+ =与活动运营 [英] += operator with Events

问题描述

public void Bar()
{
    Foo foo = new Foo();
    **foo.MyEvent += foo_MyEvent;**
    foo.FireEvent();        
}

void foo_MyEvent(object sender, EventArgs e)
{
    ((Foo)sender).MyEvent -= foo_MyEvent;
}

嘿，我有点不熟悉的事件，可能有人告诉我是什么+ =运算符的事件呢？

Hey I'm a bit unfamiliar with events, could someone tell me what the += operator does with events?

推荐答案

+ = 订阅的事件。上的 + = 将被添加到该事件跟踪的内部列表右手侧委托或方法，并且当所属类触发该事件，列表中的所有与会代表将被调用。

+= subscribes to an event. The delegate or method on the right-hand side of the += will be added to an internal list that the event keeps track of, and when the owning class fires that event, all the delegates in the list will be called.

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