/span> txtName<span class=\"token punctuation\">.<\/span>Text<span class=\"token punctuation\">;<\/span><\/p>\n<h4>4.4 \u5e38\u7528\u6807\u8bb0\u6269\u5c55&#xff08;Markup Extension&#xff09;<\/h4>\n<p>\u6807\u8bb0\u6269\u5c55\u7528 { } \u5305\u88f9&#xff0c;\u662f XAML \u91cc\u201c\u52a8\u6001\u53d6\u503c\u201d\u7684\u8bed\u6cd5\u7cd6\u3002<\/p>\n<table>\n<tr>\u6807\u8bb0\u6269\u5c55\u7528\u9014<\/tr>\n<tbody>\n<tr>\n<td>{Binding &#8230;}<\/td>\n<td>\u6570\u636e\u7ed1\u5b9a<\/td>\n<\/tr>\n<tr>\n<td>{StaticResource Key}<\/td>\n<td>\u5f15\u7528\u8d44\u6e90&#xff08;\u52a0\u8f7d\u65f6\u4e00\u6b21\u6027\u67e5\u627e&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>{DynamicResource Key}<\/td>\n<td>\u5f15\u7528\u8d44\u6e90&#xff08;\u6bcf\u6b21\u4f7f\u7528\u67e5\u627e&#xff0c;\u53ef\u6362\u80a4&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>{x:Static Namespace.Type.Member}<\/td>\n<td>\u5f15\u7528\u9759\u6001\u5b57\u6bb5\/\u5c5e\u6027\/\u5e38\u91cf<\/td>\n<\/tr>\n<tr>\n<td>{x:Type Namespace.Type}<\/td>\n<td>\u5f15\u7528\u7c7b\u578b\u5bf9\u8c61<\/td>\n<\/tr>\n<tr>\n<td>{x:Null}<\/td>\n<td>\u663e\u5f0f\u8bbe\u7f6e\u4e3a null<\/td>\n<\/tr>\n<tr>\n<td>{x:Array Type&#061;&#8230;}<\/td>\n<td>\u58f0\u660e\u6570\u7ec4<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u793a\u4f8b&#xff1a;<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>TextBlock<\/span> <span class=\"token attr-name\">Text<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>{x:Static System:Environment.MachineName}<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n           <span class=\"token attr-name\">Foreground<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>{StaticResource PrimaryBrush}<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><\/p>\n<h4>4.5 \u6ce8\u91ca<\/h4>\n<p><span class=\"token comment\">&lt;!&#8211; \u8fd9\u662f\u6ce8\u91ca &#8211;&gt;<\/span><\/p>\n<hr \/>\n<h3>\u4e94\u3001\u5e03\u5c40\u7cfb\u7edf<\/h3>\n<p>WPF \u5e03\u5c40\u7684\u6838\u5fc3\u601d\u60f3&#xff1a;\u7236\u5bb9\u5668\u8d1f\u8d23\u5b89\u6392\u5b50\u5143\u7d20\u7684\u4f4d\u7f6e\u548c\u5927\u5c0f&#xff0c;\u800c\u4e0d\u662f\u5b50\u5143\u7d20\u81ea\u5df1\u5b9a\u5750\u6807\u3002<\/p>\n<h4>5.1 Grid&#xff08;\u6700\u5e38\u7528&#xff09;<\/h4>\n<p>\u7528\u884c\u548c\u5217\u5212\u5206\u533a\u57df&#xff1a;<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Grid<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Grid.RowDefinitions<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>RowDefinition<\/span> <span class=\"token attr-name\">Height<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Auto<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>RowDefinition<\/span> <span class=\"token attr-name\">Height<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>*<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>RowDefinition<\/span> <span class=\"token attr-name\">Height<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>2*<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Grid.RowDefinitions<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Grid.ColumnDefinitions<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>ColumnDefinition<\/span> <span class=\"token attr-name\">Width<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>100<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>ColumnDefinition<\/span> <span class=\"token attr-name\">Width<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>*<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Grid.ColumnDefinitions<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button<\/span> <span class=\"token attr-name\">Grid.Row<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>0<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Grid.Column<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>0<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u5de6\u4e0a<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button<\/span> <span class=\"token attr-name\">Grid.Row<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>0<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Grid.Column<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>1<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u53f3\u4e0a<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button<\/span> <span class=\"token attr-name\">Grid.Row<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>1<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Grid.Column<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>0<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Grid.ColumnSpan<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>2<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u8de8\u4e24\u5217<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button<\/span> <span class=\"token attr-name\">Grid.Row<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>1<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Grid.Column<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>0<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Grid.RowSpan<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>2<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u8de8\u4e24\u884c<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Grid<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>Height\/Width \u7684\u4e09\u79cd\u53d6\u503c&#xff1a;<\/p>\n<ul>\n<li>Auto&#xff1a;\u6839\u636e\u5185\u5bb9\u81ea\u52a8<\/li>\n<li>*&#xff1a;\u6309\u6bd4\u4f8b\u5206\u914d\u5269\u4f59\u7a7a\u95f4&#xff08;2* \u8868\u793a\u5360\u4e24\u4efd&#xff09;<\/li>\n<li>\u56fa\u5b9a\u503c&#xff1a;\u5982 100<\/li>\n<\/ul>\n<p>\u26a0\ufe0f \u6ce8\u610f&#xff1a;Grid.Row\u3001Grid.Column\u3001Grid.RowSpan\u3001Grid.ColumnSpan \u90fd\u662f\u4ece 0 \u5f00\u59cb\u7684\u7d22\u5f15\u3002Grid.RowSpan \u4e0d\u8981\u8d85\u51fa\u5b9e\u9645\u884c\u6570&#xff0c;\u5426\u5219\u4f1a\u9759\u9ed8\u5931\u6548\u6216\u5e03\u5c40\u5f02\u5e38\u3002\u4e0a\u9762\u793a\u4f8b\u4e2d Grid.Row&#061;&#034;1&#034; Grid.RowSpan&#061;&#034;2&#034; \u8868\u793a\u4ece\u7b2c 1 \u884c\u8d77\u8de8 2 \u884c&#xff08;\u5373\u7b2c 1\u30012 \u884c&#xff09;&#xff0c;\u5171 3 \u884c&#xff0c;\u6b63\u597d\u7528\u6ee1\u3002<\/p>\n<h4>5.2 StackPanel<\/h4>\n<p>\u6309\u987a\u5e8f\u5806\u53e0&#xff0c;\u4e0d\u6362\u884c&#xff1a;<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>StackPanel<\/span> <span class=\"token attr-name\">Orientation<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Vertical<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button<\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u6309\u94ae1<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Margin<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>0,0,0,8<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button<\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u6309\u94ae2<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Margin<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>0,0,0,8<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button<\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u6309\u94ae3<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>StackPanel<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>Orientation \u53ef\u9009 Vertical&#xff08;\u9ed8\u8ba4&#xff09;\u6216 Horizontal\u3002<\/p>\n<p>&#x1f4a1; \u5173\u4e8e Spacing \u5c5e\u6027&#xff1a;.NET 9 \u8d77 WPF \u7684 StackPanel \u589e\u52a0\u4e86 Spacing \u5c5e\u6027&#xff0c;\u7528\u4e8e\u7edf\u4e00\u8bbe\u7f6e\u5b50\u5143\u7d20\u95f4\u8ddd\u3002\u4f46 .NET 8 \u4e0d\u652f\u6301&#xff0c;\u8bf7\u4f7f\u7528 Margin&#xff08;\u6216\u7528 Grid \u7684\u884c\u5217\u95f4\u8ddd&#xff09;\u5b9e\u73b0\u76f8\u540c\u6548\u679c\u3002.NET 9&#043; \u7684\u65b0\u7279\u6027\u89c1 5.7 \u8282\u3002<\/p>\n<h4>5.3 DockPanel<\/h4>\n<p>\u8d34\u8fb9\u505c\u9760&#xff0c;\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u586b\u6ee1\u5269\u4f59\u7a7a\u95f4&#xff1a;<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>DockPanel<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button<\/span> <span class=\"token attr-name\">DockPanel.Dock<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Top<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u9876\u90e8<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button<\/span> <span class=\"token attr-name\">DockPanel.Dock<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Left<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u5de6\u4fa7<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button<\/span> <span class=\"token attr-name\">DockPanel.Dock<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Bottom<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u5e95\u90e8<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button<\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u586b\u5145\u5269\u4f59<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>DockPanel<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>\u8bbe\u7f6e LastChildFill&#061;&#034;False&#034; \u53ef\u8ba9\u6700\u540e\u4e00\u4e2a\u4e5f\u4e0d\u586b\u5145\u3002<\/p>\n<h4>5.4 WrapPanel<\/h4>\n<p>\u81ea\u52a8\u6362\u884c\u7684\u6d41\u5f0f\u5e03\u5c40&#xff0c;\u9002\u5408\u6807\u7b7e\u5899\u3001\u56fe\u7247\u5217\u8868&#xff1a;<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>WrapPanel<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button<\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u6807\u7b7e1<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Margin<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>4<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button<\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u6807\u7b7e2<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Margin<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>4<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n    <span class=\"token comment\">&lt;!&#8211; \u8d85\u51fa\u5bbd\u5ea6\u4f1a\u81ea\u52a8\u6362\u884c &#8211;&gt;<\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>WrapPanel<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<h4>5.5 Canvas<\/h4>\n<p>\u7edd\u5bf9\u5750\u6807\u5b9a\u4f4d&#xff0c;\u7c7b\u4f3c WinForms&#xff1a;<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Canvas<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button<\/span> <span class=\"token attr-name\">Canvas.Left<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>50<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Canvas.Top<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>30<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u5750\u6807(50,30)<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Canvas<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<h4>5.6 \u5e03\u5c40\u9009\u62e9\u5efa\u8bae<\/h4>\n<table>\n<tr>\u9700\u6c42\u63a8\u8350<\/tr>\n<tbody>\n<tr>\n<td>\u8868\u5355\u3001\u590d\u6742\u5206\u533a<\/td>\n<td>Grid<\/td>\n<\/tr>\n<tr>\n<td>\u5782\u76f4\/\u6c34\u5e73\u6392\u5217<\/td>\n<td>StackPanel<\/td>\n<\/tr>\n<tr>\n<td>\u9875\u9762\u6846\u67b6&#xff08;\u5934\/\u4fa7\/\u5e95\/\u4e2d&#xff09;<\/td>\n<td>DockPanel<\/td>\n<\/tr>\n<tr>\n<td>\u81ea\u52a8\u6362\u884c\u5217\u8868<\/td>\n<td>WrapPanel<\/td>\n<\/tr>\n<tr>\n<td>\u7ed8\u56fe\u3001\u7cbe\u786e\u5b9a\u4f4d<\/td>\n<td>Canvas<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>5.7 .NET 9&#043; \u65b0\u7279\u6027&#xff08;\u9009\u8bfb&#xff09;<\/h4>\n<p>\u4ee5\u4e0b\u8bed\u6cd5 .NET 8 \u4e0d\u652f\u6301&#xff0c;\u4ec5\u5728 .NET 9 \u53ca\u4ee5\u4e0a\u53ef\u7528\u3002\u5982\u679c\u4f60\u7684\u9879\u76ee\u5df2\u5347\u7ea7\u5230 .NET 9&#xff0c;\u53ef\u4ee5\u4f7f\u7528\u5b83\u4eec\u8ba9 XAML \u66f4\u7b80\u6d01\u3002<\/p>\n<p>Grid \u884c\u5217\u7b80\u5199&#xff1a;<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Grid<\/span> <span class=\"token attr-name\">ColumnDefinitions<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>100,*<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">RowDefinitions<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Auto,*,2*<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button<\/span> <span class=\"token attr-name\">Grid.Row<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>0<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Grid.Column<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>0<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u5de6\u4e0a<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button<\/span> <span class=\"token attr-name\">Grid.Row<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>0<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Grid.Column<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>1<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u53f3\u4e0a<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Grid<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>StackPanel.Spacing&#xff1a;<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>StackPanel<\/span> <span class=\"token attr-name\">Orientation<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Vertical<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Spacing<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>8<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button<\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u6309\u94ae1<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button<\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u6309\u94ae2<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>StackPanel<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>.NET 8 \u9879\u76ee\u8bf7\u4f7f\u7528\u672c\u6587\u5176\u4ed6\u7ae0\u8282\u7684\u5b8c\u6574\u5199\u6cd5\u3002<\/p>\n<hr \/>\n<h3>\u516d\u3001\u5e38\u7528\u63a7\u4ef6<\/h3>\n<h4>6.1 \u6587\u672c\u7c7b<\/h4>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>TextBlock<\/span> <span class=\"token attr-name\">Text<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u53ea\u8bfb\u6587\u672c<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">FontSize<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>16<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Foreground<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Gray<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>TextBox<\/span> <span class=\"token attr-name\">Text<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u53ef\u7f16\u8f91\u6587\u672c<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Width<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>200<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>PasswordBox<\/span> <span class=\"token attr-name\">Width<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>200<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>RichTextBox<\/span> <span class=\"token attr-name\">Height<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>100<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><\/p>\n<h4>6.2 \u6309\u94ae\u7c7b<\/h4>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button<\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u666e\u901a\u6309\u94ae<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Click<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Button_Click<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>RepeatButton<\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u957f\u6309\u91cd\u590d<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>ToggleButton<\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u5f00\u5173<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>CheckBox<\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u590d\u9009\u6846<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">IsChecked<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>True<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>RadioButton<\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u5355\u9009A<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">GroupName<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>g1<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">IsChecked<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>True<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>RadioButton<\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u5355\u9009B<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">GroupName<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>g1<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><\/p>\n<h4>6.3 \u5217\u8868\u7c7b<\/h4>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>ListBox<\/span> <span class=\"token attr-name\"><span class=\"token namespace\">x:<\/span>Name<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>listBox<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Height<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>150<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>ListBoxItem<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\u9009\u98791<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>ListBoxItem<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>ListBoxItem<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\u9009\u98792<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>ListBoxItem<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>ListBox<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>ComboBox<\/span> <span class=\"token attr-name\"><span class=\"token namespace\">x:<\/span>Name<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>comboBox<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Width<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>150<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>ComboBoxItem<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\u5317\u4eac<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>ComboBoxItem<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>ComboBoxItem<\/span><span class=\"token punctuation\">&gt;<\/span><\/span>\u4e0a\u6d77<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>ComboBoxItem<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>ComboBox<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<h4>6.4 \u6570\u503c\u4e0e\u8fdb\u5ea6<\/h4>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Slider<\/span> <span class=\"token attr-name\">Minimum<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>0<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Maximum<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>100<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Value<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>30<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Width<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>200<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>ProgressBar<\/span> <span