private void SearchBtn_Click(object sender, RoutedEventArgs e) { List <List <string> > results; StationsBox.Clear(); if (AirportsOnly.IsChecked == true) { var stations = Manager.FindStation(Search.Text, Stations); results = Manager.FindAirport(stations); } else { results = Manager.FindStation(Search.Text, Stations); } foreach (var result in results) { StationsBox.Text += result[3] + ", " + result[2] + ", " + result[1] + ", " + result[0] + "\n"; } }