如何在C＃中从Action委托中删除方法
可能重复：
C＃添加和删除匿名事件处理程序
假设我有这样声明的Action委托：
suppose I have an Action delegate declared this way:
public event Action<MenuTraverser.Actions> menuAction;
我正在以这种方式将方法与之关联：
I am associating a method to it this way:
menuInputController.menuAction += (MenuTraverser.Actions action) => this.traverser.OnMenuAction(action);
现在，一切正常，但是在某些情况下，我需要删除委托方法，但我不这样做不知道如何。
我尝试过这种方式，但是不起作用：
Now, all works fine, but in certain situation I need to remove the delegated method and I don't know how. I tried this way but doesn't work:
menuInputController.menuAction -= (MenuTraverser.Actions action) => this.traverser.OnMenuAction(action);
我该怎么做？我需要不再调用我的方法OnMenuAction。
How can I do such a thing? I need that my method OnMenuAction will be no longer called.
由于您的签名似乎匹配（假设您有一个 void 返回类型），则无需添加匿名函数，但可以直接使用方法组：
Since your signature seems to match (assuming that you have a void return type), you shouldn't need to add an anonymous function but you can use the method group directly:
menuInputController.menuAction += this.traverser.OnMenuAction;
在这种情况下，退订也应该有效：
And in this case unsubscribing should work as well:
menuInputController.menuAction -= this.traverser.OnMenuAction;