private void btnRetry_Click(object sender, RoutedEventArgs e)
 {
     if (CashmaticCommands.IsConnected())
     {
         Debug.Log("CashmaticApp", "Button retry click");
         _ob.ready2order.paymentMethod_id       = _ob.panda.paymentMethodCASH;
         Application.Current.MainWindow.Content = new PaymentPandingCash(_ob);
     }
 }