捕获UserControl中的KeyDown事件 [英] Capturing KeyDown events in a UserControl

问题描述

我有一个带有几个子控件的用户控件。我需要用户界面来响应按键，因此我决定将处理代码放入MainControl_KeyDown事件中。但是，当我在应用程序中按下键时，此事件不会触发。

I have a user control with several child controls. I need the user interface to react to keypresses, so I decided to put the handling code in a MainControl_KeyDown event. However, when I press a key in my application, this event does not fire.

我通过搜索引擎找到了一种解决方案，该解决方案依赖于Windows API的使用，我想避免这种情况，因为对于.NET框架应该正确支持的功能来说似乎有些过分。

I have found a solution through a search engine which relies upon use of the Windows API, which I would like to avoid, as it seems like overkill for what should be a function that is properly supported by the .NET framework.

推荐答案

您可以为用户控件中的每个子控件添加一个KeyDown事件处理程序，并在每个控件中触发用户控件的KeyDown事件，如下所示：

You could add a KeyDown event handler for every child control in your user control and fire the KeyDown event of your user control in each, like so:

private void textBox1_KeyDown(object sender, KeyEventArgs e)
{
    this.OnKeyDown(e);
}

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