- \n
- \n
\u6838\u5fc3\u5143\u7d20：\u7531TreeNode（\u8282\u70b9）\u7ec4\u6210，\u6bcf\u4e2a\u8282\u70b9\u53ef\u5305\u542b\u5b50\u8282\u70b9（Nodes\u5c5e\u6027），\u5f62\u6210 \u201c\u6839\u8282\u70b9\u2192\u5b50\u8282\u70b9\u2192\u5b59\u8282\u70b9\u201d \u7684\u5c42\u7ea7\u5173\u7cfb\u3002<\/p>\n<\/li>\n
- \n
\u4ea4\u4e92\u80fd\u529b：\u652f\u6301\u70b9\u51fb\u5c55\u5f00 \/ \u6298\u53e0（\u53cc\u51fb\u6216\u70b9\u51fb \u201c+\/-\u201d \u56fe\u6807）\u3001\u8282\u70b9\u9009\u62e9\u3001\u6587\u672c\u7f16\u8f91\u3001\u62d6\u62fd\u8282\u70b9\u7b49\u3002<\/p>\n<\/li>\n
- \n
\u89c6\u89c9\u5b9a\u5236：\u53ef\u8bbe\u7f6e\u8282\u70b9\u56fe\u6807\u3001\u8fde\u7ebf\u6837\u5f0f\u3001\u9009\u4e2d\u72b6\u6001\u6837\u5f0f\u7b49，\u63d0\u5347\u5c42\u7ea7\u8fa8\u8bc6\u5ea6\u3002<\/p>\n<\/li>\n<\/ul>\n
\u4e8c\u3001\u6838\u5fc3\u5c5e\u6027\u4e0e\u4e8b\u4ef6（\u8868\u683c\u6574\u7406）<\/h4>\n
\n
\u7c7b\u522b\u540d\u79f0\u8bf4\u660e<\/tr>\n \n\n \u8282\u70b9\u7ba1\u7406<\/td>\n Nodes<\/td>\n \u63a7\u4ef6\u7684\u6839\u8282\u70b9\u96c6\u5408（TreeNodeCollection），\u901a\u8fc7Add()\u6dfb\u52a0\u6839\u8282\u70b9<\/td>\n<\/tr>\n \n <\/td>\n SelectedNode<\/td>\n \u83b7\u53d6\u6216\u8bbe\u7f6e\u5f53\u524d\u9009\u4e2d\u7684\u8282\u70b9（TreeNode），null\u8868\u793a\u65e0\u9009\u4e2d\u8282\u70b9<\/td>\n<\/tr>\n \n <\/td>\n TopNode<\/td>\n \u83b7\u53d6\u6216\u8bbe\u7f6e\u53ef\u89c1\u533a\u57df\u7684\u9876\u90e8\u8282\u70b9（\u7528\u4e8e\u6eda\u52a8\u5b9a\u4f4d）<\/td>\n<\/tr>\n \n \u5916\u89c2\u6837\u5f0f<\/td>\n ShowPlusMinus<\/td>\n \u662f\u5426\u5728\u53ef\u5c55\u5f00 \/ \u6298\u53e0\u8282\u70b9\u524d\u663e\u793a \u201c+\u201d\u201c-\u201d \u56fe\u6807（\u9ed8\u8ba4true）<\/td>\n<\/tr>\n \n <\/td>\n ShowRootLines<\/td>\n \u662f\u5426\u663e\u793a\u6839\u8282\u70b9\u4e4b\u95f4\u7684\u8fde\u7ebf（\u9ed8\u8ba4true）<\/td>\n<\/tr>\n \n <\/td>\n ShowLines<\/td>\n \u662f\u5426\u663e\u793a\u6240\u6709\u8282\u70b9\u4e4b\u95f4\u7684\u8fde\u7ebf（\u9ed8\u8ba4true）<\/td>\n<\/tr>\n \n <\/td>\n ImageList<\/td>\n \u5173\u8054\u7684ImageList\u63a7\u4ef6（\u7528\u4e8e\u8bbe\u7f6e\u8282\u70b9\u7684\u56fe\u6807）<\/td>\n<\/tr>\n \n <\/td>\n CheckBoxes<\/td>\n \u662f\u5426\u5728\u8282\u70b9\u524d\u663e\u793a\u590d\u9009\u6846（\u9ed8\u8ba4false，\u7528\u4e8e\u591a\u9009\u573a\u666f）<\/td>\n<\/tr>\n \n \u4ea4\u4e92\u63a7\u5236<\/td>\n AllowEdit<\/td>\n \u662f\u5426\u5141\u8bb8\u7528\u6237\u7f16\u8f91\u8282\u70b9\u6587\u672c（\u9ed8\u8ba4false，\u53cc\u51fb\u8282\u70b9\u6587\u672c\u8fdb\u5165\u7f16\u8f91\u6a21\u5f0f）<\/td>\n<\/tr>\n \n <\/td>\n AllowDragDrop<\/td>\n \u662f\u5426\u5141\u8bb8\u62d6\u62fd\u8282\u70b9（\u9ed8\u8ba4false，\u9700\u914d\u5408\u62d6\u62fd\u4e8b\u4ef6\u5b9e\u73b0\u529f\u80fd）<\/td>\n<\/tr>\n \n <\/td>\n Sorted<\/td>\n \u8282\u70b9\u662f\u5426\u81ea\u52a8\u6392\u5e8f（\u9ed8\u8ba4false，true\u65f6\u6309\u6587\u672c\u5347\u5e8f\u6392\u5217\u540c\u7ea7\u8282\u70b9）<\/td>\n<\/tr>\n \n \u6838\u5fc3\u4e8b\u4ef6<\/td>\n AfterSelect<\/td>\n \u8282\u70b9\u9009\u4e2d\u72b6\u6001\u53d8\u5316\u540e\u89e6\u53d1（\u83b7\u53d6\u65b0\u9009\u4e2d\u7684\u8282\u70b9）<\/td>\n<\/tr>\n \n <\/td>\n NodeMouseClick<\/td>\n \u9f20\u6807\u70b9\u51fb\u8282\u70b9\u65f6\u89e6\u53d1（\u53ef\u533a\u5206\u5de6\u952e \/ \u53f3\u952e\u70b9\u51fb）<\/td>\n<\/tr>\n \n <\/td>\n BeforeExpand<\/td>\n \u8282\u70b9\u5c55\u5f00\u524d\u89e6\u53d1（\u53ef\u53d6\u6d88\u5c55\u5f00，\u5982\u6743\u9650\u6821\u9a8c）<\/td>\n<\/tr>\n \n <\/td>\n AfterCollapse<\/td>\n \u8282\u70b9\u6298\u53e0\u540e\u89e6\u53d1（\u7528\u4e8e\u66f4\u65b0\u754c\u9762\u72b6\u6001）<\/td>\n<\/tr>\n \n <\/td>\n NodeMouseDoubleClick<\/td>\n \u53cc\u51fb\u8282\u70b9\u65f6\u89e6\u53d1（\u5982\u7528\u4e8e\u7f16\u8f91\u8282\u70b9\u6216\u6253\u5f00\u8be6\u60c5）<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u4e09\u3001\u57fa\u7840\u7528\u6cd5：\u521b\u5efa\u5c42\u7ea7\u8282\u70b9\u5e76\u4ea4\u4e92<\/h4>\n
\u573a\u666f：\u5c55\u793a\u516c\u53f8\u90e8\u95e8\u4e0e\u5458\u5de5\u7684\u5c42\u7ea7\u7ed3\u6784（\u6839\u8282\u70b9\u4e3a\u516c\u53f8，\u5b50\u8282\u70b9\u4e3a\u90e8\u95e8，\u5b59\u8282\u70b9\u4e3a\u5458\u5de5）<\/h5>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250810094432-68986a00d81fa.png\")
<\/p>\n\u70b9\u51fb\u5bf9\u5e94\u4f4d\u7f6e\u7f16\u8f91\u8282\u70b9<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250810094435-68986a0341db7.png\")
<\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250810094435-68986a035bf55.png\")
<\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250810094436-68986a0423804.png\")
<\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250810094436-68986a045959d.png\")
<\/p>\n\u6dfb\u52a0\u5bf9\u5e94\u6839\u8282\u70b9\u548c\u5b57\u8282\u70b9，\u4e5f\u53ef\u4ee5\u6dfb\u52a0\u56fe\u7247<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250810094436-68986a0481626.png\")
<\/p>\n<\/p>\n1. \u754c\u9762\u8bbe\u8ba1<\/h5>\n
\u5728\u7a97\u4f53\u4e2d\u6dfb\u52a0：<\/p>\n
- \n
- \n
TreeView\u63a7\u4ef6（\u547d\u540d\u4e3atreeView1）；<\/p>\n<\/li>\n
- \n
Button\u63a7\u4ef6（\u547d\u540d\u4e3abtnAdd，\u6587\u672c \u201c\u6dfb\u52a0\u8282\u70b9\u201d）；<\/p>\n<\/li>\n
- \n
Label\u63a7\u4ef6（\u547d\u540d\u4e3alblInfo，\u7528\u4e8e\u663e\u793a\u9009\u4e2d\u8282\u70b9\u4fe1\u606f）\u3002<\/p>\n<\/li>\n<\/ul>\n
2. \u4ee3\u7801\u5b9e\u73b0（\u52a8\u6001\u6dfb\u52a0\u8282\u70b9\u4e0e\u4e8b\u4ef6\u5904\u7406）<\/h5>\n
using System;
\nusing System.Windows.Forms;
\n\u200b
\nnamespace TreeViewDemo
\n{
\n \u00a0 \u00a0public partial class Form1 : Form
\n \u00a0 {
\n \u00a0 \u00a0 \u00a0 \u00a0public Form1()
\n \u00a0 \u00a0 \u00a0 {
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0InitializeComponent();
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\/\/ \u521d\u59cb\u5316TreeView
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0InitTreeView();
\n \u00a0 \u00a0 \u00a0 }
\n\u200b
\n \u00a0 \u00a0 \u00a0 \u00a0private void InitTreeView()
\n \u00a0 \u00a0 \u00a0 {
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\/\/ 1. \u6dfb\u52a0\u6839\u8282\u70b9（\u516c\u53f8）
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0TreeNode rootNode = new TreeNode("\u79d1\u6280\u6709\u9650\u516c\u53f8");
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0treeView1.Nodes.Add(rootNode);
