在 C# 中取消订阅匿名方法

Unsubscribe anonymous method in C#(在 C# 中取消订阅匿名方法)

问题描述

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?

推荐答案

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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