void textBoxMessage_PreviewMouseUp(object sender, MouseButtonEventArgs e)
{
Binding = new ControlBinding { MButton = e.ChangedButton, };
DialogResult = true;
Close();
e.Handled = true;
}
private void MyPreviewKeyUp(object sender, KeyEventArgs e)
{
Binding = new ControlBinding { KeyboardKey = e.Key, };
DialogResult = true;
Close();
e.Handled = true;
}