class=\"token attr-name\">Value<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>60<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Maximum<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>100<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Width<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>200<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Height<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>20<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><\/p>\n<h4>6.5 \u56fe\u7247<\/h4>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Image<\/span> <span class=\"token attr-name\">Source<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\/Images\/logo.png<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Width<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>100<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Height<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>100<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Stretch<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Uniform<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><\/p>\n<p>\u56fe\u7247\u9700\u5728\u9879\u76ee\u4e2d\u8bbe\u7f6e\u201c\u751f\u6210\u64cd\u4f5c\u201d\u4e3a Resource\u3002\u7b49\u4ef7\u7684 pack URI \u5199\u6cd5\u4e3a&#xff1a;<\/p>\n<p> <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Image<\/span> <span class=\"token attr-name\">Source<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>pack:\/\/application:,,,\/Images\/logo.png<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><\/p>\n<h4>6.6 \u5e38\u7528\u901a\u7528\u5c5e\u6027<\/h4>\n<table>\n<tr>\u5c5e\u6027\u8bf4\u660e<\/tr>\n<tbody>\n<tr>\n<td>Width \/ Height<\/td>\n<td>\u5bbd\u9ad8<\/td>\n<\/tr>\n<tr>\n<td>Margin<\/td>\n<td>\u5916\u8fb9\u8ddd&#xff08;\u5de6,\u4e0a,\u53f3,\u4e0b&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>Padding<\/td>\n<td>\u5185\u8fb9\u8ddd<\/td>\n<\/tr>\n<tr>\n<td>HorizontalAlignment<\/td>\n<td>Left \/ Center \/ Right \/ Stretch<\/td>\n<\/tr>\n<tr>\n<td>VerticalAlignment<\/td>\n<td>Top \/ Center \/ Bottom \/ Stretch<\/td>\n<\/tr>\n<tr>\n<td>Background \/ Foreground<\/td>\n<td>\u80cc\u666f \/ \u524d\u666f\u8272<\/td>\n<\/tr>\n<tr>\n<td>FontSize \/ FontFamily<\/td>\n<td>\u5b57\u4f53<\/td>\n<\/tr>\n<tr>\n<td>IsEnabled<\/td>\n<td>\u662f\u5426\u53ef\u7528<\/td>\n<\/tr>\n<tr>\n<td>Visibility<\/td>\n<td>Visible \/ Hidden \/ Collapsed<\/td>\n<\/tr>\n<tr>\n<td>ToolTip<\/td>\n<td>\u60ac\u505c\u63d0\u793a<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Hidden \u4e0e Collapsed \u7684\u533a\u522b&#xff1a;Hidden \u5360\u4f4d\u4f46\u4e0d\u53ef\u89c1&#xff0c;Collapsed \u4e0d\u5360\u4f4d\u3002<\/p>\n<hr \/>\n<h3>\u4e03\u3001\u4e8b\u4ef6\u5904\u7406<\/h3>\n<h4>7.1 \u5728 XAML \u4e2d\u7ed1\u5b9a\u4e8b\u4ef6<\/h4>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button<\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u70b9\u51fb<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Click<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>MyButton_Click<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><\/p>\n<p><span class=\"token keyword\">private<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">void<\/span><\/span> <span class=\"token function\">MyButton_Click<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">object<\/span><\/span> sender<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">RoutedEventArgs<\/span> e<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> btn <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span>Button<span class=\"token punctuation\">)<\/span>sender<span class=\"token punctuation\">;<\/span><br \/>\n    btn<span class=\"token punctuation\">.<\/span>Content <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;\u5df2\u70b9\u51fb&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>7.2 \u5728\u4ee3\u7801\u4e2d\u7ed1\u5b9a\u4e8b\u4ef6<\/h4>\n<p><span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> btn <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">Button<\/span> <span class=\"token punctuation\">{<\/span> Content <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;\u52a8\u6001\u6309\u94ae&#034;<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\nbtn<span class=\"token punctuation\">.<\/span>Click <span class=\"token operator\">&#043;&#061;<\/span> <span class=\"token punctuation\">(<\/span>s<span class=\"token punctuation\">,<\/span> e<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> MessageBox<span class=\"token punctuation\">.<\/span><span class=\"token function\">Show<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u52a8\u6001\u521b\u5efa\u5e76\u7ed1\u5b9a&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nrootPanel<span class=\"token punctuation\">.<\/span>Children<span class=\"token punctuation\">.<\/span><span class=\"token function\">Add<\/span><span class=\"token punctuation\">(<\/span>btn<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h4>7.3 \u5e38\u7528\u4e8b\u4ef6<\/h4>\n<table>\n<tr>\u63a7\u4ef6\u5e38\u7528\u4e8b\u4ef6<\/tr>\n<tbody>\n<tr>\n<td>Button<\/td>\n<td>Click<\/td>\n<\/tr>\n<tr>\n<td>TextBox<\/td>\n<td>TextChanged\u3001GotFocus\u3001LostFocus\u3001KeyDown<\/td>\n<\/tr>\n<tr>\n<td>Window<\/td>\n<td>Loaded\u3001Closing\u3001Closed<\/td>\n<\/tr>\n<tr>\n<td>ListBox<\/td>\n<td>SelectionChanged<\/td>\n<\/tr>\n<tr>\n<td>CheckBox<\/td>\n<td>Checked\u3001Unchecked<\/td>\n<\/tr>\n<tr>\n<td>\u901a\u7528<\/td>\n<td>MouseEnter\u3001MouseLeave\u3001MouseDown<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>7.4 \u8def\u7531\u4e8b\u4ef6&#xff08;\u7b80\u8981\u4e86\u89e3&#xff09;<\/h4>\n<p>WPF \u4e8b\u4ef6\u662f\u8def\u7531\u4e8b\u4ef6&#xff0c;\u53ef\u4ee5\u5728\u7236\u5bb9\u5668\u4e0a\u7edf\u4e00\u5904\u7406\u5b50\u5143\u7d20\u7684\u4e8b\u4ef6&#xff1a;<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>StackPanel<\/span> <span class=\"token attr-name\">Button.Click<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>AnyButton_Click<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button<\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>A<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button<\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>B<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>StackPanel<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p><span class=\"token keyword\">private<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">void<\/span><\/span> <span class=\"token function\">AnyButton_Click<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">object<\/span><\/span> sender<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">RoutedEventArgs<\/span> e<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ sender \u662f StackPanel&#xff0c;e.OriginalSource \u624d\u662f\u771f\u6b63\u88ab\u70b9\u7684\u6309\u94ae<\/span><br \/>\n    <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> btn <span class=\"token operator\">&#061;<\/span> e<span class=\"token punctuation\">.<\/span>OriginalSource <span class=\"token keyword\">as<\/span> <span class=\"token class-name\">Button<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    MessageBox<span class=\"token punctuation\">.<\/span><span class=\"token function\">Show<\/span><span class=\"token punctuation\">(<\/span><span class=\"token interpolation-string\"><span class=\"token string\">$&#034;\u70b9\u51fb\u4e86 <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span><span class=\"token expression language-csharp\">btn<span class=\"token punctuation\">?.<\/span>Content<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u82e5\u4e0d\u60f3\u8ba9\u4e8b\u4ef6\u7ee7\u7eed\u5192\u6ce1\u5230\u66f4\u4e0a\u5c42&#xff0c;\u53ef\u8bbe\u7f6e&#xff1a;<\/span><br \/>\n    <span class=\"token comment\">\/\/ e.Handled &#061; true;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<hr \/>\n<h3>\u516b\u3001\u6570\u636e\u7ed1\u5b9a&#xff08;\u91cd\u70b9&#xff09;<\/h3>\n<p>\u6570\u636e\u7ed1\u5b9a\u662f WPF \u7684\u7075\u9b42&#xff0c;\u638c\u63e1\u5b83\u5c31\u638c\u63e1\u4e86 WPF\u3002<\/p>\n<h4>8.1 \u6700\u7b80\u5355\u7684\u7ed1\u5b9a&#xff1a;\u5143\u7d20\u5230\u5143\u7d20<\/h4>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>StackPanel<\/span> <span class=\"token attr-name\">Margin<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>20<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Slider<\/span> <span class=\"token attr-name\"><span class=\"token namespace\">x:<\/span>Name<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>slider<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Minimum<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>0<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Maximum<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>100<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Value<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>30<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>TextBlock<\/span> <span class=\"token attr-name\">Text<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>{Binding ElementName&#061;slider, Path&#061;Value}<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n               <span class=\"token attr-name\">FontSize<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>24<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Margin<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>0,10<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>StackPanel<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>\u62d6\u52a8\u6ed1\u5757&#xff0c;\u6587\u672c\u81ea\u52a8\u66f4\u65b0\u3002<\/p>\n<p>\u8bed\u6cd5\u89e3\u6790&#xff1a;<\/p>\n<ul>\n<li>ElementName&#061;slider&#xff1a;\u7ed1\u5b9a\u6e90\u662f\u540d\u4e3a slider \u7684\u5143\u7d20<\/li>\n<li>Path&#061;Value&#xff1a;\u53d6\u5b83\u7684 Value \u5c5e\u6027<\/li>\n<\/ul>\n<p>\u5c0f\u63d0\u793a&#xff1a;\u4e0d\u540c\u63a7\u4ef6\u5c5e\u6027\u7684 UpdateSourceTrigger \u9ed8\u8ba4\u503c\u4e0d\u540c&#xff0c;\u76f4\u63a5\u5f71\u54cd\u7ed1\u5b9a\u56de\u5199\u6e90\u7684\u65f6\u673a&#xff1a;<\/p>\n<table>\n<tr>\u76ee\u6807\u5c5e\u6027\u9ed8\u8ba4 UpdateSourceTrigger\u8bf4\u660e<\/tr>\n<tbody>\n<tr>\n<td>TextBox.Text<\/td>\n<td>LostFocus<\/td>\n<td>\u5931\u53bb\u7126\u70b9\u624d\u56de\u5199\u6e90&#xff0c;\u8981\u5b9e\u65f6\u9700\u663e\u5f0f\u8bbe\u4e3a PropertyChanged<\/td>\n<\/tr>\n<tr>\n<td>Slider.Value<\/td>\n<td>PropertyChanged<\/td>\n<td>\u62d6\u52a8\u65f6\u5b9e\u65f6\u56de\u5199<\/td>\n<\/tr>\n<tr>\n<td>CheckBox.IsChecked<\/td>\n<td>PropertyChanged<\/td>\n<td>\u52fe\u9009\u65f6\u5b9e\u65f6\u56de\u5199<\/td>\n<\/tr>\n<tr>\n<td>RadioButton.IsChecked<\/td>\n<td>PropertyChanged<\/td>\n<td>\u9009\u4e2d\u65f6\u5b9e\u65f6\u56de\u5199<\/td>\n<\/tr>\n<tr>\n<td>ComboBox.SelectedItem<\/td>\n<td>PropertyChanged<\/td>\n<td>\u9009\u62e9\u65f6\u5b9e\u65f6\u56de\u5199<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u56e0\u6b64&#xff0c;\u53ea\u6709 TextBox.Text \u8fd9\u7c7b\u9ed8\u8ba4 LostFocus \u7684\u5c5e\u6027\u9700\u8981\u663e\u5f0f\u52a0 UpdateSourceTrigger&#061;PropertyChanged&#xff1b;Slider.Value \u7b49\u9ed8\u8ba4\u5c31\u662f\u5b9e\u65f6\u66f4\u65b0&#xff0c;\u65e0\u9700\u989d\u5916\u8bbe\u7f6e\u3002<\/p>\n<h4>8.2 \u7ed1\u5b9a\u5230 DataContext&#xff08;\u6700\u5e38\u7528&#xff09;<\/h4>\n<p>DataContext \u662f\u63a7\u4ef6\u7684\u9ed8\u8ba4\u6570\u636e\u6e90&#xff0c;\u4f1a\u6cbf\u53ef\u89c6\u5316\u6811\u5411\u4e0b\u4f20\u9012\u3002<\/p>\n<p>XAML&#xff1a;<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>StackPanel<\/span> <span class=\"token attr-name\">Margin<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>20<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>TextBox<\/span> <span class=\"token attr-name\">Text<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>{Binding Name}<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Width<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>200<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>TextBlock<\/span> <span class=\"token attr-name\">Text<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>{Binding Name}<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">FontSize<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>20<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>TextBlock<\/span> <span class=\"token attr-name\">Text<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>{Binding Age}<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>StackPanel<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>C# \u4ee3\u7801\u540e\u7f6e&#xff1a;<\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">partial<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">MainWindow<\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token type-list\"><span class=\"token class-name\">Window<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token function\">MainWindow<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token function\">InitializeComponent<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        DataContext <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">Person<\/span> <span class=\"token punctuation\">{<\/span> Name <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;\u5f20\u4e09&#034;<\/span><span class=\"token punctuation\">,<\/span> Age <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">25<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Person<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">string<\/span><\/span> Name <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">get<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token keyword\">set<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">int<\/span><\/span> Age <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">get<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token keyword\">set<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u6ce8\u610f .NET 8 \u5f00\u542f\u4e86 Nullable&#xff0c;string \u5c5e\u6027\u5efa\u8bae\u521d\u59cb\u5316\u4e3a\u7a7a\u5b57\u7b26\u4e32\u6216\u6807\u6ce8\u4e3a string?&#xff0c;\u5426\u5219\u4f1a\u6709 CS8618 \u8b66\u544a\u3002<\/p>\n<h4>8.3 \u53cc\u5411\u7ed1\u5b9a<\/h4>\n<p>\u9ed8\u8ba4 TextBox.Text \u662f\u53cc\u5411\u7684&#xff0c;\u4f46\u66f4\u65b0\u65f6\u673a\u662f\u5931\u53bb\u7126\u70b9\u65f6\u3002\u6539\u6210\u5b9e\u65f6\u66f4\u65b0&#xff1a;<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>TextBox<\/span> <span class=\"token attr-name\">Text<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>{Binding Name, UpdateSourceTrigger&#061;PropertyChanged}<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><\/p>\n<p>Mode \u53ef\u9009\u503c&#xff1a;<\/p>\n<table>\n<tr>Mode\u8bf4\u660e<\/tr>\n<tbody>\n<tr>\n<td>OneWay<\/td>\n<td>\u6e90 \u2192 \u76ee\u6807&#xff08;\u9ed8\u8ba4\u591a\u6570\u573a\u666f&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>TwoWay<\/td>\n<td>\u53cc\u5411&#xff08;TextBox\u3001CheckBox \u7b49\u9ed8\u8ba4&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>OneTime<\/td>\n<td>\u53ea\u7ed1\u5b9a\u4e00\u6b21<\/td>\n<\/tr>\n<tr>\n<td>OneWayToSource<\/td>\n<td>\u76ee\u6807 \u2192 \u6e90<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>8.4 INotifyPropertyChanged&#xff08;\u6570\u636e\u53d8\u5316\u901a\u77e5&#xff09;<\/h4>\n<p>\u4e0a\u9762\u7684 Person \u5982\u679c\u5728\u4ee3\u7801\u91cc\u6539\u4e86 Name&#xff0c;\u754c\u9762\u4e0d\u4f1a\u66f4\u65b0\u3002\u8981\u5b9e\u73b0\u5c5e\u6027\u53d8\u66f4\u901a\u77e5&#xff0c;\u9700\u5b9e\u73b0 INotifyPropertyChanged&#xff1a;<\/p>\n<p><span class=\"token keyword\">using<\/span> <span class=\"token namespace\">System<span class=\"token punctuation\">.<\/span>ComponentModel<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token namespace\">System<span class=\"token punctuation\">.<\/span>Runtime<span class=\"token punctuation\">.<\/span>CompilerServices<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Person<\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token type-list\"><span class=\"token class-name\">INotifyPropertyChanged<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\"><span class=\"token keyword\">string<\/span><\/span> _name <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">string<\/span><\/span> Name<br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">get<\/span> <span class=\"token operator\">&#061;&gt;<\/span> _name<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">set<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>_name <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token keyword\">value<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">return<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            _name <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">value<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token function\">OnPropertyChanged<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\"><span class=\"token keyword\">int<\/span><\/span> _age<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">int<\/span><\/span> Age<br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">get<\/span> <span class=\"token operator\">&#061;&gt;<\/span> _age<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">set<\/span> <span class=\"token punctuation\">{<\/span> _age <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">value<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token function\">OnPropertyChanged<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">event<\/span> <span class=\"token class-name\">PropertyChangedEventHandler<span class=\"token punctuation\">?<\/span><\/span> PropertyChanged<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">protected<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">void<\/span><\/span> <span class=\"token function\">OnPropertyChanged<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span><span class=\"token attribute\"><span class=\"token class-name\">CallerMemberName<\/span><\/span><span class=\"token punctuation\">]<\/span> <span class=\"token class-name\"><span class=\"token keyword\">string<\/span><span class=\"token punctuation\">?<\/span><\/span> name <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token operator\">&#061;&gt;<\/span> PropertyChanged<span class=\"token punctuation\">?.<\/span><span class=\"token function\">Invoke<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">PropertyChangedEventArgs<\/span><span class=\"token punctuation\">(<\/span>name<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u73b0\u5728\u4ee3\u7801\u91cc person.Name &#061; &#034;\u674e\u56db&#034; \u754c\u9762\u4e5f\u4f1a\u8ddf\u7740\u53d8\u3002<\/p>\n<p>\u6ce8\u610f&#xff1a;PropertyChanged \u4e8b\u4ef6\u5728 .NET 8 \u4e0b\u9700\u8981\u5199\u6210 PropertyChangedEventHandler?