async Task ExecuteLoadItemsCommand()
{
if (IsBusy)
{
return;
}
IsBusy = true;
try
{
Items.Clear();
var items = await DataStore2.GetItemsAsync(true);
foreach (var item in items)
{
Items.Add(item);
}
}
catch (Exception ex)
{
Debug.WriteLine(ex);
}
finally
{
IsBusy = false;
}
}
public OfferedCitiesViewModel()
{
Title = "Available cities";
selectedCities = new List <SelectableItem <City> >();
Items = new ObservableCollection <SelectableItem <City> >();
LoadItemsCommand = new Command(async() => await ExecuteLoadItemsCommand());
MessagingCenter.Subscribe <AddNewCityPage, SelectableItem <City> >(this, "AddItem", async(obj, item) =>
{
var _item = item as SelectableItem <City>;
Items.Add(_item);
await DataStore2.AddItemAsync(_item);
});
}