C＃中的KeyEventArgs [英] KeyEventArgs in C#

问题描述

我对如何抓住按下的键有疑问。这是我的代码，但我无法获得所按下的键。我正在使用KeyEventArgs声明新变量，然后进行比较。

I have a problem to how to catch which key is pressed. This is my code, but i cant get what key was pressed. I'm using KeyEventArgs for declaration of new variable and then comparing it.

    private void textBox2_TextChanged(object sender, EventArgs e)
    {
        KeyEventArgs k = null;
        if (e is KeyEventArgs)
        {
            k = (KeyEventArgs)e;
        }

        if (k.KeyCode == Keys.Enter)
        {
            // do something here
        }


    }

推荐答案

您需要添加：

 [component_name].KeyDown += new System.Windows.Forms.KeyEventHandler(this.Key_Pressed_Method);

到表单的构造函数中。然后，您可以在Key_Pressed_Method（）方法中定义要执行的操作。

into the constructor of your Form. Then, you can define what you want to do in Key_Pressed_Method() method.

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