private void BtRateClick(object sender, RoutedEventArgs e)
 {
     var cd = new RateDetail(PageMode.AddMode);
     cd.Show();
 }
 private void RateViewExecuted(object sender, ExecutedRoutedEventArgs e)
 {
     var rateId = (int) e.Parameter;
     var cd = new RateDetail(PageMode.ViewMode, rateId);
     cd.Show();
     e.Handled = true;
 }