\n\u200b
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\/\/ 2. \u4e3a\u6839\u8282\u70b9\u6dfb\u52a0\u5b50\u8282\u70b9（\u90e8\u95e8）
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0TreeNode dept1 = new TreeNode("\u7814\u53d1\u90e8");
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0TreeNode dept2 = new TreeNode("\u5e02\u573a\u90e8");
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0rootNode.Nodes.Add(dept1);
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0rootNode.Nodes.Add(dept2);
\n\u200b
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\/\/ 3. \u4e3a\u90e8\u95e8\u8282\u70b9\u6dfb\u52a0\u5b59\u8282\u70b9（\u5458\u5de5）
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0dept1.Nodes.Add(new TreeNode("\u5f20\u4e09（\u7ecf\u7406）"));
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0dept1.Nodes.Add(new TreeNode("\u674e\u56db（\u5f00\u53d1）"));
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0dept2.Nodes.Add(new TreeNode("\u738b\u4e94（\u4e13\u5458）"));
\n\u200b
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\/\/ 4. \u521d\u59cb\u5c55\u5f00\u6240\u6709\u8282\u70b9
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0treeView1.ExpandAll();
\n\u200b
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\/\/ 5. \u5141\u8bb8\u7f16\u8f91\u8282\u70b9\u6587\u672c
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0treeView1.AllowEdit = true;
\n \u00a0 \u00a0 \u00a0 }
\n\u200b
\n \u00a0 \u00a0 \u00a0 \u00a0\/\/ \u8282\u70b9\u9009\u4e2d\u540e\u89e6\u53d1：\u663e\u793a\u8282\u70b9\u4fe1\u606f
\n \u00a0 \u00a0 \u00a0 \u00a0private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
\n \u00a0 \u00a0 \u00a0 {
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0if (e.Node != null)
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 {
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\/\/ \u83b7\u53d6\u8282\u70b9\u5c42\u7ea7（\u6839\u8282\u70b9Level=0，\u5b50\u8282\u70b9Level=1，\u4ee5\u6b64\u7c7b\u63a8）
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0int level = e.Node.Level;
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0string levelDesc = level == 0 ? "（\u516c\u53f8）" : (level == 1 ? "（\u90e8\u95e8）" : "（\u5458\u5de5）");
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0lblInfo.Text = $"\u9009\u4e2d：{e.Node.Text} {levelDesc}\\\\n\u8def\u5f84：{GetNodePath(e.Node)}";
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }
\n \u00a0 \u00a0 \u00a0 }
\n\u200b
\n \u00a0 \u00a0 \u00a0 \u00a0\/\/ \u8f85\u52a9\u65b9\u6cd5：\u83b7\u53d6\u8282\u70b9\u7684\u5b8c\u6574\u8def\u5f84（\u5982\u201c\u79d1\u6280\u6709\u9650\u516c\u53f8\u2192\u7814\u53d1\u90e8\u2192\u5f20\u4e09\u201d）
\n \u00a0 \u00a0 \u00a0 \u00a0private string GetNodePath(TreeNode node)
\n \u00a0 \u00a0 \u00a0 {
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0string path = node.Text;
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0TreeNode parent = node.Parent;
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0while (parent != null)
