C＃-Windows窗体中的KeyDown事件问题

Question

When the main form loads, I am trying to set up a key event handler as follows:

private void FormMain_Load(object sender, EventArgs e)
{
    KeyDown += FormMain_KeyDown;
}

and the function that is called:

private void FormMain_KeyDown(object sender, KeyEventArgs e)
{
    if (e.KeyCode == Keys.Escape)
    {
        // Do something.
    }
}

The problem is that the form doesn't react to Escape (or any other key I tried). And the funny thing is that a different form from the same project uses similar code without any issues. Can anyone please tell me what I am doing wrong?

Answer 1

There's a Property called KeyPreview on the form, you need to set it to true. Then on keypress your handler will fire, then any handler on the control that has focus will.