public RecetaDetailsViewModel()
{
Title = "Browse";
Items = new ObservableRangeCollection <RecetaDetails>();
LoadItemsCommand = new Command(async() => await ExecuteLoadItemsCommand());
MessagingCenter.Subscribe <NewItemPage, RecetaDetails>(this, "AddItem", async(obj, item) =>
{
var _item = item as RecetaDetails;
Items.Add(_item);
await DataStoreRecetaDetalle.AddItemAsync(_item);
});
}
async Task ExecuteLoadItemsCommand()
{
if (IsBusy)
{
return;
}
IsBusy = true;
try
{
Items.Clear();
var items = await DataStoreRecetaDetalle.GetItemsAsync(true);
foreach (var item in items)
{
if (item.Receta == Title)
{
Items.Add(item);
}
}
}
catch (Exception ex)
{
Debug.WriteLine(ex);
MessagingCenter.Send(new MessagingCenterAlert
{
Title = "Error",
Message = "Unable to load items.",
Cancel = "OK"
}, "message");
}
finally
{
IsBusy = false;
}
}