&#xff08;\u53ef\u7a7a&#xff09;&#xff0c;OnPropertyChanged \u7684\u53c2\u6570\u4e5f\u5efa\u8bae\u6807 string?&#xff0c;\u4ee5\u7b26\u5408 Nullable \u7ea6\u5b9a\u3002<\/p>\n<h4>8.5 \u96c6\u5408\u7ed1\u5b9a<\/h4>\n<p>\u7528 ObservableCollection&lt;T&gt; \u4ee3\u66ff List&lt;T&gt;&#xff0c;\u96c6\u5408\u589e\u5220\u4f1a\u81ea\u52a8\u5237\u65b0 UI&#xff1a;<\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\">ObservableCollection<span class=\"token punctuation\">&lt;<\/span><span class=\"token keyword\">string<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> Items <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">get<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">ObservableCollection<span class=\"token punctuation\">&lt;<\/span><span class=\"token keyword\">string<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>ListBox<\/span> <span class=\"token attr-name\">ItemsSource<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>{Binding Items}<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><\/p>\n<p>Items<span class=\"token punctuation\">.<\/span><span class=\"token function\">Add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u65b0\u9879\u76ee&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>   <span class=\"token comment\">\/\/ ListBox \u81ea\u52a8\u591a\u4e00\u884c<\/span><br \/>\nItems<span class=\"token punctuation\">.<\/span><span class=\"token function\">RemoveAt<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>     <span class=\"token comment\">\/\/ \u81ea\u52a8\u5c11\u4e00\u884c<\/span><\/p>\n<h4>8.6 \u503c\u8f6c\u6362\u5668&#xff08;Converter&#xff09;<\/h4>\n<p>\u5f53\u6e90\u7c7b\u578b\u548c\u76ee\u6807\u7c7b\u578b\u4e0d\u4e00\u81f4\u65f6&#xff08;\u5982 bool \u2192 Visibility&#xff09;&#xff0c;\u9700\u8981\u8f6c\u6362\u5668\u3002<\/p>\n<p>&#x1f4a1; \u63d0\u793a&#xff1a;WPF \u81ea\u5e26 BooleanToVisibilityConverter&#xff0c;\u65e5\u5e38 True\u2192Visible \/ False\u2192Collapsed \u7684\u573a\u666f\u76f4\u63a5\u7528\u5b83\u5373\u53ef&#xff0c;\u65e0\u9700\u81ea\u5df1\u5199\u3002\u53ea\u6709\u9700\u8981\u53cd\u5411\u903b\u8f91&#xff08;True\u2192Collapsed&#xff09;\u6216\u5176\u5b83\u590d\u6742\u89c4\u5219\u65f6\u624d\u81ea\u5b9a\u4e49\u3002\u6ce8\u610f\u5b83\u5bf9 null \u4e5f\u4f1a\u5904\u7406\u4e3a Collapsed\u3002<\/p>\n<p>\u7cfb\u7edf\u81ea\u5e26\u7528\u6cd5&#xff1a;<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Window.Resources<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>BooleanToVisibilityConverter<\/span> <span class=\"token attr-name\"><span class=\"token namespace\">x:<\/span>Key<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>BoolToVis<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Window.Resources<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>TextBlock<\/span> <span class=\"token attr-name\">Text<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u6211\u51fa\u73b0\u4e86&#xff01;<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n           <span class=\"token attr-name\">Visibility<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>{Binding IsChecked, ElementName&#061;chk,<br \/>\n                        Converter&#061;{StaticResource BoolToVis}}<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><\/p>\n<p>\u81ea\u5b9a\u4e49\u8f6c\u6362\u5668&#xff08;\u4f8b\u5982\u53cd\u5411&#xff09;&#xff0c;\u6ce8\u610f .NET 8 Nullable \u4e0b\u63a5\u53e3\u7b7e\u540d\u5e26 ?&#xff1a;<\/p>\n<p><span class=\"token keyword\">using<\/span> <span class=\"token namespace\">System<span class=\"token punctuation\">.<\/span>Globalization<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token namespace\">System<span class=\"token punctuation\">.<\/span>Windows<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token namespace\">System<span class=\"token punctuation\">.<\/span>Windows<span class=\"token punctuation\">.<\/span>Data<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">InverseBoolToVisibilityConverter<\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token type-list\"><span class=\"token class-name\">IValueConverter<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">object<\/span><span class=\"token punctuation\">?<\/span><\/span> <span class=\"token function\">Convert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">object<\/span><span class=\"token punctuation\">?<\/span><\/span> <span class=\"token keyword\">value<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Type<\/span> targetType<span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">object<\/span><span class=\"token punctuation\">?<\/span><\/span> parameter<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">CultureInfo<\/span> culture<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">value<\/span> <span class=\"token keyword\">is<\/span> <span class=\"token class-name\"><span class=\"token keyword\">bool<\/span><\/span> b <span class=\"token operator\">&amp;&amp;<\/span> b<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">?<\/span> Visibility<span class=\"token punctuation\">.<\/span>Collapsed <span class=\"token punctuation\">:<\/span> Visibility<span class=\"token punctuation\">.<\/span>Visible<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">object<\/span><span class=\"token punctuation\">?<\/span><\/span> <span class=\"token function\">ConvertBack<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">object<\/span><span class=\"token punctuation\">?<\/span><\/span> <span class=\"token keyword\">value<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Type<\/span> targetType<span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">object<\/span><span class=\"token punctuation\">?<\/span><\/span> parameter<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">CultureInfo<\/span> culture<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">value<\/span> <span class=\"token keyword\">is<\/span> <span class=\"token class-name\">Visibility<\/span> v <span class=\"token operator\">&amp;&amp;<\/span> v <span class=\"token operator\">&#061;&#061;<\/span> Visibility<span class=\"token punctuation\">.<\/span>Collapsed<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u4f7f\u7528&#xff08;\u6ce8\u610f\u5728\u6839\u5143\u7d20\u58f0\u660e xmlns:local&#061;&#034;clr-namespace:WpfDemo&#034;&#xff09;&#xff1a;<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Window<\/span> <span class=\"token attr-name\"><span class=\"token namespace\">x:<\/span>Class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>WpfDemo.MainWindow<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n        <span class=\"token attr-name\">xmlns<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>http:\/\/schemas.microsoft.com\/winfx\/2006\/xaml\/presentation<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n        <span class=\"token attr-name\"><span class=\"token namespace\">xmlns:<\/span>x<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>http:\/\/schemas.microsoft.com\/winfx\/2006\/xaml<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n        <span class=\"token attr-name\"><span class=\"token namespace\">xmlns:<\/span>local<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>clr-namespace:WpfDemo<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n        <span class=\"token attr-name\">Title<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>MainWindow<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Height<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>450<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Width<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>800<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Window.Resources<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token namespace\">local:<\/span>InverseBoolToVisibilityConverter<\/span> <span class=\"token attr-name\"><span class=\"token namespace\">x:<\/span>Key<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>InvBoolToVis<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Window.Resources<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>StackPanel<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>CheckBox<\/span> <span class=\"token attr-name\"><span class=\"token namespace\">x:<\/span>Name<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>chk<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u9690\u85cf\u4e0b\u65b9\u6587\u672c<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>TextBlock<\/span> <span class=\"token attr-name\">Text<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u6211\u88ab\u9690\u85cf\u4e86&#xff01;<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n                   <span class=\"token attr-name\">Visibility<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>{Binding ElementName&#061;chk, Path&#061;IsChecked,<br \/>\n                                Converter&#061;{StaticResource InvBoolToVis}}<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>StackPanel<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Window<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<h4>8.7 \u5e38\u7528 Binding \u53c2\u6570\u901f\u67e5<\/h4>\n<table>\n<tr>\u53c2\u6570\u8bf4\u660e<\/tr>\n<tbody>\n<tr>\n<td>Path<\/td>\n<td>\u7ed1\u5b9a\u5c5e\u6027\u8def\u5f84&#xff0c;\u652f\u6301 A.B.C<\/td>\n<\/tr>\n<tr>\n<td>ElementName<\/td>\n<td>\u7ed1\u5b9a\u5230\u6307\u5b9a\u5143\u7d20<\/td>\n<\/tr>\n<tr>\n<td>RelativeSource<\/td>\n<td>\u76f8\u5bf9\u6e90&#xff0c;\u5982 AncestorType&#061;Window<\/td>\n<\/tr>\n<tr>\n<td>Source<\/td>\n<td>\u76f4\u63a5\u6307\u5b9a\u6e90\u5bf9\u8c61<\/td>\n<\/tr>\n<tr>\n<td>Mode<\/td>\n<td>\u7ed1\u5b9a\u65b9\u5411<\/td>\n<\/tr>\n<tr>\n<td>UpdateSourceTrigger<\/td>\n<td>\u66f4\u65b0\u65f6\u673a&#xff08;Default\/PropertyChanged\/LostFocus&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>Converter<\/td>\n<td>\u503c\u8f6c\u6362\u5668<\/td>\n<\/tr>\n<tr>\n<td>StringFormat<\/td>\n<td>\u683c\u5f0f\u5316<\/td>\n<\/tr>\n<tr>\n<td>FallbackValue<\/td>\n<td>\u7ed1\u5b9a\u5931\u8d25\u65f6\u7684\u9ed8\u8ba4\u503c<\/td>\n<\/tr>\n<tr>\n<td>TargetNullValue<\/td>\n<td>\u6e90\u4e3a null \u65f6\u663e\u793a\u7684\u503c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u26a0\ufe0f StringFormat \u4e2d\u7684\u82b1\u62ec\u53f7\u5fc5\u987b\u8f6c\u4e49&#xff0c;\u5426\u5219 XAML \u4f1a\u89e3\u6790\u5931\u8d25&#xff1a;<\/p>\n<p> <span class=\"token comment\">&lt;!&#8211; \u65b9\u5f0f\u4e00&#xff1a;\u7528\u5355\u5f15\u53f7\u5305\u88f9\u6574\u4e2a\u683c\u5f0f\u4e32 &#8211;&gt;<\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>TextBlock<\/span> <span class=\"token attr-name\">Text<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>{Binding Age, StringFormat&#061;&#039;\u5e74\u9f84&#xff1a;{0}\u5c81&#039;}<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><\/p>\n<p><span class=\"token comment\">&lt;!&#8211; \u65b9\u5f0f\u4e8c&#xff1a;\u7528 {} \u524d\u7f00\u8f6c\u4e49&#xff08;\u683c\u5f0f\u4e32\u4ee5 { \u5f00\u5934\u65f6\u5fc5\u7528&#xff09; &#8211;&gt;<\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>TextBlock<\/span> <span class=\"token attr-name\">Text<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>{Binding Age, StringFormat&#061;{}{0}\u5c81}<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><\/p>\n<hr \/>\n<h3>\u4e5d\u3001\u6837\u5f0f\u3001\u89e6\u53d1\u5668\u4e0e\u6a21\u677f<\/h3>\n<h4>9.1 Style&#xff08;\u6837\u5f0f&#xff09;<\/h4>\n<p>\u628a\u91cd\u590d\u7684\u5c5e\u6027\u8bbe\u7f6e\u62bd\u51fa\u6765\u590d\u7528&#xff1a;<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Window.Resources<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Style<\/span> <span class=\"token attr-name\"><span class=\"token namespace\">x:<\/span>Key<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>PrimaryButton<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">TargetType<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Button<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token style\"><span class=\"token language-css\"><br \/>\n        &lt;Setter Property&#061;<span class=\"token string\">&#034;Background&#034;<\/span> Value&#061;<span class=\"token string\">&#034;#007ACC&#034;<\/span>\/&gt;<br \/>\n        &lt;Setter Property&#061;<span class=\"token string\">&#034;Foreground&#034;<\/span> Value&#061;<span class=\"token string\">&#034;White&#034;<\/span>\/&gt;<br \/>\n        &lt;Setter Property&#061;<span class=\"token string\">&#034;Padding&#034;<\/span> Value&#061;<span class=\"token string\">&#034;16,8&#034;<\/span>\/&gt;<br \/>\n        &lt;Setter Property&#061;<span class=\"token string\">&#034;FontSize&#034;<\/span> Value&#061;<span class=\"token string\">&#034;14&#034;<\/span>\/&gt;<br \/>\n        &lt;Setter Property&#061;<span class=\"token string\">&#034;BorderThickness&#034;<\/span> Value&#061;<span class=\"token string\">&#034;0&#034;<\/span>\/&gt;<br \/>\n        &lt;Setter Property&#061;<span class=\"token string\">&#034;Cursor&#034;<\/span> Value&#061;<span class=\"token string\">&#034;Hand&#034;<\/span>\/&gt;<br \/>\n    <\/span><\/span><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Style<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Window.Resources<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>StackPanel<\/span> <span class=\"token attr-name\">Margin<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>20<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button<\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u4e3b\u8981\u6309\u94ae<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Margin<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>0,0,0,10<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n            <span class=\"token special-attr\"><span class=\"token attr-name\">Style<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span><span class=\"token value css language-css\"><span class=\"token punctuation\">{<\/span>StaticResource PrimaryButton<span class=\"token punctuation\">}<\/span><\/span><span class=\"token punctuation\">&#034;<\/span><\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button<\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u53e6\u4e00\u4e2a<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token special-attr\"><span class=\"token attr-name\">Style<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span><span class=\"token value css language-css\"><span class=\"token punctuation\">{<\/span>StaticResource PrimaryButton<span class=\"token punctuation\">}<\/span><\/span><span class=\"token punctuation\">&#034;<\/span><\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>StackPanel<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>\u9690\u5f0f\u6837\u5f0f&#xff1a;\u4e0d\u5199 x:Key&#xff0c;\u5219\u8be5\u7c7b\u578b\u7684\u6240\u6709\u63a7\u4ef6\u81ea\u52a8\u5e94\u7528&#xff1a;<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Style<\/span> <span class=\"token attr-name\">TargetType<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Button<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token style\"><span class=\"token language-css\"><br \/>\n    &lt;Setter Property&#061;<span class=\"token string\">&#034;Margin&#034;<\/span> Value&#061;<span class=\"token string\">&#034;4&#034;<\/span>\/&gt;<br \/>\n<\/span><\/span><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Style<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>\u6837\u5f0f\u7ee7\u627f BasedOn&#xff1a;\u628a\u516c\u5171\u90e8\u5206\u62bd\u6210\u57fa\u7840\u6837\u5f0f&#xff0c;\u518d\u6d3e\u751f\u51fa\u5177\u4f53\u6837\u5f0f\u3002<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Style<\/span> <span class=\"token attr-name\"><span class=\"token namespace\">x:<\/span>Key<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>BaseButton<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">TargetType<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Button<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token style\"><span class=\"token language-css\"><br \/>\n    &lt;Setter Property&#061;<span class=\"token string\">&#034;Padding&#034;<\/span> Value&#061;<span class=\"token string\">&#034;12,6&#034;<\/span>\/&gt;<br \/>\n    &lt;Setter Property&#061;<span class=\"token string\">&#034;Cursor&#034;<\/span> Value&#061;<span class=\"token string\">&#034;Hand&#034;<\/span>\/&gt;<br \/>\n<\/span><\/span><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Style<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Style<\/span> <span class=\"token attr-name\"><span class=\"token namespace\">x:<\/span>Key<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>PrimaryButton<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">TargetType<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Button<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n       <span class=\"token attr-name\">BasedOn<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>{StaticResource BaseButton}<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token style\"><span class=\"token language-css\"><br \/>\n    &lt;Setter Property&#061;<span class=\"token string\">&#034;Background&#034;<\/span> Value&#061;<span class=\"token string\">&#034;#007ACC&#034;<\/span>\/&gt;<br \/>\n    &lt;Setter Property&#061;<span class=\"token string\">&#034;Foreground&#034;<\/span> Value&#061;<span class=\"token string\">&#034;White&#034;<\/span>\/&gt;<br \/>\n<\/span><\/span><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Style<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<h4>9.2 \u89e6\u53d1\u5668&#xff08;Trigger&#xff09;<\/h4>\n<p>\u6839\u636e\u6761\u4ef6\u81ea\u52a8\u6539\u53d8\u6837\u5f0f&#xff1a;<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Style<\/span> <span class=\"token attr-name\"><span class=\"token namespace\">x:<\/span>Key<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>HoverButton<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">TargetType<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Button<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token style\"><span class=\"token language-css\"><br \/>\n    &lt;Setter Property&#061;<span class=\"token string\">&#034;Background&#034;<\/span> Value&#061;<span class=\"token string\">&#034;#007ACC&#034;<\/span>\/&gt;<br \/>\n    &lt;Setter Property&#061;<span class=\"token string\">&#034;Foreground&#034;<\/span> Value&#061;<span class=\"token string\">&#034;White&#034;<\/span>\/&gt;<br \/>\n    &lt;Setter Property&#061;<span class=\"token string\">&#034;Template&#034;<\/span>&gt;<br \/>\n        &lt;Setter.Value&gt;<br \/>\n            &lt;ControlTemplate TargetType&#061;<span class=\"token