使用新处理程序附加事件处理程序与直接分配它 [英] Attaching Eventhandler with New Handler vs Directly assigning it

问题描述

创建新的事件处理程序与直接将其分配给事件的实际区别、优点和缺点是什么?

What is the actual difference, advantages and disadvantages, of creating a new event handler, vs assigning it directly to the event?

_gMonitor.CollectionChanged += new NotifyCollectionChangedEventHandler(OnCollectionChanged);

对比

_gMonitor.CollectionChanged += OnCollectionChanged;

推荐答案

在 C# 2.0 及更高版本中，它们是相同的.在 C# 1.2(.NET 1.1 附带的那个)中，只有第一个语法(使用 new)编译;-p

In C# 2.0 and above, they are identical. In C# 1.2 (the one that shipped with .NET 1.1), only the first syntax (with new) compiles ;-p

第二种语法可以节省按键次数，但 VS 智能感知通常会建议第一种.最终，它几乎没有什么区别.我通常在在线代码示例中使用第二种语法，只是因为它避免超过(窄)列宽！

The second syntax saves key presses, but VS intellisense will typically suggest the first. Ultimately, it makes very little difference. I generally use the second syntax in code-samples online, simply because it avoids going over the (narrow) column width!

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