在C#中如果我想创建一个“自定义事件”,你可以这样做：
private EventHandler _MyEvent;
Public Event EventHandler MyEvent
{
add{ _MyEvent += value; }
remove{ _MyEvent -= Value; }
}
protected void RaiseMyEvent()
{
if(_MyEvent != nul)
_MyEvent(this,EventArgs.Empty);
}
在VB中,这不是那么简单,我也无法在网上找到任何帮助.
这不起作用：
private _MyEvent as EventHandler
Public Custom Event MyEvent as EventHandler
AddHandler(ByVal value as EventHandler)
_MyEvent += value 'does not work
addhandler _MyEvent,value 'does not work
[Delegate].Combine(_MyEvent,value) '_MyEvent still nothing
End AddHandler
RemoveHandler(ByVal value as EventHandler)
'Same kind of stuff here
End RemoveHandler
RaiseEvent(sender as Object,e as EventArgs)
if(_MyEvent IsNot Nothing) Then '_MyEvent is always nothing
_MyEvent.Invoke(sender,e)
End If
End RaiseEvent
End Event
请帮忙.