string\">&#034;Button&#034;<\/span>&gt;<br \/>\n                &lt;Border <span class=\"token property\">x<\/span><span class=\"token punctuation\">:<\/span>Name&#061;<span class=\"token string\">&#034;border&#034;<\/span> Background&#061;<span class=\"token string\">&#034;{TemplateBinding Background}&#034;<\/span><br \/>\n                        CornerRadius&#061;<span class=\"token string\">&#034;4&#034;<\/span> Padding&#061;<span class=\"token string\">&#034;16,8&#034;<\/span>&gt;<br \/>\n                    &lt;ContentPresenter HorizontalAlignment&#061;<span class=\"token string\">&#034;Center&#034;<\/span><br \/>\n                                      VerticalAlignment&#061;<span class=\"token string\">&#034;Center&#034;<\/span>\/&gt;<br \/>\n                &lt;\/Border&gt;<br \/>\n                &lt;ControlTemplate.Triggers&gt;<br \/>\n                    &lt;Trigger Property&#061;<span class=\"token string\">&#034;IsMouseOver&#034;<\/span> Value&#061;<span class=\"token string\">&#034;True&#034;<\/span>&gt;<br \/>\n                        &lt;Setter TargetName&#061;<span class=\"token string\">&#034;border&#034;<\/span> Property&#061;<span class=\"token string\">&#034;Background&#034;<\/span> Value&#061;<span class=\"token string\">&#034;#005A9E&#034;<\/span>\/&gt;<br \/>\n                    &lt;\/Trigger&gt;<br \/>\n                    &lt;Trigger Property&#061;<span class=\"token string\">&#034;IsPressed&#034;<\/span> Value&#061;<span class=\"token string\">&#034;True&#034;<\/span>&gt;<br \/>\n                        &lt;Setter TargetName&#061;<span class=\"token string\">&#034;border&#034;<\/span> Property&#061;<span class=\"token string\">&#034;Background&#034;<\/span> Value&#061;<span class=\"token string\">&#034;#003F6E&#034;<\/span>\/&gt;<br \/>\n                    &lt;\/Trigger&gt;<br \/>\n                    &lt;Trigger Property&#061;<span class=\"token string\">&#034;IsEnabled&#034;<\/span> Value&#061;<span class=\"token string\">&#034;False&#034;<\/span>&gt;<br \/>\n                        &lt;Setter TargetName&#061;<span class=\"token string\">&#034;border&#034;<\/span> Property&#061;<span class=\"token string\">&#034;Background&#034;<\/span> Value&#061;<span class=\"token string\">&#034;#CCCCCC&#034;<\/span>\/&gt;<br \/>\n                    &lt;\/Trigger&gt;<br \/>\n                &lt;\/ControlTemplate.Triggers&gt;<br \/>\n            &lt;\/ControlTemplate&gt;<br \/>\n        &lt;\/Setter.Value&gt;<br \/>\n    &lt;\/Setter&gt;<br \/>\n<\/span><\/span><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Style<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>\u591a\u6761\u4ef6\u89e6\u53d1\u5668 MultiTrigger&#xff1a;\u53ea\u6709\u591a\u4e2a\u5c5e\u6027\u540c\u65f6\u6ee1\u8db3\u6761\u4ef6\u624d\u89e6\u53d1\u3002<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>MultiTrigger<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>MultiTrigger.Conditions<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Condition<\/span> <span class=\"token attr-name\">Property<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>IsMouseOver<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Value<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>True<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Condition<\/span> <span class=\"token attr-name\">Property<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>IsEnabled<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Value<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>True<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>MultiTrigger.Conditions<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Setter<\/span> <span class=\"token attr-name\">Property<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Background<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Value<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>#005A9E<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>MultiTrigger<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<h4>9.3 DataTrigger&#xff08;\u6570\u636e\u89e6\u53d1\u5668&#xff09;<\/h4>\n<p>\u6839\u636e\u7ed1\u5b9a\u6570\u636e\u7684\u503c\u6539\u53d8\u5916\u89c2&#xff1a;<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>TextBlock<\/span> <span class=\"token attr-name\">Text<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>{Binding Name}<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>TextBlock.Style<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Style<\/span> <span class=\"token attr-name\">TargetType<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>TextBlock<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token style\"><span class=\"token language-css\"><br \/>\n            &lt;Style.Triggers&gt;<br \/>\n                &lt;DataTrigger Binding&#061;<span class=\"token string\">&#034;{Binding IsVip}&#034;<\/span> Value&#061;<span class=\"token string\">&#034;True&#034;<\/span>&gt;<br \/>\n                    &lt;Setter Property&#061;<span class=\"token string\">&#034;Foreground&#034;<\/span> Value&#061;<span class=\"token string\">&#034;Gold&#034;<\/span>\/&gt;<br \/>\n                    &lt;Setter Property&#061;<span class=\"token string\">&#034;FontWeight&#034;<\/span> Value&#061;<span class=\"token string\">&#034;Bold&#034;<\/span>\/&gt;<br \/>\n                &lt;\/DataTrigger&gt;<br \/>\n            &lt;\/Style.Triggers&gt;<br \/>\n        <\/span><\/span><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Style<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>TextBlock.Style<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>TextBlock<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>\u5c0f\u63d0\u793a&#xff1a;\u5728 Style.Triggers \u7684 DataTrigger \u4e2d&#xff0c;Binding \u9ed8\u8ba4\u4f1a\u7ed1\u5b9a\u5230\u5e94\u7528\u4e86\u8be5 Style \u7684\u5143\u7d20\u7684\u6570\u636e\u4e0a\u4e0b\u6587&#xff08;\u901a\u5e38\u662f\u6570\u636e\u9879\u672c\u8eab&#xff09;&#xff0c;\u800c\u4e0d\u662f\u7236\u7ea7 ViewModel\u3002\u5982\u679c\u9700\u8981\u7ed1\u5b9a\u5230 ViewModel \u7684\u5c5e\u6027&#xff0c;\u9700\u8981\u4f7f\u7528 RelativeSource&#xff1a;<\/p>\n<p> <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>DataTrigger<\/span> <span class=\"token attr-name\">Binding<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>{Binding DataContext.IsVip,<br \/>\n              RelativeSource&#061;{RelativeSource AncestorType&#061;Window}}<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n             <span class=\"token attr-name\">Value<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>True<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Setter<\/span> <span class=\"token attr-name\">Property<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Foreground<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Value<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Gold<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>DataTrigger<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>\u591a\u6570\u636e\u6761\u4ef6 MultiDataTrigger&#xff1a;<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>MultiDataTrigger<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>MultiDataTrigger.Conditions<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Condition<\/span> <span class=\"token attr-name\">Binding<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>{Binding IsVip}<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Value<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>True<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Condition<\/span> <span class=\"token attr-name\">Binding<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>{Binding Age}<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Value<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>18<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>MultiDataTrigger.Conditions<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Setter<\/span> <span class=\"token attr-name\">Property<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Foreground<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Value<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Gold<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>MultiDataTrigger<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<h4>9.4 DataTemplate&#xff08;\u6570\u636e\u6a21\u677f&#xff09;<\/h4>\n<p>\u5b9a\u4e49\u201c\u6570\u636e\u5bf9\u8c61\u957f\u4ec0\u4e48\u6837\u201d&#xff1a;<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>ListBox<\/span> <span class=\"token attr-name\">ItemsSource<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>{Binding Persons}<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>ListBox.ItemTemplate<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>DataTemplate<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n            <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>StackPanel<\/span> <span class=\"token attr-name\">Orientation<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Horizontal<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Margin<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>4<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n                <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Border<\/span> <span class=\"token attr-name\">Width<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>36<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Height<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>36<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">CornerRadius<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>18<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n                        <span class=\"token attr-name\">Background<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>#007ACC<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Margin<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>0,0,10,0<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n                    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>TextBlock<\/span> <span class=\"token attr-name\">Text<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>{Binding Name[0]}<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n                               <span class=\"token attr-name\">FallbackValue<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>?<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Foreground<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>White<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n                               <span class=\"token attr-name\">HorizontalAlignment<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Center<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n                               <span class=\"token attr-name\">VerticalAlignment<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Center<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n                <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Border<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n                <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>StackPanel<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n                    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>TextBlock<\/span> <span class=\"token attr-name\">Text<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>{Binding Name}<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">FontWeight<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Bold<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n                    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>TextBlock<\/span> <span class=\"token attr-name\">Text<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>{Binding Age, StringFormat&#061;&#039;\u5e74\u9f84&#xff1a;{0}\u5c81&#039;}<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n                               <span class=\"token attr-name\">Foreground<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Gray<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">FontSize<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>12<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n                <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>StackPanel<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n            <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>StackPanel<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>DataTemplate<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>ListBox.ItemTemplate<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>ListBox<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>\u4e0a\u9762 Name[0] \u52a0\u4e86 FallbackValue&#061;&#034;?&#034;&#xff0c;\u9632\u6b62 Name \u4e3a\u7a7a\u5b57\u7b26\u4e32\u65f6\u7d22\u5f15\u5931\u8d25\u3002<\/p>\n<h4>9.5 ControlTemplate&#xff08;\u63a7\u4ef6\u6a21\u677f&#xff09;<\/h4>\n<p>\u5f7b\u5e95\u91cd\u5199\u63a7\u4ef6\u7684\u5916\u89c2\u7ed3\u6784&#xff1a;<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button<\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u5706\u89d2\u6309\u94ae<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button.Template<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>ControlTemplate<\/span> <span class=\"token attr-name\">TargetType<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Button<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n            <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Border<\/span> <span class=\"token attr-name\">Background<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>#28A745<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">CornerRadius<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>20<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Padding<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>20,10<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n                <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>ContentPresenter<\/span> <span class=\"token attr-name\">HorizontalAlignment<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Center<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n                                  <span class=\"token attr-name\">VerticalAlignment<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Center<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n            <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Border<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>ControlTemplate<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Button.Template<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Button<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>Style vs Template<\/p>\n<ul>\n<li>Style&#xff1a;\u8bbe\u7f6e\u5c5e\u6027\u503c&#xff08;\u989c\u8272\u3001\u8fb9\u8ddd\u7b49&#xff09;<\/li>\n<li>Template&#xff1a;\u91cd\u5199\u63a7\u4ef6\u7684\u5185\u90e8\u7ed3\u6784<\/li>\n<\/ul>\n<hr \/>\n<h3>\u5341\u3001\u8d44\u6e90\u5b57\u5178<\/h3>\n<h4>10.1 \u5b9a\u4e49\u4e0e\u4f7f\u7528<\/h4>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Window<\/span> <span class=\"token attr-name\"><span class=\"token namespace\">x:<\/span>Class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>WpfDemo.MainWindow<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n        <span class=\"token attr-name\">xmlns<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>http:\/\/schemas.microsoft.com\/winfx\/2006\/xaml\/presentation<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n        <span class=\"token attr-name\"><span class=\"token namespace\">xmlns:<\/span>x<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>http:\/\/schemas.microsoft.com\/winfx\/2006\/xaml<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n        <span class=\"token attr-name\"><span class=\"token namespace\">xmlns:<\/span>sys<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>clr-namespace:System;assembly&#061;System.Runtime<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Window.Resources<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>SolidColorBrush<\/span> <span class=\"token attr-name\"><span class=\"token namespace\">x:<\/span>Key<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>PrimaryBrush<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Color<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>#007ACC<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token namespace\">sys:<\/span>Double<\/span> <span class=\"token attr-name\"><span class=\"token namespace\">x:<\/span>Key<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>TitleSize<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span>24<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span><span class=\"token namespace\">sys:<\/span>Double<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Window.Resources<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>StackPanel<\/span> <span class=\"token attr-name\">Margin<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>20<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>TextBlock<\/span> <span class=\"token attr-name\">Foreground<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>{StaticResource PrimaryBrush}<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n                   <span class=\"token attr-name\">FontSize<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>{StaticResource TitleSize}<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n                   <span class=\"token attr-name\">Text<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u6807\u9898<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>StackPanel<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Window<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>\u26a0\ufe0f \u6ce8\u610f xmlns:sys \u7684\u7a0b\u5e8f\u96c6\u540d&#xff1a;.NET Framework \u65f6\u4ee3\u5199 mscorlib&#xff0c;.NET 8 \u5e94\u5199 System.Runtime\u3002xmlns:sys \u4e60\u60ef\u653e\u5728\u6839\u5143\u7d20\u4e0a\u7edf\u4e00\u58f0\u660e\u3002<\/p>\n<h4>10.2 StaticResource vs DynamicResource<\/h4>\n<table>\n<tr>StaticResourceDynamicResource<\/tr>\n<tbody>\n<tr>\n<td>\u67e5\u627e\u65f6\u673a<\/td>\n<td>\u52a0\u8f7d\u65f6\u4e00\u6b21<\/td>\n<td>\u6bcf\u6b21\u4f7f\u7528\u65f6<\/td>\n<\/tr>\n<tr>\n<td>\u6027\u80fd<\/td>\n<td>\u9ad8<\/td>\n<td>\u7565\u4f4e<\/td>\n<\/tr>\n<tr>\n<td>\u652f\u6301\u8fd0\u884c\u65f6\u66f4\u6362<\/td>\n<td>\u5426<\/td>\n<td>\u662f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u9700\u8981\u6362\u80a4\u65f6\u7528 DynamicResource\u3002<\/p>\n<h4>10.3 \u72ec\u7acb\u8d44\u6e90\u5b57\u5178\u6587\u4ef6<\/h4>\n<p>\u65b0\u5efa