在WinForm C＃上捕获KeyUp事件

Question

I attempt to catch F5 on System.Windows.Forms for that I wrote:

partial class MainForm
{
   (...)
   this.KeyUp += new System.Windows.Forms.KeyEventHandler(this.MainForm_KeyUp);
   (...)
}

public partial class MainForm : Form
{
    (...)

    private void MainForm_KeyUp(object sender, KeyEventArgs e)
    {
        Log("MainForm_KeyUp");
        if (e.KeyCode == Keys.F5)
        {
            RefreshStuff();
        }
    }
}

But my event catching looks not working.

Do you know how to cactch EventKey on System.Windows.Forms ?

Answer 1

The KeyPreview property of the Form must be set to true.

When this property is set to true, the form will receive all KeyPress, KeyDown, and KeyUp events. After the form's event handlers have completed processing the keystroke, the keystroke is then assigned to the control with focus.