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 {
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0path = parent.Text + "\u2192" + path;
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0parent = parent.Parent;
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0return path;
\n \u00a0 \u00a0 \u00a0 }
\n\u200b
\n \u00a0 \u00a0 \u00a0 \u00a0\/\/ \u6dfb\u52a0\u8282\u70b9\u6309\u94ae：\u5728\u9009\u4e2d\u8282\u70b9\u4e0b\u6dfb\u52a0\u5b50\u8282\u70b9
\n \u00a0 \u00a0 \u00a0 \u00a0private void btnAdd_Click(object sender, EventArgs e)
\n \u00a0 \u00a0 \u00a0 {
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0if (treeView1.SelectedNode == null)
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 {
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0MessageBox.Show("\u8bf7\u5148\u9009\u62e9\u4e00\u4e2a\u8282\u70b9");
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0return;
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }
\n\u200b
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\/\/ \u6dfb\u52a0\u65b0\u5b50\u8282\u70b9
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0string newNodeText = "\u65b0\u8282\u70b9";
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\/\/ \u82e5\u9009\u4e2d\u7684\u662f\u5458\u5de5\u8282\u70b9（Level=2），\u65b0\u8282\u70b9\u9ed8\u8ba4\u540d\u4e3a\u201c\u65b0\u5458\u5de5\u201d
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0if (treeView1.SelectedNode.Level == 2)
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 {
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0newNodeText = "\u65b0\u5458\u5de5";
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\/\/ \u82e5\u9009\u4e2d\u7684\u662f\u90e8\u95e8\u8282\u70b9（Level=1），\u65b0\u8282\u70b9\u9ed8\u8ba4\u540d\u4e3a\u201c\u65b0\u5458\u5de5\u201d
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0else if (treeView1.SelectedNode.Level == 1)
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 {
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0newNodeText = "\u65b0\u5458\u5de5";
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\/\/ \u82e5\u9009\u4e2d\u7684\u662f\u6839\u8282\u70b9（Level=0），\u65b0\u8282\u70b9\u9ed8\u8ba4\u540d\u4e3a\u201c\u65b0\u90e8\u95e8\u201d
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0else if (treeView1.SelectedNode.Level == 0)
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 {
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0newNodeText = "\u65b0\u90e8\u95e8";
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }
\n\u200b
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0TreeNode newNode = new TreeNode(newNodeText);
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0treeView1.SelectedNode.Nodes.Add(newNode);
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\/\/ \u5c55\u5f00\u7236\u8282\u70b9，\u663e\u793a\u65b0\u8282\u70b9
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0treeView1.SelectedNode.Expand();
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\/\/ \u9009\u4e2d\u65b0\u8282\u70b9
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0treeView1.SelectedNode = newNode;
