/// <summary> /// Event handler for key down of message textbox /// Check if Ctrl+A is pressed, if yes, select all and suppress beep /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void TxtMsg_KeyDown(object sender, KeyEventArgs e) { if (e.Control && e.KeyCode == Keys.A) { //Select all TxtMsg.SelectAll(); //Suppress beep e.Handled = true; e.SuppressKeyPress = true; } }