KeyDown event

[balexei]

Dear CodeGurus,

I am trying to assign some actions to the KeyDown event on my form (to any key, say 'a'), so I try the following:

        private void Form1_KeyDown(object sender, KeyEventArgs e)
        {
            if(e.KeyCode != Keys.ShiftKey && e.KeyCode != Keys.ControlKey)
                MessageBox.Show(String.Format("{0:D}", e.KeyCode), "Message");
        }

My understanding that this should pop-up the Message Window any time when I press any character key on the keyboard. However, this works only if I have no controls on the form, if there is anything on it I get nothing. Can anybody explain why this is happening? How can I get it to work???