private static void Action_ValueChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            HexByteControl ctrl = d as HexByteControl;

            if (e.NewValue != e.OldValue)
            {
                ctrl.UpdateBackGround();
            }
        }
        private static void IsHighLight_PropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            HexByteControl ctrl = d as HexByteControl;

            if (e.NewValue != e.OldValue)
            {
                ctrl._keyDownLabel = KeyDownLabel.FirstChar;
                ctrl.UpdateBackGround();
            }
        }