\n \u00a0 \u00a0 \u00a0 }
\n \u00a0 }
\n}<\/p>\n\u56db\u3001\u8fdb\u9636\u7528\u6cd5\u4e0e\u573a\u666f<\/h4>\n
1. \u4e3a\u8282\u70b9\u8bbe\u7f6e\u56fe\u6807（\u7ed3\u5408 ImageList）<\/h5>\n
\u901a\u8fc7ImageList\u4e3a\u4e0d\u540c\u7c7b\u578b\u7684\u8282\u70b9\u8bbe\u7f6e\u56fe\u6807（\u5982\u6839\u8282\u70b9\u7528\u516c\u53f8\u56fe\u6807，\u90e8\u95e8\u7528\u6587\u4ef6\u5939\u56fe\u6807）：<\/p>\n
\/\/ 1. \u5148\u5728\u7a97\u4f53\u6dfb\u52a0ImageList\u63a7\u4ef6（\u547d\u540d\u4e3aimageList1），\u5e76\u6dfb\u52a0\u56fe\u6807（\u5982\u7d22\u5f150：\u516c\u53f8\u56fe\u6807，1：\u90e8\u95e8\u56fe\u6807，2：\u5458\u5de5\u56fe\u6807）
\n\/\/ 2. \u5173\u8054TreeView\u4e0eImageList
\ntreeView1.ImageList = imageList1;
\n\u200b
\n\/\/ 3. \u4e3a\u8282\u70b9\u8bbe\u7f6e\u56fe\u6807（ImageIndex：\u9ed8\u8ba4\u56fe\u6807，SelectedImageIndex：\u9009\u4e2d\u65f6\u7684\u56fe\u6807）
\nTreeNode rootNode = new TreeNode("\u79d1\u6280\u6709\u9650\u516c\u53f8");
\nrootNode.ImageIndex = 0; \u00a0 \u00a0 \u00a0 \/\/ \u9ed8\u8ba4\u663e\u793a\u516c\u53f8\u56fe\u6807
\nrootNode.SelectedImageIndex = 0; \/\/ \u9009\u4e2d\u65f6\u4ecd\u663e\u793a\u516c\u53f8\u56fe\u6807
\n\u200b
\nTreeNode deptNode = new TreeNode("\u7814\u53d1\u90e8");
\ndeptNode.ImageIndex = 1; \u00a0 \u00a0 \u00a0 \/\/ \u90e8\u95e8\u56fe\u6807
\ndeptNode.SelectedImageIndex = 1;
\n\u200b
\nTreeNode empNode = new TreeNode("\u5f20\u4e09");
\nempNode.ImageIndex = 2; \u00a0 \u00a0 \u00a0 \u00a0\/\/ \u5458\u5de5\u56fe\u6807
\nempNode.SelectedImageIndex = 2;<\/p>\n2. \u8282\u70b9\u590d\u9009\u6846（\u591a\u9009\u573a\u666f）<\/h5>\n
\u8bbe\u7f6eCheckBoxes = true\u663e\u793a\u590d\u9009\u6846，\u7528\u4e8e\u6279\u91cf\u9009\u62e9\u8282\u70b9（\u5982\u6279\u91cf\u5220\u9664\u3001\u6743\u9650\u5206\u914d）：<\/p>\n
\/\/ \u542f\u7528\u590d\u9009\u6846
\ntreeView1.CheckBoxes = true;
\n\u200b
\n\/\/ \u6309\u94ae：\u83b7\u53d6\u6240\u6709\u52fe\u9009\u7684\u8282\u70b9
\nprivate void btnGetCheckedNodes_Click(object sender, EventArgs e)
\n{
\n \u00a0 \u00a0string checkedNodes = "";
\n \u00a0 \u00a0\/\/ \u9012\u5f52\u904d\u5386\u6240\u6709\u8282\u70b9，\u6536\u96c6\u52fe\u9009\u7684\u8282\u70b9
\n \u00a0 \u00a0CollectCheckedNodes(treeView1.Nodes, ref checkedNodes);
\n \u00a0 \u00a0MessageBox.Show($"\u52fe\u9009\u7684\u8282\u70b9：\\\\n{checkedNodes}");
\n}
\n\u200b
\n\/\/ \u9012\u5f52\u6536\u96c6\u52fe\u9009\u7684\u8282\u70b9
\nprivate void CollectCheckedNodes(TreeNodeCollection nodes, ref string result)
\n{
\n \u00a0 \u00a0foreach (TreeNode node in nodes)
\n \u00a0 {
\n \u00a0 \u00a0 \u00a0 \u00a0if (node.Checked)
\n \u00a0 \u00a0 \u00a0 {
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0result += node.Text + "\\\\n";
\n \u00a0 \u00a0 \u00a0 }
\n \u00a0 \u00a0 \u00a0 \u00a0\/\/ \u9012\u5f52\u5904\u7406\u5b50\u8282\u70b9
\n \u00a0 \u00a0 \u00a0 \u00a0if (node.Nodes.Count > 0)
\n \u00a0 \u00a0 \u00a0 {
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0CollectCheckedNodes(node.Nodes, ref result);
\n \u00a0 \u00a0 \u00a0 }
\n \u00a0 }
\n}<\/p>\n3. \u8282\u70b9\u53f3\u952e\u83dc\u5355（\u53f3\u952e\u64cd\u4f5c\u8282\u70b9）<\/h5>\n
