async Task LoadDataAsync()
{
try {
IsBusy = true;
var items = await FoodManager.GetAsync();
var favorites = await FavoriteManager.GetAsync();
var fooditems = from fi in items
join fav in favorites on fi.Id equals fav.FoodItemId
select fi;
FoodItems.Clear();
foreach (var item in fooditems)
{
FoodItems.Add(new FoodViewModel(item));
}
} finally {
IsBusy = false;
}
}
public async void LoadFoodItems()
{
IsBusy = true;
FoodItems = new ObservableCollection <Food>(await manager.GetAsync());
IsBusy = false;
}