private void GOEPPImport_Click(object sender, RoutedEventArgs e) { tournamentController.Import(new NewTournamentDialog(), false); if (tournamentController.ActiveTournament != null) { ComboBoxRounds.Items.Clear(); InitDataGridPlayer(); InitDataGridPairing(); SetGUIState(true); DataGridPlayer.ItemsSource = tournamentController.ActiveTournament.Participants; RefreshDataGridPlayer(tournamentController.ActiveTournament.Participants); } }