Styles\/Colors.xaml&#xff1a;<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>ResourceDictionary<\/span><br \/>\n    <span class=\"token attr-name\">xmlns<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>http:\/\/schemas.microsoft.com\/winfx\/2006\/xaml\/presentation<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n    <span class=\"token attr-name\"><span class=\"token namespace\">xmlns:<\/span>x<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>http:\/\/schemas.microsoft.com\/winfx\/2006\/xaml<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>SolidColorBrush<\/span> <span class=\"token attr-name\"><span class=\"token namespace\">x:<\/span>Key<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>PrimaryBrush<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Color<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>#007ACC<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>SolidColorBrush<\/span> <span class=\"token attr-name\"><span class=\"token namespace\">x:<\/span>Key<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>DangerBrush<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Color<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>#DC3545<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>ResourceDictionary<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>\u5728 App.xaml \u4e2d\u5408\u5e76&#xff1a;<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Application.Resources<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>ResourceDictionary<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>ResourceDictionary.MergedDictionaries<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n            <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>ResourceDictionary<\/span> <span class=\"token attr-name\">Source<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Styles\/Colors.xaml<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>ResourceDictionary.MergedDictionaries<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>ResourceDictionary<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Application.Resources<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>\u8de8\u7a0b\u5e8f\u96c6 \/ \u7c7b\u5e93\u5f15\u7528\u8d44\u6e90\u65f6&#xff0c;\u7528 pack URI&#xff1a;<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>ResourceDictionary<\/span> <span class=\"token attr-name\">Source<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>pack:\/\/application:,,,\/YourAssembly;component\/Styles\/Colors.xaml<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><\/p>\n<hr \/>\n<h3>\u5341\u4e00\u3001MVVM \u6a21\u5f0f<\/h3>\n<p>MVVM \u662f WPF \u6700\u63a8\u8350\u7684\u67b6\u6784&#xff1a;Model &#8211; View &#8211; ViewModel\u3002<\/p>\n<p>View (XAML)  \u2190\u7ed1\u5b9a\u2192  ViewModel  \u2190\u64cd\u4f5c\u2192  Model<br \/>\n   \u754c\u9762              \u72b6\u6001\u4e0e\u903b\u8f91           \u6570\u636e\u5b9e\u4f53<\/p>\n<ul>\n<li>View&#xff1a;\u53ea\u8d1f\u8d23\u663e\u793a&#xff0c;\u51e0\u4e4e\u4e0d\u5199\u903b\u8f91<\/li>\n<li>ViewModel&#xff1a;\u6301\u6709\u6570\u636e\u3001\u547d\u4ee4&#xff0c;\u5b9e\u73b0 INotifyPropertyChanged<\/li>\n<li>Model&#xff1a;\u7eaf\u6570\u636e\u7c7b<\/li>\n<\/ul>\n<h4>11.1 \u4e3a\u4ec0\u4e48\u7528 MVVM<\/h4>\n<ul>\n<li>UI \u4e0e\u903b\u8f91\u89e3\u8026&#xff0c;\u65b9\u4fbf\u6d4b\u8bd5<\/li>\n<li>\u4e0d\u7528\u5728\u4ee3\u7801\u540e\u7f6e\u91cc\u5199\u4e00\u5806 xxx.Text &#061; &#8230;<\/li>\n<li>\u56e2\u961f\u534f\u4f5c&#xff1a;\u8bbe\u8ba1\u5e08\u6539 XAML&#xff0c;\u7a0b\u5e8f\u5458\u5199 VM<\/li>\n<\/ul>\n<h4>11.2 ViewModel \u57fa\u7c7b&#xff08;\u51cf\u5c11\u91cd\u590d&#xff09;<\/h4>\n<p><span class=\"token keyword\">using<\/span> <span class=\"token namespace\">System<span class=\"token punctuation\">.<\/span>ComponentModel<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token namespace\">System<span class=\"token punctuation\">.<\/span>Runtime<span class=\"token punctuation\">.<\/span>CompilerServices<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">abstract<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">ViewModelBase<\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token type-list\"><span class=\"token class-name\">INotifyPropertyChanged<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">event<\/span> <span class=\"token class-name\">PropertyChangedEventHandler<span class=\"token punctuation\">?<\/span><\/span> PropertyChanged<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">protected<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">void<\/span><\/span> <span class=\"token function\">OnPropertyChanged<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span><span class=\"token attribute\"><span class=\"token class-name\">CallerMemberName<\/span><\/span><span class=\"token punctuation\">]<\/span> <span class=\"token class-name\"><span class=\"token keyword\">string<\/span><span class=\"token punctuation\">?<\/span><\/span> name <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token operator\">&#061;&gt;<\/span> PropertyChanged<span class=\"token punctuation\">?.<\/span><span class=\"token function\">Invoke<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">PropertyChangedEventArgs<\/span><span class=\"token punctuation\">(<\/span>name<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">protected<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">bool<\/span><\/span> <span class=\"token generic-method\"><span class=\"token function\">SetProperty<\/span><span class=\"token generic class-name\"><span class=\"token punctuation\">&lt;<\/span>T<span class=\"token punctuation\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">ref<\/span> <span class=\"token class-name\">T<\/span> field<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">T<\/span> <span class=\"token keyword\">value<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token punctuation\">[<\/span><span class=\"token attribute\"><span class=\"token class-name\">CallerMemberName<\/span><\/span><span class=\"token punctuation\">]<\/span> <span class=\"token class-name\"><span class=\"token keyword\">string<\/span><span class=\"token punctuation\">?<\/span><\/span> name <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token function\">Equals<\/span><span class=\"token punctuation\">(<\/span>field<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">value<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">return<\/span> <span class=\"token boolean\">false<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        field <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">value<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">OnPropertyChanged<\/span><span class=\"token punctuation\">(<\/span>name<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u4f7f\u7528&#xff1a;<\/p>\n<p><span class=\"token keyword\">private<\/span> <span class=\"token class-name\"><span class=\"token keyword\">string<\/span><\/span> _name <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">string<\/span><\/span> Name<br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">get<\/span> <span class=\"token operator\">&#061;&gt;<\/span> _name<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">set<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token function\">SetProperty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">ref<\/span> _name<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">value<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>11.3 ICommand \u4e0e RelayCommand<\/h4>\n<p>WPF \u7684 Button.Command \u53ef\u4ee5\u7ed1\u5b9a\u5230 ICommand&#xff0c;\u66ff\u4ee3 Click \u4e8b\u4ef6\u3002<\/p>\n<p>.NET 8 \u4e0b\u63a8\u8350\u7684\u624b\u52a8\u5237\u65b0\u7248\u672c&#xff1a;<\/p>\n<p><span class=\"token keyword\">using<\/span> <span class=\"token namespace\">System<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token namespace\">System<span class=\"token punctuation\">.<\/span>Windows<span class=\"token punctuation\">.<\/span>Input<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">RelayCommand<\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token type-list\"><span class=\"token class-name\">ICommand<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">Action<span class=\"token punctuation\">&lt;<\/span><span class=\"token keyword\">object<\/span><span class=\"token punctuation\">?<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> _execute<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">Predicate<span class=\"token punctuation\">&lt;<\/span><span class=\"token keyword\">object<\/span><span class=\"token punctuation\">?<\/span><span class=\"token punctuation\">&gt;<\/span><span class=\"token punctuation\">?<\/span><\/span> _canExecute<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token function\">RelayCommand<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Action<span class=\"token punctuation\">&lt;<\/span><span class=\"token keyword\">object<\/span><span class=\"token punctuation\">?<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> execute<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Predicate<span class=\"token punctuation\">&lt;<\/span><span class=\"token keyword\">object<\/span><span class=\"token punctuation\">?<\/span><span class=\"token punctuation\">&gt;<\/span><span class=\"token punctuation\">?<\/span><\/span> canExecute <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        _execute <span class=\"token operator\">&#061;<\/span> execute <span class=\"token operator\">??<\/span> <span class=\"token keyword\">throw<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">ArgumentNullException<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">nameof<\/span><span class=\"token punctuation\">(<\/span>execute<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        _canExecute <span class=\"token operator\">&#061;<\/span> canExecute<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">bool<\/span><\/span> <span class=\"token function\">CanExecute<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">object<\/span><span class=\"token punctuation\">?<\/span><\/span> parameter<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> _canExecute<span class=\"token punctuation\">?.<\/span><span class=\"token function\">Invoke<\/span><span class=\"token punctuation\">(<\/span>parameter<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">??<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">void<\/span><\/span> <span class=\"token function\">Execute<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">object<\/span><span class=\"token punctuation\">?<\/span><\/span> parameter<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token function\">_execute<\/span><span class=\"token punctuation\">(<\/span>parameter<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">event<\/span> <span class=\"token class-name\">EventHandler<span class=\"token punctuation\">?<\/span><\/span> CanExecuteChanged<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">void<\/span><\/span> <span class=\"token function\">RaiseCanExecuteChanged<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token operator\">&#061;&gt;<\/span> CanExecuteChanged<span class=\"token punctuation\">?.<\/span><span class=\"token function\">Invoke<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">,<\/span> EventArgs<span class=\"token punctuation\">.<\/span>Empty<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u4e24\u79cd\u5b9e\u73b0\u65b9\u5f0f\u7684\u5bf9\u6bd4&#xff1a;<\/p>\n<table>\n<tr>\u65b9\u6848\u5b9e\u73b0\u65b9\u5f0f\u4f18\u70b9\u7f3a\u70b9<\/tr>\n<tbody>\n<tr>\n<td>CommandManager.RequerySuggested \u7248\u672c<\/td>\n<td>\u5728 CanExecuteChanged \u7684 add\/remove \u4e2d\u6302\u94a9 CommandManager<\/td>\n<td>\u81ea\u52a8\u5237\u65b0&#xff0c;\u4ee3\u7801\u7b80\u5355<\/td>\n<td>\u6bcf\u6b21\u9f20\u6807\/\u952e\u76d8\u7b49 UI \u4ea4\u4e92\u90fd\u4f1a\u89e6\u53d1\u6240\u6709\u547d\u4ee4\u7684 CanExecute \u91cd\u67e5&#xff0c;\u6027\u80fd\u5f00\u9500\u5927&#xff1b;\u5f02\u6b65\u903b\u8f91\u6539\u4e86\u72b6\u6001\u540e\u4e0d\u4f1a\u4e3b\u52a8\u5237\u65b0<\/td>\n<\/tr>\n<tr>\n<td>\u624b\u52a8 RaiseCanExecuteChanged \u7248\u672c&#xff08;\u672c\u6587\u6240\u7528&#xff09;<\/td>\n<td>\u663e\u5f0f\u8c03\u7528 RaiseCanExecuteChanged()<\/td>\n<td>\u6027\u80fd\u53ef\u63a7&#xff0c;\u53ea\u5728\u9700\u8981\u65f6\u5237\u65b0<\/td>\n<td>\u9700\u8981\u5728\u5c5e\u6027 setter \u4e2d\u624b\u52a8\u8c03\u7528&#xff0c;\u4ee3\u7801\u7a0d\u591a<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u5982\u679c\u4f7f\u7528 CommandManager.RequerySuggested \u7248\u672c&#xff0c;\u5728\u5f02\u6b65\u64cd\u4f5c&#xff08;\u5982 await Task.Run(&#8230;)&#xff09;\u5b8c\u6210\u540e&#xff0c;\u5373\u4f7f\u72b6\u6001\u5df2\u6539\u53d8&#xff0c;\u6309\u94ae\u53ef\u80fd\u4ecd\u4fdd\u6301\u7981\u7528\u72b6\u6001&#xff0c;\u6b64\u65f6\u9700\u8981\u624b\u52a8\u8c03\u7528 CommandManager.InvalidateRequerySuggested() \u6765\u5f3a\u5236\u5237\u65b0\u3002<\/p>\n<h4>11.4 \u53ef\u9009&#xff1a;\u76f4\u63a5\u7528 CommunityToolkit.Mvvm<\/h4>\n<p>\u5982\u679c\u5acc\u624b\u5199 INotifyPropertyChanged \u548c RelayCommand \u592a\u5570\u55e6&#xff0c;\u53ef\u4ee5\u5728 .NET 8 \u9879\u76ee\u4e2d\u5b89\u88c5 NuGet \u5305 CommunityToolkit.Mvvm&#xff08;\u5fae\u8f6f\u5b98\u65b9\u63a8\u8350&#xff09;&#xff0c;\u7528\u6e90\u751f\u6210\u5668\u4e00\u884c\u641e\u5b9a&#xff1a;<\/p>\n<p><span class=\"token keyword\">using<\/span> <span class=\"token namespace\">CommunityToolkit<span class=\"token punctuation\">.<\/span>Mvvm<span class=\"token punctuation\">.<\/span>ComponentModel<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token namespace\">CommunityToolkit<span class=\"token punctuation\">.<\/span>Mvvm<span class=\"token punctuation\">.<\/span>Input<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u6ce8\u610f&#xff1a;\u4f7f\u7528\u6e90\u751f\u6210\u5668\u7279\u6027\u7684\u7c7b\u5fc5\u987b\u662f partial<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">partial<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">MainViewModel<\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token type-list\"><span class=\"token class-name\">ObservableObject<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token punctuation\">[<\/span><span class=\"token attribute\"><span class=\"token class-name\">ObservableProperty<\/span><\/span><span class=\"token punctuation\">]<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\"><span class=\"token keyword\">string<\/span><\/span> _name <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;&#034;<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token punctuation\">[<\/span><span class=\"token attribute\"><span class=\"token class-name\">RelayCommand<\/span><\/span><span class=\"token punctuation\">]<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">void<\/span><\/span> <span class=\"token function\">SayHello<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> System<span class=\"token punctuation\">.<\/span>Windows<span class=\"token punctuation\">.<\/span>MessageBox<span class=\"token punctuation\">.<\/span><span class=\"token function\">Show<\/span><span class=\"token punctuation\">(<\/span><span class=\"token interpolation-string\"><span class=\"token string\">$&#034;Hello <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span><span class=\"token expression language-csharp\">Name<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u5e26 CanExecute \u7684\u5f02\u6b65\u547d\u4ee4\u793a\u4f8b<\/span><br \/>\n    <span class=\"token punctuation\">[<\/span><span class=\"token attribute\"><span class=\"token class-name\">RelayCommand<\/span><span class=\"token attribute-arguments\"><span class=\"token punctuation\">(<\/span>CanExecute <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">nameof<\/span><span class=\"token punctuation\">(<\/span>CanSave<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><\/span><\/span><span class=\"token punctuation\">]<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token return-type class-name\">Task<\/span> <span class=\"token function\">SaveAsync<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">await<\/span> Task<span class=\"token punctuation\">.<\/span><span class=\"token function\">Delay<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1000<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u6a21\u62df\u8017\u65f6\u64cd\u4f5c<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">private<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">bool<\/span><\/span> <span class=\"token function\">CanSave<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token operator\">!<\/span><span class=\"token keyword\">string<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">IsNullOrWhiteSpace<\/span><span class=\"token punctuation\">(<\/span>Name<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u751f\u6210\u7684 Name \u5c5e\u6027\u3001SayHelloCommand\u3001SaveCommand \u90fd\u4f1a\u81ea\u52a8\u5904\u7406\u901a\u77e5\u4e0e\u5237\u65b0\u3002\u751f\u4ea7\u9879\u76ee\u91cc\u7528\u5f97\u5f88\u591a\u3002<\/p>\n<p>\u547d\u540d\u7ea6\u5b9a&#xff1a;[ObservableProperty] \u7279\u6027\u7684\u6e90\u751f\u6210\u5668\u4f1a\u57fa\u4e8e\u5b57\u6bb5\u540d\u81ea\u52a8\u751f\u6210\u9996\u5b57\u6bcd\u5927\u5199\u7684\u5c5e\u6027\u3002\u5b83\u652f\u6301 _lowerCamel \u548c m_lowerCamel \u4e24\u79cd\u547d\u540d\u7ea6\u5b9a&#xff0c;\u4f8b\u5982 _name \u4f1a\u751f\u6210 Name&#xff0c;m_name \u4e5f\u4f1a\u751f\u6210 Name\u3002\u8bf7\u52a1\u5fc5\u628a\u7c7b\u58f0\u660e\u4e3a partial&#xff0c;\u5426\u5219\u6e90\u751f\u6210\u5668\u65e0\u6cd5\u5de5\u4f5c\u3002<\/p>\n<hr \/>\n<h3>\u5341\u4e8c\u3001\u4f9d\u8d56\u5c5e\u6027\u4e0e\u9644\u52a0\u5c5e\u6027<\/h3>\n<p>\u672c\u7ae0\u5bf9\u65b0\u624b\u504f\u96be&#xff0c;\u5efa\u8bae\u5148\u638c\u63e1 MVVM&#xff0c;\u7b49\u5230\u9700\u8981\u81ea\u5df1\u5199\u81ea\u5b9a\u4e49\u63a7\u4ef6\u65f6\u518d\u56de\u5934\u770b\u3002<\/p>\n<h4>12.1 \u4ec0\u4e48\u662f\u4f9d\u8d56\u5c5e\u6027<\/h4>\n<p>WPF \u63a7\u4ef6\u7684\u5c5e\u6027\u5927\u591a\u662f\u4f9d\u8d56\u5c5e\u6027&#xff08;DependencyProperty&#xff09;\u3002\u5b83\u7684\u7279\u70b9\u662f&#xff1a;<\/p>\n<ul>\n<li>\u652f\u6301\u6570\u636e\u7ed1\u5b9a\u3001\u6837\u5f0f\u3001\u52a8\u753b\u3001\u9ed8\u8ba4\u503c\u7ee7\u627f<\/li>\n<li>\u503c\u4e0d\u76f4\u63a5\u5b58\u5728\u5bf9\u8c61\u5b57\u6bb5\u4e2d&#xff0c;\u800c\u662f\u7531 WPF \u5c5e\u6027\u7cfb\u7edf\u7ba1\u7406<\/li>\n<\/ul>\n<h4>12.2 \u81ea\u5b9a\u4e49\u4f9d\u8d56\u5c5e\u6027<\/h4>\n<p>\u4e0b\u9762\u7528 UserControl \u6d3e\u751f\u7c7b\u6f14\u793a\u4e00\u4e2a\u5e26 Title \u5c5e\u6027\u7684\u7b80\u5355\u63a7\u4ef6\u3002\u5047\u8bbe MyCard.xaml \u5185\u90e8\u6709\u4e00\u4e2a\u540d\u4e3a TitleTextBlock \u7684 TextBlock&#xff1a;<\/p>\n<p><span class=\"token keyword\">using<\/span> <span class=\"token namespace\">System<span class=\"token punctuation\">.