private void DeleteSelectedFestival()
        {
            if (!DBContext.IsOnline)
            {
                MessageBox.Show("Applicatie is in offline modus.", "Offline Modus");
                return;
            }
            var confirmResult = MessageBox.Show("Bent u zeker dat u " + SelectedFestival.Name.ToString() + " wenst te verwijderen?", "Festival verwijder waarchuwing", MessageBoxButton.YesNo);

            if (confirmResult == MessageBoxResult.Yes)
            {
                SelectedFestival.IsArchived = true;
                RaisePropertyChanged("SelectedFestival");
                SelectedFestival.Update();
                SelectedFestival = null;
                RefreshView();
            }
        }
 private void UpdateSelectedFestival()
 {
     SelectedFestival.Update();
 }