关闭esc的mdi孩子

Question

I need to close an mdi child with Esc key. I tried using keydown and keypress events, but i cant even get the form respond to those events when pressing any key.

Answer 1

try this

private void Form_KeyDown(object sender, KeyEventArgs e)
{
    if (e.KeyCode == Keys.Escape)
    {
        this.Close();
    }
}

or make use of

Form.CancelButton Property - Gets or sets the button control that is clicked when the user presses the ESC key.

Answer 2

Set the Property of the Form KeyPreview=True and go with Keydown Event

if (e.KeyCode == Keys.Escape){
   this.Close();
}

Answer 3

If your MDI Form has Close button, then you can assign CancelButton property with the ID of Close button in your Form.

So when you press ESC key, it will call Close button click.

More : CancelButton

Answer 4

First you must set the Form.KeyPreview = true and you must know what is the Difference between the KeyUp and KeyDown Event

private void Form1_KeyUp(object sender, KeyEventArgs e)
{
    if (e.KeyCode == Keys.Escape)
    {
        this.Close();
    }
}

and if you want the KeyPress Event

private void Form1_KeyPress(object sender, KeyPressEventArgs e)
{
    if (e.KeyChar == 27)
    {
        this.Close();
    }
}