在VB.net中显式添加删除事件

概述在C#中,您可以在订阅/取消订阅事件时定义显式添加/删除代码. 这可能在VB.net中吗？ Imports System.Runtime.CompilerServices... Private propchanged As PropertyChangedEventHandler Public Custom Event PropertyChanged As PropertyCha 在C#中,您可以在订阅/取消订阅事件时定义显式添加/删除代码.

这可能在VB.net中吗？

解决方法

imports System.Runtime.CompilerServices...    Private propchanged As PropertyChangedEventHandler    Public Custom Event PropertyChanged As PropertyChangedEventHandler        <MethodImpl(MethodImplOptions.Synchronized)> _        AddHandler(ByVal value As PropertyChangedEventHandler)            propchanged = DirectCast([Delegate].Combine(propchanged,value),PropertyChangedEventHandler)        End AddHandler        <MethodImpl(MethodImplOptions.Synchronized)> _        RemoveHandler(ByVal value As PropertyChangedEventHandler)            propchanged = DirectCast([Delegate].Remove(propchanged,PropertyChangedEventHandler)        End RemoveHandler        RaiseEvent(ByVal sender As Object,ByVal e As System.ComponentModel.PropertyChangedEventArgs)            Dim handler = propchanged            If handler IsNot @R_301_4910@ Then handler(sender,e)        End RaiseEvent    End Event

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