是否可以从事件中取消订阅匿名方法?
Is it possible to unsubscribe an anonymous method from an event?
如果我订阅这样的活动:
If I subscribe to an event like this:
void MyMethod()
{
Console.WriteLine("I did it!");
}
MyEvent += MyMethod;
我可以这样取消订阅:
MyEvent -= MyMethod;
但如果我使用匿名方法订阅:
But if I subscribe using an anonymous method:
MyEvent += delegate(){Console.WriteLine("I did it!");};
是否可以取消订阅此匿名方法?如果有,怎么做?
is it possible to unsubscribe this anonymous method? If so, how?
Action myDelegate = delegate(){Console.WriteLine("I did it!");};
MyEvent += myDelegate;
// .... later
MyEvent -= myDelegate;
只需保留对委托的引用即可.
Just keep a reference to the delegate around.
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