async Task ExecuteLoadItemsCommand()
{
if (IsBusy)
{
return;
}
IsBusy = true;
try
{
CashDispenseResults.Clear();
var items = await CashDispenseResultDataStore.GetItemsAsync(true);
CashDispenseResults.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 CashDispenseResultsViewModel()
{
Title = "Transactions";
CashDispenseResults = new ObservableRangeCollection <CashDispenseResult>();
LoadItemsCommand = new Command(async() => await ExecuteLoadItemsCommand());
MessagingCenter.Subscribe <NewCashDispenseResultPage, CashDispenseResultNewViewModel>(this, "AddItem", async(obj, item) =>
{
var _item = item as CashDispenseResultNewViewModel;
await CashDispenseResultDataStore.AddItemAsync(_item.NewCashDispenseResult);
await ExecuteLoadItemsCommand();
});
}
