+= 带有事件的运算符 [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，我对事件有点陌生，有人能告诉我 += 运算符对事件做了什么吗?

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

推荐答案

+= 订阅事件.+= 右侧的委托或方法将被添加到事件跟踪的内部列表中，并且当所属类触发该事件时，列表中的所有委托将被调用.

+= 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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