带有和不带有“new"的接线事件之间的区别

本文介绍了带有和不带有“new"的接线事件之间的区别的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

在 C# 中，这两行代码有什么区别(如果有)?

In C#, what is the difference (if any) between these two lines of code?

tmrMain.Elapsed += new ElapsedEventHandler(tmrMain_Tick);

和

tmrMain.Elapsed += tmrMain_Tick;

两者的工作方式似乎完全相同.当您键入后者时，C# 是否只是假设您指的是前者?

Both appear to work exactly the same. Does C# just assume you mean the former when you type the latter?

推荐答案

我做到了

static void Hook1() { someEvent += new EventHandler( Program_someEvent ); } static void Hook2() { someEvent += Program_someEvent; }

然后在代码上运行 ildasm.生成的 MSIL 完全一样.

And then ran ildasm over the code. The generated MSIL was exactly the same.

所以回答你的问题，是的，它们是一回事.编译器只是推断你想要 someEvent += new EventHandler( Program_someEvent );-- 您可以在 MSIL 中看到它在两种情况下都创建了新的 EventHandler 对象

So to answer your question, yes they are the same thing. The compiler is just inferring that you want someEvent += new EventHandler( Program_someEvent ); -- You can see it creating the new EventHandler object in both cases in the MSIL