\u4e3a\u8282\u70b9\u6dfb\u52a0\u53f3\u952e\u83dc\u5355（\u5982 \u201c\u91cd\u547d\u540d\u201d\u201c\u5220\u9664\u201d\u201c\u6dfb\u52a0\u5b50\u8282\u70b9\u201d）：<\/p>\n
\/\/ 1. \u6dfb\u52a0ContextMenuStrip\u63a7\u4ef6（\u547d\u540d\u4e3acontextMenuStrip1），\u5e76\u6dfb\u52a0\u83dc\u5355\u9879（\u91cd\u547d\u540d\u3001\u5220\u9664）
\n\/\/ 2. \u7ed1\u5b9aTreeView\u7684\u53f3\u952e\u83dc\u5355
\ntreeView1.ContextMenuStrip = contextMenuStrip1;
\n\u200b
\n\/\/ 3. \u53f3\u952e\u83dc\u5355\u9879\u70b9\u51fb\u4e8b\u4ef6：\u91cd\u547d\u540d\u8282\u70b9
\nprivate void renameToolStripMenuItem_Click(object sender, EventArgs e)
\n{
\n \u00a0 \u00a0if (treeView1.SelectedNode != null)
\n \u00a0 {
\n \u00a0 \u00a0 \u00a0 \u00a0treeView1.LabelEdit = true; \/\/ \u5141\u8bb8\u7f16\u8f91
\n \u00a0 \u00a0 \u00a0 \u00a0treeView1.SelectedNode.BeginEdit(); \/\/ \u8fdb\u5165\u7f16\u8f91\u6a21\u5f0f
\n \u00a0 }
\n}
\n\u200b
\n\/\/ 4. \u53f3\u952e\u83dc\u5355\u9879\u70b9\u51fb\u4e8b\u4ef6：\u5220\u9664\u8282\u70b9
\nprivate void deleteToolStripMenuItem_Click(object sender, EventArgs e)
\n{
\n \u00a0 \u00a0if (treeView1.SelectedNode != null)
\n \u00a0 {
\n \u00a0 \u00a0 \u00a0 \u00a0if (MessageBox.Show($"\u786e\u5b9a\u5220\u9664\u201c{treeView1.SelectedNode.Text}\u201d\u5417？", "\u63d0\u793a", MessageBoxButtons.YesNo) == DialogResult.Yes)
\n \u00a0 \u00a0 \u00a0 {
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0treeView1.SelectedNode.Remove(); \/\/ \u5220\u9664\u8282\u70b9
\n \u00a0 \u00a0 \u00a0 }
\n \u00a0 }
\n}<\/p>\n4. \u5ef6\u8fdf\u52a0\u8f7d\u5b50\u8282\u70b9（\u4f18\u5316\u5927\u6570\u636e\u91cf\u6027\u80fd）<\/h5>\n
\u5f53\u8282\u70b9\u5c42\u7ea7\u6df1\u3001\u6570\u91cf\u591a\u65f6，\u4e00\u6b21\u6027\u52a0\u8f7d\u6240\u6709\u8282\u70b9\u4f1a\u5bfc\u81f4\u5361\u987f\u3002\u53ef\u91c7\u7528 \u201c\u5ef6\u8fdf\u52a0\u8f7d\u201d：\u521d\u59cb\u53ea\u52a0\u8f7d\u6839\u8282\u70b9\u548c\u4e00\u7ea7\u8282\u70b9，\u5c55\u5f00\u8282\u70b9\u65f6\u518d\u52a0\u8f7d\u5176\u5b50\u8282\u70b9\u3002<\/p>\n
\/\/ \u521d\u59cb\u5316：\u53ea\u52a0\u8f7d\u6839\u8282\u70b9\u548c\u4e00\u7ea7\u8282\u70b9（\u6807\u8bb0\u4e3a\u201c\u5f85\u52a0\u8f7d\u201d）
\nprivate void InitLazyLoad()
\n{
\n \u00a0 \u00a0TreeNode root = new TreeNode("\u6587\u4ef6\u7cfb\u7edf");
\n \u00a0 \u00a0treeView1.Nodes.Add(root);
\n\u200b
\n \u00a0 \u00a0\/\/ \u6dfb\u52a0\u4e00\u7ea7\u8282\u70b9（\u6587\u4ef6\u5939），\u5e76\u6807\u8bb0Tag\u4e3a"unloaded"\u8868\u793a\u672a\u52a0\u8f7d\u5b50\u8282\u70b9
\n \u00a0 \u00a0TreeNode folder1 = new TreeNode("\u6587\u6863");
\n \u00a0 \u00a0folder1.Tag = "unloaded"; \/\/ \u81ea\u5b9a\u4e49\u6807\u8bb0
\n \u00a0 \u00a0root.Nodes.Add(folder1);
\n}
\n\u200b
\n\/\/ \u8282\u70b9\u5c55\u5f00\u524d\u89e6\u53d1：\u52a0\u8f7d\u5b50\u8282\u70b9
\nprivate void treeView1_BeforeExpand(object sender, TreeViewCancelEventArgs e)
\n{
\n \u00a0 \u00a0\/\/ \u82e5\u8282\u70b9\u6807\u8bb0\u4e3a\u201c\u672a\u52a0\u8f7d\u201d，\u5219\u52a0\u8f7d\u5b50\u8282\u70b9
\n \u00a0 \u00a0if (e.Node.Tag != null && e.Node.Tag.ToString() == "unloaded")
