lambda表达式和事件处理程序？ [英] lambda expression and event handler?

问题描述

有人向我提到c＃支持使用lambda表达式作为事件处理程序，任何人都可以和我分享一些参考吗？

Someone mentioned to me that c# supports to use lambda expression as event handler, can anyone share with me some reference on this?

首选代码段。 / p>

A code snippet is preferred.

推荐答案

您可以使用lambda表达式构建匿名方法，该方法可以附加到事件上。

You can use a lambda expression to build an anonymous method, which can be attached to an event.

例如，如果您制作一个带有按钮和标签的Windows窗体，您可以在构造函数中添加（在 InitializeComponent（）之后）：

For example, if you make a Windows Form with a Button and a Label, you could add, in the constructor (after InitializeComponent()):

 this.button1.Click += (o,e) =>
     {
        this.label1.Text = "You clicked the button!";
     };

这将导致标签随着单击按钮而更改。

This will cause the label to change as the button is clicked.

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