我是否应该实例化一个新的委托?

问题描述

我刚刚意识到我可以通过两种方式添加事件处理程序:

I just realized I can add an event handler in two ways:

考虑这样的事件处理程序:

Consider an event handler like so:

private void MyEventHandler()
{}

方法一:实例化一个新的委托

Method 1: Instantiate a new delegate

MyObject.MyEvent += new Action(MyEventHandler);

方法 2:添加事件处理程序而不实例化新委托

Method 2: Add event handler without instantiating a new delegate

MyObject.MyEvent += MyEventHandler;

这两种实现之间有什么区别需要考虑吗?

Is there any difference in between these two implementations that should be considered?

推荐答案

没有区别，生成的IL是一样的..net/c# 2.0 中引入了较短的形式作为一种便利功能，尽管 Visual Studio 仍然在 Tab Completion 上使用第一种形式.

There is no difference, the generated IL is the same. The shorter form was introduced in .net/c# 2.0 as a convenience function, although Visual Studio still does the first form on Tab Completion.

有关更多信息，请参阅此问题.

See this question for some more info.

这篇关于我是否应该实例化一个新的委托?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持跟版网！