<\/span>Windows<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token namespace\">System<span class=\"token punctuation\">.<\/span>Windows<span class=\"token punctuation\">.<\/span>Controls<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">partial<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">MyCard<\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token type-list\"><span class=\"token class-name\">UserControl<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token function\">MyCard<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token function\">InitializeComponent<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">DependencyProperty<\/span> TitleProperty <span class=\"token operator\">&#061;<\/span><br \/>\n        DependencyProperty<span class=\"token punctuation\">.<\/span><span class=\"token function\">Register<\/span><span class=\"token punctuation\">(<\/span><br \/>\n            <span class=\"token keyword\">nameof<\/span><span class=\"token punctuation\">(<\/span>Title<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token keyword\">typeof<\/span><span class=\"token punctuation\">(<\/span><span class=\"token type-expression class-name\"><span class=\"token keyword\">string<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token keyword\">typeof<\/span><span class=\"token punctuation\">(<\/span><span class=\"token type-expression class-name\">MyCard<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">PropertyMetadata<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u9ed8\u8ba4\u6807\u9898&#034;<\/span><span class=\"token punctuation\">,<\/span> OnTitleChanged<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">string<\/span><\/span> Title<br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">get<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">string<\/span><span class=\"token punctuation\">)<\/span><span class=\"token function\">GetValue<\/span><span class=\"token punctuation\">(<\/span>TitleProperty<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">set<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token function\">SetValue<\/span><span class=\"token punctuation\">(<\/span>TitleProperty<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">value<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">void<\/span><\/span> <span class=\"token function\">OnTitleChanged<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">DependencyObject<\/span> d<span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token class-name\">DependencyPropertyChangedEventArgs<\/span> e<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> card <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span>MyCard<span class=\"token punctuation\">)<\/span>d<span class=\"token punctuation\">;<\/span><br \/>\n        card<span class=\"token punctuation\">.<\/span>TitleTextBlock<span class=\"token punctuation\">.<\/span>Text <span class=\"token operator\">&#061;<\/span> e<span class=\"token punctuation\">.<\/span>NewValue <span class=\"token keyword\">as<\/span> <span class=\"token class-name\"><span class=\"token keyword\">string<\/span> <span class=\"token punctuation\">?<\/span><\/span><span class=\"token punctuation\">?<\/span> <span class=\"token string\">&#034;&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>XAML \u4e2d\u4f7f\u7528&#xff08;\u540c\u6837\u9700\u8981 xmlns:local&#061;&#034;clr-namespace:WpfDemo&#034;&#xff09;&#xff1a;<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token namespace\">local:<\/span>MyCard<\/span> <span class=\"token attr-name\">Title<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u6211\u7684\u5361\u7247<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Width<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>200<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Height<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>80<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><\/p>\n<p>\u5982\u679c\u975e\u8981 class MyCard : Control&#xff0c;\u5219\u5fc5\u987b\u540c\u65f6\u5728 Themes\/Generic.xaml \u91cc\u63d0\u4f9b\u9ed8\u8ba4 Template&#xff0c;\u5426\u5219\u63a7\u4ef6\u4e0d\u663e\u793a\u4efb\u4f55\u5185\u5bb9\u2014\u2014\u65b0\u624b\u5bb9\u6613\u8e29\u5751&#xff0c;\u6240\u4ee5\u8fd9\u91cc\u7528 UserControl \u6f14\u793a\u3002<\/p>\n<h4>12.3 \u9644\u52a0\u5c5e\u6027<\/h4>\n<p>\u9644\u52a0\u5c5e\u6027\u662f\u201c\u5b9a\u4e49\u5728 A \u7c7b&#xff0c;\u5374\u7528\u5728 B \u5bf9\u8c61\u4e0a\u201d\u7684\u5c5e\u6027&#xff0c;\u6bd4\u5982 Grid.Row\u3001Canvas.Left&#xff1a;<\/p>\n<p><span class=\"token keyword\">using<\/span> <span class=\"token namespace\">System<span class=\"token punctuation\">.<\/span>Windows<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">MyAttached<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">DependencyProperty<\/span> TagProperty <span class=\"token operator\">&#061;<\/span><br \/>\n        DependencyProperty<span class=\"token punctuation\">.<\/span><span class=\"token function\">RegisterAttached<\/span><span class=\"token punctuation\">(<\/span><br \/>\n            <span class=\"token string\">&#034;Tag&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">typeof<\/span><span class=\"token punctuation\">(<\/span><span class=\"token type-expression class-name\"><span class=\"token keyword\">string<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">typeof<\/span><span class=\"token punctuation\">(<\/span><span class=\"token type-expression class-name\">MyAttached<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">PropertyMetadata<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">string<\/span><span class=\"token punctuation\">.<\/span>Empty<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">string<\/span><span class=\"token punctuation\">?<\/span><\/span> <span class=\"token function\">GetTag<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">DependencyObject<\/span> obj<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">string<\/span><span class=\"token punctuation\">?<\/span><span class=\"token punctuation\">)<\/span>obj<span class=\"token punctuation\">.<\/span><span class=\"token function\">GetValue<\/span><span class=\"token punctuation\">(<\/span>TagProperty<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">void<\/span><\/span> <span class=\"token function\">SetTag<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">DependencyObject<\/span> obj<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\"><span class=\"token keyword\">string<\/span><span class=\"token punctuation\">?<\/span><\/span> <span class=\"token keyword\">value<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token operator\">&#061;&gt;<\/span> obj<span class=\"token punctuation\">.<\/span><span class=\"token function\">SetValue<\/span><span class=\"token punctuation\">(<\/span>TagProperty<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">value<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u65b0\u624b\u63d0\u793a&#xff1a;\u65e5\u5e38\u5f00\u53d1\u4e2d&#xff0c;\u4f9d\u8d56\u5c5e\u6027\u66f4\u591a\u662f\u201c\u4f7f\u7528\u201d\u800c\u975e\u201c\u5b9a\u4e49\u201d\u3002\u4e86\u89e3\u5373\u53ef&#xff0c;\u9700\u8981\u505a\u81ea\u5b9a\u4e49\u63a7\u4ef6\u65f6\u518d\u6df1\u5165\u3002<\/p>\n<hr \/>\n<h3>\u5341\u4e09\u3001\u7efc\u5408\u6848\u4f8b&#xff1a;\u5f85\u529e\u4e8b\u9879<\/h3>\n<p>\u628a\u524d\u9762\u7684\u77e5\u8bc6\u4e32\u8d77\u6765&#xff0c;\u505a\u4e00\u4e2a\u5b8c\u6574\u7684 TodoList\u3002<\/p>\n<h4>13.1 Model<\/h4>\n<p>Models\/TodoItem.cs&#xff1a;<\/p>\n<p><span class=\"token keyword\">using<\/span> <span class=\"token namespace\">System<span class=\"token punctuation\">.<\/span>ComponentModel<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token namespace\">System<span class=\"token punctuation\">.<\/span>Runtime<span class=\"token punctuation\">.<\/span>CompilerServices<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">namespace<\/span> <span class=\"token namespace\">WpfDemo<span class=\"token punctuation\">.<\/span>Models<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">TodoItem<\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token type-list\"><span class=\"token class-name\">INotifyPropertyChanged<\/span><\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">private<\/span> <span class=\"token class-name\"><span class=\"token keyword\">string<\/span><\/span> _title <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">string<\/span><\/span> Title<br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">get<\/span> <span class=\"token operator\">&#061;&gt;<\/span> _title<span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">set<\/span> <span class=\"token punctuation\">{<\/span> _title <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">value<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token function\">OnPropertyChanged<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>        <span class=\"token keyword\">private<\/span> <span class=\"token class-name\"><span class=\"token keyword\">bool<\/span><\/span> _isDone<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">bool<\/span><\/span> IsDone<br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">get<\/span> <span class=\"token operator\">&#061;&gt;<\/span> _isDone<span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">set<\/span> <span class=\"token punctuation\">{<\/span> _isDone <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">value<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token function\">OnPropertyChanged<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>        <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">event<\/span> <span class=\"token class-name\">PropertyChangedEventHandler<span class=\"token punctuation\">?<\/span><\/span> PropertyChanged<span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token keyword\">protected<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">void<\/span><\/span> <span class=\"token function\">OnPropertyChanged<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span><span class=\"token attribute\"><span class=\"token class-name\">CallerMemberName<\/span><\/span><span class=\"token punctuation\">]<\/span> <span class=\"token class-name\"><span class=\"token keyword\">string<\/span><span class=\"token punctuation\">?<\/span><\/span> name <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token operator\">&#061;&gt;<\/span> PropertyChanged<span class=\"token punctuation\">?.<\/span><span class=\"token function\">Invoke<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">PropertyChangedEventArgs<\/span><span class=\"token punctuation\">(<\/span>name<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>13.2 Command&#xff08;\u590d\u7528\u7b2c 11.3 \u8282\u7684 RelayCommand&#xff09;<\/h4>\n<p>Commands\/RelayCommand.cs&#xff1a;\u76f4\u63a5\u4f7f\u7528\u7b2c 11.3 \u8282\u7684\u5b9e\u73b0\u3002<\/p>\n<h4>13.3 ViewModel<\/h4>\n<p>ViewModels\/MainViewModel.cs&#xff1a;<\/p>\n<p><span class=\"token keyword\">using<\/span> <span class=\"token namespace\">System<span class=\"token punctuation\">.<\/span>Collections<span class=\"token punctuation\">.<\/span>ObjectModel<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token namespace\">System<span class=\"token punctuation\">.<\/span>Windows<span class=\"token punctuation\">.<\/span>Input<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token namespace\">WpfDemo<span class=\"token punctuation\">.<\/span>Models<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token namespace\">WpfDemo<span class=\"token punctuation\">.<\/span>Commands<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">namespace<\/span> <span class=\"token namespace\">WpfDemo<span class=\"token punctuation\">.<\/span>ViewModels<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">MainViewModel<\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token type-list\"><span class=\"token class-name\">ViewModelBase<\/span><\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\">ObservableCollection<span class=\"token punctuation\">&lt;<\/span>TodoItem<span class=\"token punctuation\">&gt;<\/span><\/span> Todos <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">get<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">ObservableCollection<span class=\"token punctuation\">&lt;<\/span>TodoItem<span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token keyword\">private<\/span> <span class=\"token class-name\"><span class=\"token keyword\">string<\/span><\/span> _newTodoText <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">string<\/span><\/span> NewTodoText<br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">get<\/span> <span class=\"token operator\">&#061;&gt;<\/span> _newTodoText<span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">set<\/span><br \/>\n            <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token function\">SetProperty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">ref<\/span> _newTodoText<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">value<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n                    <span class=\"token punctuation\">(<\/span>AddCommand <span class=\"token keyword\">as<\/span> <span class=\"token class-name\">RelayCommand<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">?.<\/span><span class=\"token function\">RaiseCanExecuteChanged<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>        <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\">ICommand<\/span> AddCommand <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">get<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\">ICommand<\/span> DeleteCommand <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">get<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\">ICommand<\/span> ClearCommand <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">get<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><\/p>\n<p>        <span class=\"token keyword\">public<\/span> <span class=\"token function\">MainViewModel<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            AddCommand <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">RelayCommand<\/span><span class=\"token punctuation\">(<\/span><br \/>\n                _ <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token function\">Add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                _ <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token operator\">!<\/span><span class=\"token keyword\">string<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">IsNullOrWhiteSpace<\/span><span class=\"token punctuation\">(<\/span>NewTodoText<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>            DeleteCommand <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">RelayCommand<\/span><span class=\"token punctuation\">(<\/span><br \/>\n                p <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token function\">Delete<\/span><span class=\"token punctuation\">(<\/span>p <span class=\"token keyword\">as<\/span> <span class=\"token class-name\">TodoItem<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>            ClearCommand <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">RelayCommand<\/span><span class=\"token punctuation\">(<\/span><br \/>\n                _ <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token function\">Clear<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                _ <span class=\"token operator\">&#061;&gt;<\/span> Todos<span class=\"token punctuation\">.<\/span>Count <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>            <span class=\"token comment\">\/\/ \u96c6\u5408\u5185\u5bb9\u53d8\u5316\u65f6&#xff0c;\u4e3b\u52a8\u5237\u65b0 ClearCommand \u7684\u53ef\u7528\u72b6\u6001\u3002<\/span><br \/>\n            <span class=\"token comment\">\/\/ \u8fd9\u662f\u4e00\u79cd\u5e38\u89c1\u6a21\u5f0f&#xff1a;\u5f53\u96c6\u5408\u5185\u5bb9\u5f71\u54cd\u547d\u4ee4\u53ef\u7528\u6027\u65f6&#xff0c;<\/span><br \/>\n            <span class=\"token comment\">\/\/ \u5728 CollectionChanged \u4e8b\u4ef6\u4e2d\u89e6\u53d1 RaiseCanExecuteChanged\u3002<\/span><br \/>\n            Todos<span class=\"token punctuation\">.<\/span>CollectionChanged <span class=\"token operator\">&#043;&#061;<\/span> <span class=\"token punctuation\">(<\/span>_<span class=\"token punctuation\">,<\/span> _<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span><br \/>\n                <span class=\"token punctuation\">(<\/span>ClearCommand <span class=\"token keyword\">as<\/span> <span class=\"token class-name\">RelayCommand<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">?.<\/span><span class=\"token function\">RaiseCanExecuteChanged<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>        <span class=\"token keyword\">private<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">void<\/span><\/span> <span class=\"token function\">Add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            Todos<span class=\"token punctuation\">.<\/span><span class=\"token function\">Add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">TodoItem<\/span> <span class=\"token punctuation\">{<\/span> Title <span class=\"token operator\">&#061;<\/span> NewTodoText<span class=\"token punctuation\">.<\/span><span class=\"token function\">Trim<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            NewTodoText <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">string<\/span><span class=\"token punctuation\">.<\/span>Empty<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>        <span class=\"token keyword\">private<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">void<\/span><\/span> <span class=\"token function\">Delete<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">TodoItem<span class=\"token punctuation\">?<\/span><\/span> item<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>item <span class=\"token operator\">!&#061;<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">)<\/span> Todos<span class=\"token punctuation\">.<\/span><span class=\"token function\">Remove<\/span><span class=\"token punctuation\">(<\/span>item<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>        <span class=\"token keyword\">private<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">void<\/span><\/span> <span class=\"token function\">Clear<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            Todos<span class=\"token punctuation\">.