private void Delete(object sender, RoutedEventArgs e)
 {
     if (
         MessageWindow.ShowConfirmMessage(
             "You are about to delete current MembershipType information. Do you want to proceed?") ==
         MessageBoxResult.Yes)
     {
         _currentMembershipType.Destroy();
         MessageWindow.ShowNotifyMessage("MembershipType information deleted!");
         DataContext = _currentMembershipType = new MembershipType(0);
     }
 }