private async void GetNewListings() { ListingsProgressBar.Visibility = Visibility.Visible; var manager = new RequestManager(); var newListings = await manager.GetListings(); if (newListings != null) { _listings = new ObservableCollection<Listing>(newListings); } ListingsView.ItemsSource = _listings; ListingsProgressBar.Visibility = Visibility.Collapsed; if (_listings.Count > 0) { ListingsView.SelectedIndex = 0; } }