使用反射来确定控件是否支持事件

Question

为了避免try-catch块，有没有办法确定控件是否支持指定的事件而没有try-catch块？

Dim d As [Delegate] = [Delegate].CreateDelegate(eventHandler.EventHandlerType, _ 
                   Me, _ 
                   "OnControlValueChanged") '<< 

Answer 1

使用反射：

Dim events As System.Reflection.EventInfo() = GetType(Control).GetEvents() 
For Each someEvent As System.Reflection.EventInfo In events 
    If someEvent.Name = "OnControlValueChanged" Then 
     'Do what you need to do 
    End If 
Next