<\/span><span class=\"token function\">Clear<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u5173\u952e\u70b9&#xff1a;<\/p>\n<ul>\n<li>NewTodoText \u53d8\u5316\u65f6\u624b\u52a8\u5237\u65b0 AddCommand&#xff08;\u56e0\u4e3a\u6309\u94ae\u7684\u53ef\u7528\u6027\u4f9d\u8d56\u8f93\u5165&#xff09;<\/li>\n<li>Todos \u96c6\u5408\u53d8\u5316\u65f6\u5237\u65b0 ClearCommand&#xff08;\u6e05\u7a7a\u6309\u94ae\u8981\u6709\u5185\u5bb9\u624d\u53ef\u7528&#xff09;<\/li>\n<\/ul>\n<h4>13.4 View<\/h4>\n<p>MainWindow.xaml&#xff08;\u6ce8\u610f\u5168\u90e8\u4f7f\u7528 .NET 8 \u517c\u5bb9\u7684\u5b8c\u6574\u5199\u6cd5&#xff09;&#xff1a;<\/p>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Window<\/span> <span class=\"token attr-name\"><span class=\"token namespace\">x:<\/span>Class<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>WpfDemo.MainWindow<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n        <span class=\"token attr-name\">xmlns<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>http:\/\/schemas.microsoft.com\/winfx\/2006\/xaml\/presentation<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n        <span class=\"token attr-name\"><span class=\"token namespace\">xmlns:<\/span>x<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>http:\/\/schemas.microsoft.com\/winfx\/2006\/xaml<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n        <span class=\"token attr-name\">Title<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u5f85\u529e\u4e8b\u9879<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Height<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>500<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Width<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>520<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n        <span class=\"token attr-name\">WindowStartupLocation<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>CenterScreen<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Window.Resources<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Style<\/span> <span class=\"token attr-name\">TargetType<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Button<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token style\"><span class=\"token language-css\"><br \/>\n            &lt;Setter Property&#061;<span class=\"token string\">&#034;Padding&#034;<\/span> Value&#061;<span class=\"token string\">&#034;12,6&#034;<\/span>\/&gt;<br \/>\n            &lt;Setter Property&#061;<span class=\"token string\">&#034;Margin&#034;<\/span> Value&#061;<span class=\"token string\">&#034;4,0,0,0&#034;<\/span>\/&gt;<br \/>\n            &lt;Setter Property&#061;<span class=\"token string\">&#034;Cursor&#034;<\/span> Value&#061;<span class=\"token string\">&#034;Hand&#034;<\/span>\/&gt;<br \/>\n        <\/span><\/span><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Style<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Style<\/span> <span class=\"token attr-name\">TargetType<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>TextBox<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token style\"><span class=\"token language-css\"><br \/>\n            &lt;Setter Property&#061;<span class=\"token string\">&#034;Padding&#034;<\/span> Value&#061;<span class=\"token string\">&#034;6,4&#034;<\/span>\/&gt;<br \/>\n            &lt;Setter Property&#061;<span class=\"token string\">&#034;VerticalContentAlignment&#034;<\/span> Value&#061;<span class=\"token string\">&#034;Center&#034;<\/span>\/&gt;<br \/>\n        <\/span><\/span><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Style<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Window.Resources<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Grid<\/span> <span class=\"token attr-name\">Margin<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>16<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Grid.RowDefinitions<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n            <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>RowDefinition<\/span> <span class=\"token attr-name\">Height<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Auto<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n            <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>RowDefinition<\/span> <span class=\"token attr-name\">Height<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>*<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n            <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>RowDefinition<\/span> <span class=\"token attr-name\">Height<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Auto<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Grid.RowDefinitions<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>        <span class=\"token comment\">&lt;!&#8211; \u8f93\u5165\u533a &#8211;&gt;<\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Grid<\/span> <span class=\"token attr-name\">Grid.Row<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>0<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n            <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Grid.ColumnDefinitions<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n                <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>ColumnDefinition<\/span> <span class=\"token attr-name\">Width<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>*<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n                <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>ColumnDefinition<\/span> <span class=\"token attr-name\">Width<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Auto<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n            <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Grid.ColumnDefinitions<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>            <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>TextBox<\/span> <span class=\"token attr-name\">Grid.Column<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>0<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n                     <span class=\"token attr-name\">Text<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>{Binding NewTodoText, UpdateSourceTrigger&#061;PropertyChanged}<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n                     <span class=\"token attr-name\">FontSize<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>14<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><\/p>\n<p>            <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button<\/span> <span class=\"token attr-name\">Grid.Column<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>1<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u6dfb\u52a0<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n                    <span class=\"token attr-name\">Command<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>{Binding AddCommand}<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n                    <span class=\"token attr-name\">Background<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>#007ACC<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Foreground<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>White<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">BorderThickness<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>0<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Grid<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>        <span class=\"token comment\">&lt;!&#8211; \u5217\u8868\u533a &#8211;&gt;<\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>ListBox<\/span> <span class=\"token attr-name\">Grid.Row<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>1<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Margin<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>0,12<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">ItemsSource<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>{Binding Todos}<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n                 <span class=\"token attr-name\">HorizontalContentAlignment<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Stretch<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n            <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>ListBox.ItemTemplate<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n                <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>DataTemplate<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n                    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Grid<\/span> <span class=\"token attr-name\">Margin<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>2<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n                        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Grid.ColumnDefinitions<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n                            <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>ColumnDefinition<\/span> <span class=\"token attr-name\">Width<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Auto<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n                            <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>ColumnDefinition<\/span> <span class=\"token attr-name\">Width<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>*<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n                            <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>ColumnDefinition<\/span> <span class=\"token attr-name\">Width<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Auto<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n                        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Grid.ColumnDefinitions<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>                        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>CheckBox<\/span> <span class=\"token attr-name\">Grid.Column<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>0<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">IsChecked<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>{Binding IsDone}<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n                                  <span class=\"token attr-name\">VerticalAlignment<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Center<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><\/p>\n<p>                        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>TextBlock<\/span> <span class=\"token attr-name\">Grid.Column<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>1<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Text<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>{Binding Title}<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n                                   <span class=\"token attr-name\">Margin<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>8,0<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">FontSize<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>14<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n                                   <span class=\"token attr-name\">VerticalAlignment<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Center<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n                                   <span class=\"token attr-name\">TextTrimming<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>CharacterEllipsis<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n                            <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>TextBlock.Style<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n                                <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Style<\/span> <span class=\"token attr-name\">TargetType<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>TextBlock<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token style\"><span class=\"token language-css\"><br \/>\n                                    &lt;Style.Triggers&gt;<br \/>\n                                        &lt;DataTrigger Binding&#061;<span class=\"token string\">&#034;{Binding IsDone}&#034;<\/span> Value&#061;<span class=\"token string\">&#034;True&#034;<\/span>&gt;<br \/>\n                                            &lt;Setter Property&#061;<span class=\"token string\">&#034;TextDecorations&#034;<\/span> Value&#061;<span class=\"token string\">&#034;Strikethrough&#034;<\/span>\/&gt;<br \/>\n                                            &lt;Setter Property&#061;<span class=\"token string\">&#034;Foreground&#034;<\/span> Value&#061;<span class=\"token string\">&#034;Gray&#034;<\/span>\/&gt;<br \/>\n                                        &lt;\/DataTrigger&gt;<br \/>\n                                    &lt;\/Style.Triggers&gt;<br \/>\n                                <\/span><\/span><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Style<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n                            <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>TextBlock.Style<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n                        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>TextBlock<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>                        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button<\/span> <span class=\"token attr-name\">Grid.Column<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>2<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u5220\u9664<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n                                <span class=\"token attr-name\">Command<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>{Binding DataContext.DeleteCommand,<br \/>\n                                          RelativeSource&#061;{RelativeSource AncestorType&#061;{x:Type ListBox}}}<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n                                <span class=\"token attr-name\">CommandParameter<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>{Binding}<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n                    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Grid<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n                <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>DataTemplate<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n            <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>ListBox.ItemTemplate<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>ListBox<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<p>        <span class=\"token comment\">&lt;!&#8211; \u5e95\u90e8 &#8211;&gt;<\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button<\/span> <span class=\"token attr-name\">Grid.Row<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>2<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u6e05\u7a7a\u5168\u90e8<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n                <span class=\"token attr-name\">HorizontalAlignment<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Right<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n                <span class=\"token attr-name\">Command<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>{Binding ClearCommand}<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Grid<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Window<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<h4>13.5 \u4ee3\u7801\u540e\u7f6e<\/h4>\n<p>MainWindow.xaml.cs&#xff1a;<\/p>\n<p><span class=\"token keyword\">using<\/span> <span class=\"token namespace\">System<span class=\"token punctuation\">.<\/span>Windows<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token namespace\">WpfDemo<span class=\"token punctuation\">.