protected void removeColleague(object sender, RoutedEventArgs e) { if (Session.UserData.kategoria >= 1) { MenuItem menu = sender as MenuItem; ModelErtesitendok items = menu.DataContext as ModelErtesitendok; Interview.DeleteInvited(items.id); choose_editlist.ItemsSource = Interview.Data_ProjektErtesitendokKapcsolt(); ertesitendok_editlist.ItemsSource = Interview.Data_InterjuErtesitendokKapcsolt(); } }