protected override async Task Add(CashQRCodeViewModel item)
{
var cashQRCodeVM = item.PartialClone();
List.Add(cashQRCodeVM);
await AsyncDatabase.AddItemAsync(cashQRCodeVM.CashQRCode);
}
protected override async Task Add(CheckViewModel item)
{
item.Check.Type = CheckType;
List.Add(item);
item.Check.Serialize();
await AsyncDatabase.AddItemAsync(item.Check);
}