<\/span>ViewModels<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">namespace<\/span> <span class=\"token namespace\">WpfDemo<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">partial<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">MainWindow<\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token type-list\"><span class=\"token class-name\">Window<\/span><\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">public<\/span> <span class=\"token function\">MainWindow<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token function\">InitializeComponent<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            DataContext <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">MainViewModel<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>13.6 \u5173\u952e\u70b9\u89e3\u91ca<\/h4>\n<p>\u4e3a\u4ec0\u4e48 DeleteCommand \u8981\u7528 RelativeSource&#xff1f;<\/p>\n<p>DataTemplate \u5185\u90e8\u7684 DataContext \u5df2\u7ecf\u53d8\u6210\u4e86 TodoItem&#xff08;\u5217\u8868\u7684\u6bcf\u4e00\u9879&#xff09;&#xff0c;\u800c DeleteCommand \u5b9a\u4e49\u5728 MainViewModel \u4e0a\u3002\u6240\u4ee5\u8981\u901a\u8fc7 RelativeSource&#061;{RelativeSource AncestorType&#061;{x:Type ListBox}} \u5411\u4e0a\u627e\u5230 ListBox&#xff0c;\u518d\u53d6\u5b83\u7684 DataContext&#xff08;\u4e5f\u5c31\u662f MainViewModel&#xff09;&#xff0c;\u4ece\u800c\u8bbf\u95ee DeleteCommand\u3002<\/p>\n<p>\u8fd9\u662f WPF \u4e2d\u89e3\u51b3 DataTemplate \u5185 DataContext \u9694\u79bb\u95ee\u9898\u7684\u6807\u51c6\u6a21\u5f0f&#xff0c;\u5728 ListBox\u3001ListView\u3001DataGrid \u7b49\u63a7\u4ef6\u4e2d\u4f1a\u9891\u7e41\u4f7f\u7528&#xff0c;\u5efa\u8bae\u8bfb\u8005\u719f\u6089\u3002<\/p>\n<p>\u4e3a\u4ec0\u4e48 NewTodoText \u7684 setter \u91cc\u8981\u624b\u52a8 RaiseCanExecuteChanged&#xff1f;<\/p>\n<p>\u56e0\u4e3a\u6309\u94ae\u7684 CanExecute \u4f9d\u8d56\u8f93\u5165\u5185\u5bb9\u7684\u975e\u7a7a\u6027\u3002\u9ed8\u8ba4\u7684 RelayCommand \u4e0d\u76d1\u542c\u5c5e\u6027\u53d8\u5316&#xff0c;\u53ea\u6709\u5f53\u8f93\u5165\u53d8\u5316\u65f6\u4e3b\u52a8\u5237\u65b0&#xff0c;\u6309\u94ae\u624d\u4f1a\u7531\u7070\u53d8\u4eae\u3002<\/p>\n<p>\u6309 F5 \u8fd0\u884c&#xff1a;\u8f93\u5165\u6587\u5b57 \u2192 \u6dfb\u52a0 \u2192 \u52fe\u9009\u5212\u7ebf \u2192 \u5220\u9664 \u2192 \u6e05\u7a7a\u3002<\/p>\n<hr \/>\n<h3>\u5341\u56db\u3001\u52a8\u753b\u5165\u95e8<\/h3>\n<p>\u26a0\ufe0f \u91cd\u8981\u524d\u63d0&#xff1a;WPF \u52a8\u753b\u53ea\u80fd\u4f5c\u7528\u4e8e\u4f9d\u8d56\u5c5e\u6027&#xff08;Opacity\u3001Width\u3001RenderTransform\u3001Margin \u7b49&#xff09;\u3002\u4f9d\u8d56\u5c5e\u6027\u63d0\u4f9b\u4e86\u503c\u8868\u8fbe\u5f0f\u3001\u5c5e\u6027\u5931\u6548\u3001\u9ed8\u8ba4\u503c\u3001\u7ee7\u627f\u3001\u6570\u636e\u7ed1\u5b9a\u3001\u52a8\u753b\u548c\u5c5e\u6027\u53d8\u66f4\u901a\u77e5\u7b49\u652f\u6301&#xff0c;\u666e\u901a CLR \u5c5e\u6027\u65e0\u6cd5\u88ab\u52a8\u753b\u9a71\u52a8\u3002<\/p>\n<p>WPF \u52a8\u753b\u57fa\u4e8e\u5c5e\u6027&#xff0c;\u7528 Storyboard \u63cf\u8ff0\u3002<\/p>\n<h4>14.1 \u7b80\u5355\u6de1\u5165<\/h4>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button<\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u6de1\u5165\u6309\u94ae<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Width<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>120<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Height<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>40<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Opacity<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>0<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button.Triggers<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>EventTrigger<\/span> <span class=\"token attr-name\">RoutedEvent<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Loaded<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n            <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>BeginStoryboard<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n                <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Storyboard<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n                    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>DoubleAnimation<\/span> <span class=\"token attr-name\">Storyboard.TargetProperty<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>Opacity<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n                                     <span class=\"token attr-name\">From<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>0<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">To<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>1<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Duration<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>0:0:1<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n                <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Storyboard<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n            <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>BeginStoryboard<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>EventTrigger<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Button.Triggers<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Button<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<h4>14.2 \u9f20\u6807\u60ac\u505c\u653e\u5927<\/h4>\n<p><span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button<\/span> <span class=\"token attr-name\">Content<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u60ac\u505c\u653e\u5927<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Width<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>120<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Height<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>40<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n        <span class=\"token attr-name\">RenderTransformOrigin<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>0.5,0.5<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button.RenderTransform<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>ScaleTransform<\/span> <span class=\"token attr-name\">ScaleX<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>1<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">ScaleY<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>1<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Button.RenderTransform<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Button.Triggers<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>EventTrigger<\/span> <span class=\"token attr-name\">RoutedEvent<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>MouseEnter<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n            <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>BeginStoryboard<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n                <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Storyboard<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n                    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>DoubleAnimation<\/span> <span class=\"token attr-name\">Storyboard.TargetProperty<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>RenderTransform.ScaleX<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n                                     <span class=\"token attr-name\">To<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>1.15<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Duration<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>0:0:0.2<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n                    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>DoubleAnimation<\/span> <span class=\"token attr-name\">Storyboard.TargetProperty<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>RenderTransform.ScaleY<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n                                     <span class=\"token attr-name\">To<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>1.15<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Duration<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>0:0:0.2<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n                <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Storyboard<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n            <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>BeginStoryboard<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>EventTrigger<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>EventTrigger<\/span> <span class=\"token attr-name\">RoutedEvent<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>MouseLeave<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n            <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>BeginStoryboard<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n                <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>Storyboard<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n                    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>DoubleAnimation<\/span> <span class=\"token attr-name\">Storyboard.TargetProperty<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>RenderTransform.ScaleX<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n                                     <span class=\"token attr-name\">To<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>1<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Duration<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>0:0:0.2<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n                    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>DoubleAnimation<\/span> <span class=\"token attr-name\">Storyboard.TargetProperty<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>RenderTransform.ScaleY<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n                                     <span class=\"token attr-name\">To<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>1<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Duration<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>0:0:0.2<span class=\"token punctuation\">&#034;<\/span><\/span><span class=\"token punctuation\">\/&gt;<\/span><\/span><br \/>\n                <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Storyboard<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n            <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>BeginStoryboard<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n        <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>EventTrigger<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Button.Triggers<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n<span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;\/<\/span>Button<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><\/p>\n<h4>14.3 \u5e38\u7528\u52a8\u753b\u7c7b\u578b<\/h4>\n<table>\n<tr>\u7c7b\u578b\u7528\u9014<\/tr>\n<tbody>\n<tr>\n<td>DoubleAnimation<\/td>\n<td>\u6570\u503c\u5c5e\u6027&#xff08;Opacity\u3001Width\u3001\u89d2\u5ea6&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>ColorAnimation<\/td>\n<td>\u989c\u8272<\/td>\n<\/tr>\n<tr>\n<td>ThicknessAnimation<\/td>\n<td>\u8fb9\u8ddd<\/td>\n<\/tr>\n<tr>\n<td>PointAnimation<\/td>\n<td>\u70b9\u5750\u6807<\/td>\n<\/tr>\n<tr>\n<td>DoubleAnimationUsingKeyFrames<\/td>\n<td>\u5173\u952e\u5e27\u52a8\u753b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr \/>\n<h3>\u5341\u4e94\u3001\u5b66\u4e60\u5efa\u8bae\u4e0e\u5e38\u89c1\u5751<\/h3>\n<h4>\u5b66\u4e60\u8def\u7ebf<\/h4>\n<p>XAML \u8bed\u6cd5 \u2192 \u5e03\u5c40 \u2192 \u5e38\u7528\u63a7\u4ef6 \u2192 \u4e8b\u4ef6<br \/>\n    \u2192 \u6570\u636e\u7ed1\u5b9a \u2192 \u6837\u5f0f\u6a21\u677f \u2192 \u8d44\u6e90\u5b57\u5178 \u2192 MVVM<br \/>\n    \u2192 \u4f9d\u8d56\u5c5e\u6027\/\u9644\u52a0\u5c5e\u6027 \u2192 \u52a8\u753b \u2192 \u81ea\u5b9a\u4e49\u63a7\u4ef6<\/p>\n<p>\u5efa\u8bae\u987a\u5e8f&#xff1a;<\/p>\n<li>\u5148\u80fd\u5199\u51fa\u9759\u6001\u754c\u9762&#xff08;\u5e03\u5c40 &#043; \u63a7\u4ef6&#xff09;<\/li>\n<li>\u518d\u5b66\u6570\u636e\u7ed1\u5b9a&#xff0c;\u7406\u89e3 DataContext<\/li>\n<li>\u7136\u540e\u5b66 INotifyPropertyChanged &#043; ObservableCollection<\/li>\n<li>\u518d\u5b66 MVVM &#043; ICommand&#xff0c;\u628a\u4ee3\u7801\u540e\u7f6e\u91cc\u7684\u903b\u8f91\u642c\u8fdb ViewModel<\/li>\n<li>\u6700\u540e\u5b66\u4f9d\u8d56\u5c5e\u6027\u3001\u52a8\u753b&#xff0c;\u505a\u81ea\u5df1\u7684\u63a7\u4ef6<\/li>\n<h4>\u5e38\u89c1\u5751<\/h4>\n<table>\n<tr>\u95ee\u9898\u539f\u56e0 \/ \u89e3\u51b3<\/tr>\n<tbody>\n<tr>\n<td>\u7ed1\u5b9a\u4e0d\u751f\u6548&#xff0c;\u8f93\u51fa\u7a97\u53e3\u6709 Binding \u9519\u8bef<\/td>\n<td>\u6253\u5f00 VS \u7684\u201c\u8f93\u51fa\u201d\u7a97\u53e3\u67e5\u770b&#xff0c;\u901a\u5e38 Path \u5199\u9519\u6216 DataContext \u672a\u8bbe\u7f6e<\/td>\n<\/tr>\n<tr>\n<td>\u6539\u4e86\u6570\u636e\u754c\u9762\u4e0d\u66f4\u65b0<\/td>\n<td>\u5c5e\u6027\u6ca1\u5b9e\u73b0 INotifyPropertyChanged<\/td>\n<\/tr>\n<tr>\n<td>\u96c6\u5408\u589e\u5220\u754c\u9762\u4e0d\u5237\u65b0<\/td>\n<td>\u7528\u4e86 List&lt;T&gt;&#xff0c;\u5e94\u6539\u7528 ObservableCollection&lt;T&gt;<\/td>\n<\/tr>\n<tr>\n<td>TextBox \u8f93\u5165\u65f6\u6309\u94ae\u72b6\u6001\u4e0d\u5237\u65b0<\/td>\n<td>\u52a0 UpdateSourceTrigger&#061;PropertyChanged&#xff0c;\u5e76\u5728 setter \u91cc RaiseCanExecuteChanged<\/td>\n<\/tr>\n<tr>\n<td>DataTemplate \u91cc\u7ed1\u5b9a\u547d\u4ee4\u5931\u8d25<\/td>\n<td>DataContext \u5df2\u53d8\u6210\u6570\u636e\u9879&#xff0c;\u9700\u7528 RelativeSource \u627e\u7236\u7ea7<\/td>\n<\/tr>\n<tr>\n<td>DataTrigger \u4e2d Binding \u7ed1\u5b9a\u5230\u4e86\u6570\u636e\u9879\u800c\u975e ViewModel<\/td>\n<td>Style.Triggers \u5185\u7684 DataTrigger \u9ed8\u8ba4\u7ed1\u5b9a\u5230\u5e94\u7528\u8be5 Style \u7684\u5143\u7d20\u7684\u6570\u636e\u4e0a\u4e0b\u6587&#xff1b;\u5982\u9700\u7ed1\u5b9a ViewModel \u5c5e\u6027&#xff0c;\u540c\u6837\u9700\u8981\u7528 RelativeSource<\/td>\n<\/tr>\n<tr>\n<td>\u5f02\u6b65\u66f4\u65b0\u540e\u547d\u4ee4\u672a\u5237\u65b0<\/td>\n<td>\u5982\u679c\u4f7f\u7528 CommandManager.RequerySuggested \u7248\u672c&#xff0c;\u5728 await \u5b8c\u6210\u540e\u9700\u624b\u52a8\u8c03\u7528 CommandManager.InvalidateRequerySuggested()<\/td>\n<\/tr>\n<tr>\n<td>\u63a7\u4ef6\u88ab\u201c\u5403\u6389\u201d\u770b\u4e0d\u89c1<\/td>\n<td>\u591a\u4e2a\u5143\u7d20\u653e\u540c\u4e00 Grid \u5355\u5143\u683c\u4f1a\u91cd\u53e0&#xff0c;\u9700\u8bbe\u7f6e Grid.Row\/Grid.Column<\/td>\n<\/tr>\n<tr>\n<td>\u7a97\u53e3\u7f29\u653e\u65f6\u5e03\u5c40\u4e71<\/td>\n<td>\u5c11\u7528\u56fa\u5b9a Width\/Height&#xff0c;\u591a\u7528 * \u548c Auto<\/td>\n<\/tr>\n<tr>\n<td>StaticResource \u627e\u4e0d\u5230<\/td>\n<td>\u8d44\u6e90\u5b9a\u4e49\u5728\u4f7f\u7528\u4e4b\u540e&#xff0c;\u6216\u672a\u5408\u5e76\u8d44\u6e90\u5b57\u5178&#xff1b;\u6539\u7528 DynamicResource \u53ef\u5ef6\u540e\u67e5\u627e<\/td>\n<\/tr>\n<tr>\n<td>\u56fe\u7247\u4e0d\u663e\u793a<\/td>\n<td>\u56fe\u7247\u201c\u751f\u6210\u64cd\u4f5c\u201d\u8981\u8bbe\u4e3a Resource<\/td>\n<\/tr>\n<tr>\n<td>Grid.ColumnDefinitions&#061;&#034;&#8230;&#034; \/ StackPanel.Spacing \u62a5\u9519<\/td>\n<td>\u8fd9\u4e24\u4e2a\u662f .NET 9&#043; \u624d\u52a0\u5165 WPF \u7684\u65b0\u7279\u6027&#xff0c;.NET 8 \u8bf7\u7528\u5b8c\u6574\u5199\u6cd5&#xff08;&lt;Grid.RowDefinitions&gt; \u4e0e Margin&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>StringFormat&#061;{0} \u89e3\u6790\u5931\u8d25<\/td>\n<td>\u82b1\u62ec\u53f7\u9700\u8f6c\u4e49&#xff1a;\u7528 &#039;&#8230;&#039; \u5305\u88f9\u6216\u7528 {} \u524d\u7f00<\/td>\n<\/tr>\n<tr>\n<td>xmlns:sys&#061;&#034;&#8230;mscorlib&#034; \u62a5\u9519<\/td>\n<td>.NET 8 \u5e94\u5199 assembly&#061;System.Runtime<\/td>\n<\/tr>\n<tr>\n<td>\u754c\u9762\u5361\u987f<\/td>\n<td>\u8017\u65f6\u64cd\u4f5c\u653e\u540e\u53f0\u7ebf\u7a0b&#xff08;Task.Run&#xff09;&#xff0c;UI \u66f4\u65b0\u56de\u5230 UI \u7ebf\u7a0b<\/td>\n<\/tr>\n<tr>\n<td>\u5927\u6570\u636e\u5217\u8868\u5361\u987f<\/td>\n<td>ListBox\/ListView\/DataGrid \u9ed8\u8ba4\u542f\u7528 UI \u865a\u62df\u5316&#xff1b;\u82e5\u628a\u5b83\u4eec\u653e\u8fdb\u5916\u5c42 ScrollViewer \u6216 StackPanel&#xff0c;\u865a\u62df\u5316\u4f1a\u5931\u6548&#xff0c;\u9700\u6539\u7528 Grid \u6216\u8bbe\u7f6e\u53d7\u9650\u9ad8\u5ea6<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>\u540e\u53f0\u7ebf\u7a0b\u66f4\u65b0 UI<\/h4>\n<p>\u5728 UI \u7ebf\u7a0b\u4e2d await \u9ed8\u8ba4\u4f1a\u56de\u5230 UI \u7ebf\u7a0b&#xff0c;\u53ef\u4ee5\u76f4\u63a5\u66f4\u65b0\u63a7\u4ef6&#xff1a;<\/p>\n<p><span class=\"token keyword\">private<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">void<\/span><\/span> <span class=\"token function\">Button_Click<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">object<\/span><\/span> sender<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">RoutedEventArgs<\/span> e<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> result <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> Task<span class=\"token punctuation\">.<\/span><span class=\"token function\">Run<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token function\">Compute<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    MyTextBlock<span class=\"token punctuation\">.<\/span>Text <span class=\"token operator\">&#061;<\/span> result<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u56de\u5230 UI \u7ebf\u7a0b&#xff0c;\u53ef\u76f4\u63a5\u66f4\u65b0<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u5982\u679c\u5728 Task.Run \u5185\u76f4\u63a5\u66f4\u65b0 UI&#xff08;\u975e UI \u7ebf\u7a0b&#xff09;&#xff0c;\u9700\u8981\u5207\u56de UI \u7ebf\u7a0b&#xff1a;<\/p>\n<p>Application<span class=\"token punctuation\">.<\/span>Current<span class=\"token punctuation\">.<\/span>Dispatcher<span class=\"token punctuation\">.<\/span><span class=\"token function\">Invoke<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    MyTextBlock<span class=\"token punctuation\">.<\/span>Text <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;\u66f4\u65b0&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u6216\u5f02\u6b65\u7b49\u5f85<\/span><br \/>\n<span class=\"token keyword\">await<\/span> Application<span class=\"token punctuation\">.<\/span>Current<span class=\"token punctuation\">.<\/span>Dispatcher<span class=\"token punctuation\">.<\/span><span class=\"token function\">InvokeAsync<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    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punctuation\">&#034;<\/span>WpfDemo.MainWindow<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n        <span class=\"token attr-name\">xmlns<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>http:\/\/schemas.microsoft.com\/winfx\/2006\/xaml\/presentation<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n        <span class=\"token attr-name\"><span class=\"token namespace\">xmlns:<\/span>x<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>http:\/\/schemas.microsoft.com\/winfx\/2006\/xaml<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n        <span class=\"token attr-name\"><span class=\"token namespace\">xmlns:<\/span>d<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>http:\/\/schemas.microsoft.com\/expression\/blend\/2008<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n        <span class=\"token attr-name\"><span class=\"token namespace\">xmlns:<\/span>mc<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>http:\/\/schemas.openxmlformats.org\/markup-compatibility\/2006<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n        <span class=\"token attr-name\"><span class=\"token namespace\">xmlns:<\/span>vm<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>clr-namespace:WpfDemo.ViewModels<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n        <span class=\"token attr-name\"><span class=\"token namespace\">mc:<\/span>Ignorable<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>d<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n        <span class=\"token attr-name\"><span class=\"token namespace\">d:<\/span>DataContext<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>{d:DesignInstance Type&#061;vm:MainViewModel, IsDesignTimeCreatable&#061;True}<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n        <span class=\"token attr-name\">Title<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>\u5f85\u529e\u4e8b\u9879<span class=\"token punctuation\">&#034;<\/span><\/span> <span class=\"token attr-name\">Height<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token 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punctuation\">&lt;<\/span>Window.Resources<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><br \/>\n    <span class=\"token tag\"><span class=\"token tag\"><span class=\"token punctuation\">&lt;<\/span>CollectionViewSource<\/span> <span class=\"token attr-name\"><span class=\"token namespace\">x:<\/span>Key<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>FilteredTodos<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n                          <span class=\"token attr-name\">Source<\/span><span class=\"token attr-value\"><span class=\"token punctuation attr-equals\">&#061;<\/span><span class=\"token punctuation\">&#034;<\/span>{Binding Todos}<span class=\"token punctuation\">&#034;<\/span><\/span><br \/>\n                          <span class=\"token attr-name\">Filter<\/span><span class=\"token attr-value\"><span class=\"token punctuation 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