private void cmdAddSeason_Click(object sender, RoutedEventArgs e)
 {
     if (_objEntity == null)
     {
         new MessageBoxYesNo("You must first save at least one season for this Series.", false, true).ShowDialog();
     }
     else
     {
         if (SerieServices.AddNewSeason(_objEntity) == true)
         {
             new MessageBoxYesNo("A new season was added", false, false).ShowDialog();
             NewSeasonAdded = true;
         }
         else
         {
             new MessageBoxYesNo("Error occured, please contact us", false, true).ShowDialog();
         }
     }
 }