如何使一个事件处理程序适用于C＃中的多个控件？ [英] How make one event handler that applies to multiple controls in C#?

问题描述

在Visual Basic中，我知道该怎么做，但是我对C＃还是陌生的，所以你们能告诉我如何用鼠标悬停使一个相同事件应用于多个控件的私有无效吗？有一个例子：

In Visual Basic I knew how to do it, but I'm new to C#, so can you guys tell me how do I make a "private void" with mouse hover that applies the same event to multiple controls? There's an example:

private void button1, button2, button3, button4_MouseHover(object sender, EventArgs e)
{
     btn.Image = pic
}

推荐答案

只需声明一个事件处理程序，然后将每个按钮指向它：

Just declare one event handler and point each button at it:

private void Common_MouseHover(object sender, EventArgs e)
{
     Button btn = sender as Button;
     if (btn != null)
         btn.Image = pic
}

然后在代码或设计器中使用

Then in code or designer:

button1.MouseHover += Common_MouseHover;
button2.MouseHover += Common_MouseHover;
// .. etc

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