如何将原始对象的事件附加到深度复制的克隆 [英] How to Attach the Events of an Original Object to a Deep Copied Clone

问题描述

昨天跟着我的问题，在C＃中对事件进行深入复制，并将原始对象的事件附加到克隆拷贝是非常简单的，您只需将Copy中的事件声明设置为原始值中的值即可。 事件附加后深层克隆

Following up on my question yesterday to deepcopy an object with events in C# and attach the events of the original object to the Cloned copy is pretty easy, you just set the Event declaration in the Copy = the value in the original. Deep Clone when events are attached

如何在VB.Net中这样做？ （使用.Net 2）

How do you do this in VB.Net? (Using .Net 2)

我希望也许有反思的东西，你可以检查什么事件被绑定，并以某种方式将它们转移到新对象。 >

I was hoping maybe there was something with reflection where you can examine what events are bound and somehow transfer those to the new object.

推荐答案

是的，你可以，而不是那么困难，但是似乎有很多关于这个的信息，这么大的问题。 / p>

yes you can, and its not that difficult, but it seems there isint a whole lot of info on this, so great question.

Dim sourceObject As New FooBar
Dim destObject As New FooBar

AddHandler sourceObject.SomeEvent, AddressOf myFunc


Dim miHandler As FieldInfo = GetType(FooBar).GetField("SomeEvent", BindingFlags.Static Or BindingFlags.NonPublic Or BindingFlags.Instance)
Dim sourceDelegate As [Delegate] = miHandler.GetValue(sourceObject)

Dim addDelegate As [Delegate] = sourceDelegate.GetInvocationList().First() ' if its multicast, then you'll need to copy the lot

AddHandler destObject.SomeEvent, addDelegate

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