private async void Selector_OnSelectionChanged(object sender, SelectionChangedEventArgs e) { if (e.AddedItems.Count > 0) { BingLanguage b = e.AddedItems[0] as BingLanguage; if (b != null) { if (b.Code == Vm.LanguageCode) { return; } SettingManager.BingSetLanguage(b.Code); Vm.LanguageCode = b.Code; } await Vm.GetImageRoot(); await StartVm.UpdateListTask(); } }