\n \u00a0 {
\n \u00a0 \u00a0 \u00a0 \u00a0\/\/ \u6a21\u62df\u4ece\u6570\u636e\u5e93\/\u6587\u4ef6\u7cfb\u7edf\u52a0\u8f7d\u5b50\u8282\u70b9
\n \u00a0 \u00a0 \u00a0 \u00a0e.Node.Nodes.Add("\u62a5\u544a.docx");
\n \u00a0 \u00a0 \u00a0 \u00a0e.Node.Nodes.Add("\u6570\u636e.xlsx");
\n \u00a0 \u00a0 \u00a0 \u00a0
\n \u00a0 \u00a0 \u00a0 \u00a0\/\/ \u6807\u8bb0\u4e3a\u5df2\u52a0\u8f7d
\n \u00a0 \u00a0 \u00a0 \u00a0e.Node.Tag = "loaded";
\n \u00a0 }
\n}<\/p>\n\u4e94\u3001\u5e38\u89c1\u95ee\u9898\u4e0e\u89e3\u51b3\u65b9\u6848<\/h4>\n
1. \u8282\u70b9\u592a\u591a\u5bfc\u81f4\u52a0\u8f7d\u5361\u987f<\/h5>\n
- \n
- \n
\u539f\u56e0：\u4e00\u6b21\u6027\u52a0\u8f7d\u5927\u91cf\u8282\u70b9（\u5c24\u5176\u662f\u6df1\u5c42\u7ea7）\u4f1a\u5360\u7528\u5927\u91cf\u5185\u5b58\u548c UI \u7ebf\u7a0b\u8d44\u6e90\u3002<\/p>\n<\/li>\n
- \n
\u89e3\u51b3：\u91c7\u7528\u5ef6\u8fdf\u52a0\u8f7d（\u89c1\u8fdb\u9636\u7528\u6cd5 4），\u4ec5\u5728\u8282\u70b9\u5c55\u5f00\u65f6\u52a0\u8f7d\u5b50\u8282\u70b9；\u6216\u4f7f\u7528\u865a\u62df\u6a21\u5f0f（VirtualMode）\u3002<\/p>\n<\/li>\n<\/ul>\n
2. \u65e0\u6cd5\u7f16\u8f91\u8282\u70b9\u6587\u672c<\/h5>\n
- \n
- \n
\u539f\u56e0：\u9ed8\u8ba4AllowEdit = false，\u6216\u672a\u89e6\u53d1\u7f16\u8f91\u6a21\u5f0f\u3002<\/p>\n<\/li>\n
- \n
\u89e3\u51b3：\u8bbe\u7f6etreeView1.AllowEdit = true，\u5e76\u901a\u8fc7node.BeginEdit()\u624b\u52a8\u89e6\u53d1\u7f16\u8f91（\u5982\u53cc\u51fb\u8282\u70b9\u65f6）\u3002<\/p>\n<\/li>\n<\/ul>\n
3. \u52fe\u9009\u7236\u8282\u70b9\u65f6\u81ea\u52a8\u52fe\u9009\u6240\u6709\u5b50\u8282\u70b9<\/h5>\n
- \n
- \n
\u9700\u6c42：\u52fe\u9009\u7236\u8282\u70b9\u65f6，\u5176\u4e0b\u6240\u6709\u5b50\u8282\u70b9\u81ea\u52a8\u52fe\u9009；\u53d6\u6d88\u7236\u8282\u70b9\u52fe\u9009\u65f6，\u5b50\u8282\u70b9\u4e5f\u53d6\u6d88\u3002<\/p>\n<\/li>\n
- \n
\u89e3\u51b3：\u5728AfterCheck\u4e8b\u4ef6\u4e2d\u9012\u5f52\u5904\u7406\u5b50\u8282\u70b9：<\/p>\n<\/li>\n<\/ul>\n
private void treeView1_AfterCheck(object sender, TreeViewEventArgs e)
\n{
\n \u00a0 \u00a0\/\/ \u907f\u514d\u9012\u5f52\u89e6\u53d1\u6b7b\u5faa\u73af（\u5224\u65ad\u662f\u5426\u4e3a\u7528\u6237\u64cd\u4f5c）
\n \u00a0 \u00a0if (e.Action != TreeViewAction.Unknown)
\n \u00a0 {
\n \u00a0 \u00a0 \u00a0 \u00a0\/\/ \u9012\u5f52\u8bbe\u7f6e\u5b50\u8282\u70b9\u7684\u52fe\u9009\u72b6\u6001
\n \u00a0 \u00a0 \u00a0 \u00a0SetChildNodesCheckState(e.Node, e.Node.Checked);
\n \u00a0 }
\n}
\n\u200b
\n\/\/ \u9012\u5f52\u8bbe\u7f6e\u5b50\u8282\u70b9\u52fe\u9009\u72b6\u6001
\nprivate void SetChildNodesCheckState(TreeNode parentNode, bool isChecked)
\n{
\n \u00a0 \u00a0foreach (TreeNode childNode in parentNode.Nodes)
\n \u00a0 {
\n \u00a0 \u00a0 \u00a0 \u00a0childNode.Checked = isChecked;
\n \u00a0 \u00a0 \u00a0 \u00a0\/\/ \u82e5\u6709\u5b50\u8282\u70b9，\u7ee7\u7eed\u9012\u5f52
\n \u00a0 \u00a0 \u00a0 \u00a0if (childNode.Nodes.Count > 0)
\n \u00a0 \u00a0 \u00a0 {
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0SetChildNodesCheckState(childNode, isChecked);
\n \u00a0 \u00a0 \u00a0 }
\n \u00a0 }
\n}<\/p>\n4. \u62d6\u62fd\u8282\u70b9\u8c03\u6574\u5c42\u7ea7<\/h5>\n
- \n
