private async void CreateAgencyBtn(object sender, RoutedEventArgs e) { await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.High, () => { AgencyNameInput.Background = new SolidColorBrush(Colors.White); }); if (AgencyNameInput.Text == string.Empty || !Company.AddAgency(AgencyNameInput.Text)) { await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () => { AgencyNameInput.Background = new SolidColorBrush(Colors.Red); }); return; } AgencyNameInput.Text = string.Empty; AgenciesList.ItemsSource = Company.Agencies; }