AdventureWorks.UILogic.ViewModels.ShoppingCartPageViewModel.Remove C# (CSharp) Метод

        private async Task Remove(ShoppingCartItemViewModel item)
        {
            if (item == null)
            {
                return;
            }

            string errorMessage = string.Empty;
            try
            {
                // Hide the AppBar
                IsBottomAppBarOpened = false;

                await _shoppingCartRepository.RemoveShoppingCartItemAsync(item.Id);
                ShoppingCartItemViewModels.Remove(item);

                CheckoutCommand.RaiseCanExecuteChanged();
                OnPropertyChanged("FullPrice");
                OnPropertyChanged("TotalDiscount");
                OnPropertyChanged("TotalPrice");
            }
            catch (Exception ex)
            {
                errorMessage = string.Format(CultureInfo.CurrentCulture, _resourceLoader.GetString("GeneralServiceErrorMessage"), Environment.NewLine, ex.Message);
            }

            if (!string.IsNullOrWhiteSpace(errorMessage))
            {
                await _alertMessageService.ShowAsync(errorMessage, _resourceLoader.GetString("ErrorServiceUnreachable"));
            }
        }