{"id":68311,"date":"2026-01-30T01:17:13","date_gmt":"2026-01-29T17:17:13","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/68311.html"},"modified":"2026-01-30T01:17:13","modified_gmt":"2026-01-29T17:17:13","slug":"vb-net-%e4%b8%ad%e7%9a%84%e5%8d%95%e4%be%8b%e6%a8%a1%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/68311.html","title":{"rendered":"VB.NET \u4e2d\u7684\u5355\u4f8b\u6a21\u5f0f"},"content":{"rendered":"<h4>\u4e00\u3001\u524d\u8a00<\/h4>\n<p>\u5355\u4f8b\u6a21\u5f0f\u4fdd\u8bc1\u4e00\u4e2a\u7c7b\u5728\u6574\u4e2a\u7a0b\u5e8f\u8fd0\u884c\u671f\u95f4&#xff0c;\u53ea\u6709\u4e00\u4e2a\u5b9e\u4f8b&#xff0c;\u5e76\u63d0\u4f9b\u4e00\u4e2a\u5168\u5c40\u8bbf\u95ee\u70b9\u3002<\/p>\n<p>\u5355\u4f8b\u6a21\u5f0f\u7684\u6838\u5fc3\u8981\u70b9&#xff1a;\u6784\u9020\u51fd\u6570\u79c1\u6709\u5316\u3001\u5185\u90e8\u6301\u6709\u552f\u4e00\u5b9e\u4f8b\u3001\u5bf9\u5916\u63d0\u4f9b\u7edf\u4e00\u8bbf\u95ee\u5165\u53e3<\/p>\n<h4>\u4e8c\u3001\u57fa\u7840\u7684\u5355\u4f8b\u5b9e\u73b0<\/h4>\n<p>\u975e\u7ebf\u7a0b\u5b89\u5168<\/p>\n<p>Public Class Singleton<\/p>\n<p>    Private Shared _instance As Singleton<\/p>\n<p>    Private Sub New()<br \/>\n    End Sub<\/p>\n<p>    Public Shared Function Instance() As Singleton<br \/>\n        If _instance Is Nothing Then<br \/>\n            _instance &#061; New Singleton()<br \/>\n        End If<br \/>\n        Return _instance<br \/>\n    End Function<\/p>\n<p>End Class<\/p>\n<h4>\u4e09\u3001\u7ebf\u7a0b\u5b89\u5168\u7684\u5355\u4f8b<\/h4>\n<ul>\n<li>\u4f7f\u7528 SyncLock<\/li>\n<\/ul>\n<p>Public Class Singleton<\/p>\n<p>    Private Shared _instance As Singleton<br \/>\n    Private Shared ReadOnly _lock As New Object()<\/p>\n<p>    Private Sub New()<br \/>\n    End Sub<\/p>\n<p>    Public Shared ReadOnly Property Instance As Singleton<br \/>\n        Get<br \/>\n            SyncLock _lock<br \/>\n                If _instance Is Nothing Then<br \/>\n                    _instance &#061; New Singleton()<br \/>\n                End If<br \/>\n                Return _instance<br \/>\n            End SyncLock<br \/>\n        End Get<br \/>\n    End Property<\/p>\n<p>End Class<\/p>\n<ul>\n<li>\u53cc\u91cd\u68c0\u67e5\u9501<\/li>\n<\/ul>\n<p>Public Class Singleton<\/p>\n<p>    Private Shared _instance As Singleton<br \/>\n    Private Shared ReadOnly _lock As New Object()<\/p>\n<p>    Private Sub New()<br \/>\n    End Sub<\/p>\n<p>    Public Shared ReadOnly Property Instance As Singleton<br \/>\n        Get<br \/>\n            If _instance Is Nothing Then<br \/>\n                SyncLock _lock<br \/>\n                    If _instance Is Nothing Then<br \/>\n                        _instance &#061; New Singleton()<br \/>\n                    End If<br \/>\n                End SyncLock<br \/>\n            End If<br \/>\n            Return _instance<br \/>\n        End Get<br \/>\n    End Property<\/p>\n<p>End Class<\/p>\n<ul>\n<li>Shared \u53ea\u8bfb\u5b9e\u4f8b\u3001\u6700\u7b80\u6d01\u5b89\u5168\u7684\u5199\u6cd5<\/li>\n<\/ul>\n<p>Public Class Singleton<\/p>\n<p>    Public Shared ReadOnly Instance As New Singleton()<\/p>\n<p>    Private Sub New()<br \/>\n    End Sub<\/p>\n<p>End Class<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u3001\u524d\u8a00\u5355\u4f8b\u6a21\u5f0f\u4fdd\u8bc1\u4e00\u4e2a\u7c7b\u5728\u6574\u4e2a\u7a0b\u5e8f\u8fd0\u884c\u671f\u95f4&#xff0c;\u53ea\u6709\u4e00\u4e2a\u5b9e\u4f8b&#xff0c;\u5e76\u63d0\u4f9b\u4e00\u4e2a\u5168\u5c40\u8bbf\u95ee\u70b9\u3002\u5355\u4f8b\u6a21\u5f0f\u7684\u6838\u5fc3\u8981\u70b9&#xff1a;\u6784\u9020\u51fd\u6570\u79c1\u6709\u5316\u3001\u5185\u90e8\u6301\u6709\u552f\u4e00\u5b9e\u4f8b\u3001\u5bf9\u5916\u63d0\u4f9b\u7edf\u4e00\u8bbf\u95ee\u5165\u53e3\u4e8c\u3001\u57fa\u7840\u7684\u5355\u4f8b\u5b9e\u73b0\u975e\u7ebf\u7a0b\u5b89\u5168Public Class SingletonPrivate Shared _instance As SingletonPrivate Sub New()End SubPublic Shared Function Instance() As Singlet<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[895,2246],"topic":[],"class_list":["post-68311","post","type-post","status-publish","format-standard","hentry","category-server","tag-net","tag-2246"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - 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