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