public ShoppingListsViewModel()
{
Title = "My Lists";
Items = new ObservableCollection <ShoppingList>();
LoadItemsCommand = new Command(async() => await ExecuteLoadItemsCommand());
MessagingCenter.Subscribe <NewShoppingListPage, ShoppingList>(this, "AddShoppingList", async(obj, item) =>
{
var newItem = item as ShoppingList;
Items.Add(newItem);
await DataStoreShoppingList.AddItemAsync(newItem);
});
}
async Task ExecuteLoadItemsCommand()
{
IsBusy = true;
try
{
Items.Clear();
var items = await DataStoreShoppingList.GetItemsAsync(true);
foreach (var item in items)
{
Items.Add(item);
}
}
catch (Exception ex)
{
Debug.WriteLine(ex);
}
finally
{
IsBusy = false;
}
}