- \n
\u9700\u6c42：\u5141\u8bb8\u7528\u6237\u62d6\u62fd\u8282\u70b9\u5230\u5176\u4ed6\u8282\u70b9\u4e0b，\u8c03\u6574\u5c42\u7ea7\u7ed3\u6784\u3002<\/p>\n<\/li>\n
- \n
\u89e3\u51b3：\u542f\u7528AllowDragDrop = true，\u5e76\u5904\u7406ItemDrag\u3001DragEnter\u3001DragDrop\u4e8b\u4ef6：<\/p>\n<\/li>\n<\/ul>\n
\/\/ \u542f\u7528\u62d6\u62fd
\ntreeView1.AllowDragDrop = true;
\n\u200b
\n\/\/ \u5f00\u59cb\u62d6\u62fd\u8282\u70b9
\nprivate void treeView1_ItemDrag(object sender, ItemDragEventArgs e)
\n{
\n \u00a0 \u00a0DoDragDrop(e.Item, DragDropEffects.Move); \/\/ \u5f00\u59cb\u62d6\u62fd
\n}
\n\u200b
\n\/\/ \u62d6\u62fd\u8fdb\u5165\u76ee\u6807\u8282\u70b9
\nprivate void treeView1_DragEnter(object sender, DragEventArgs e)
\n{
\n \u00a0 \u00a0e.Effect = DragDropEffects.Move; \/\/ \u5141\u8bb8\u79fb\u52a8
\n}
\n\u200b
\n\/\/ \u5b8c\u6210\u62d6\u62fd（\u8c03\u6574\u8282\u70b9\u5c42\u7ea7）
\nprivate void treeView1_DragDrop(object sender, DragEventArgs e)
\n{
\n \u00a0 \u00a0\/\/ \u83b7\u53d6\u62d6\u62fd\u7684\u8282\u70b9\u548c\u76ee\u6807\u8282\u70b9
\n \u00a0 \u00a0TreeNode draggedNode = e.Data.GetData(typeof(TreeNode)) as TreeNode;
\n \u00a0 \u00a0TreeNode targetNode = treeView1.GetNodeAt(treeView1.PointToClient(new System.Drawing.Point(e.X, e.Y)));
\n\u200b
\n \u00a0 \u00a0\/\/ \u6821\u9a8c：\u4e0d\u80fd\u62d6\u62fd\u5230\u81ea\u8eab\u6216\u5b50\u8282\u70b9\u4e0b
\n \u00a0 \u00a0if (draggedNode != null && targetNode != null && draggedNode != targetNode && !draggedNode.Nodes.Contains(targetNode))
\n \u00a0 {
\n \u00a0 \u00a0 \u00a0 \u00a0\/\/ \u4ece\u539f\u4f4d\u7f6e\u79fb\u9664，\u6dfb\u52a0\u5230\u76ee\u6807\u8282\u70b9\u4e0b
\n \u00a0 \u00a0 \u00a0 \u00a0draggedNode.Remove();
\n \u00a0 \u00a0 \u00a0 \u00a0targetNode.Nodes.Add(draggedNode);
\n \u00a0 \u00a0 \u00a0 \u00a0targetNode.Expand(); \/\/ \u5c55\u5f00\u76ee\u6807\u8282\u70b9
\n \u00a0 }
\n}<\/p>\n\u516d\u3001\u9002\u7528\u573a\u666f\u603b\u7ed3<\/h4>\n
\n
\u573a\u666f\u7c7b\u578b\u5b9e\u73b0\u65b9\u5f0f\u793a\u4f8b<\/tr>\n \n\n \u6587\u4ef6 \/ \u76ee\u5f55\u6d4f\u89c8\u5668<\/td>\n \u7ed3\u5408\u5ef6\u8fdf\u52a0\u8f7d + \u56fe\u6807\u8bbe\u7f6e<\/td>\n \u6a21\u62df Windows \u8d44\u6e90\u7ba1\u7406\u5668\u7684\u76ee\u5f55\u7ed3\u6784<\/td>\n<\/tr>\n \n \u7ec4\u7ec7\u67b6\u6784\u5c55\u793a<\/td>\n \u591a\u7ea7\u8282\u70b9 + \u590d\u9009\u6846（\u6279\u91cf\u9009\u62e9\u90e8\u95e8）<\/td>\n \u516c\u53f8\u90e8\u95e8 – \u5458\u5de5\u5c42\u7ea7\u3001\u6743\u9650\u89d2\u8272\u6811<\/td>\n<\/tr>\n \n \u5206\u7c7b\u83dc\u5355\u5bfc\u822a<\/td>\n \u70b9\u51fb\u8282\u70b9\u89e6\u53d1\u4e8b\u4ef6（\u52a0\u8f7d\u5bf9\u5e94\u5185\u5bb9）<\/td>\n \u8f6f\u4ef6\u5de6\u4fa7\u529f\u80fd\u5206\u7c7b\u6811\u3001\u5e2e\u52a9\u6587\u6863\u76ee\u5f55<\/td>\n<\/tr>\n \n \u6811\u5f62\u6570\u636e\u7f16\u8f91<\/td>\n \u53f3\u952e\u83dc\u5355 + \u8282\u70b9\u7f16\u8f91<\/td>\n \u81ea\u5b9a\u4e49\u5206\u7c7b\u7ba1\u7406（\u6dfb\u52a0 \/ \u5220\u9664 \/ \u91cd\u547d\u540d\u5206\u7c7b）<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u603b\u7ed3<\/h4>\n
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