private async Task UpdateShoppingCartInfoAsync()
{
string errorMessage = string.Empty;
try
{
_shoppingCart = await _shoppingCartRepository.GetShoppingCartAsync();
if (_shoppingCart != null && _shoppingCart.ShoppingCartItems != null)
{
ShoppingCartItemViewModels = new ObservableCollection <ShoppingCartItemViewModel>();
foreach (var item in _shoppingCart.ShoppingCartItems)
{
var shoppingCartItemViewModel = new ShoppingCartItemViewModel(item, _resourceLoader);
shoppingCartItemViewModel.PropertyChanged += ShoppingCartItemViewModel_PropertyChanged;
ShoppingCartItemViewModels.Add(shoppingCartItemViewModel);
}
CheckoutCommand.RaiseCanExecuteChanged();
RaisePropertyChanged(nameof(FullPrice));
RaisePropertyChanged(nameof(TotalDiscount));
RaisePropertyChanged(nameof(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"));
}
}
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();
RaisePropertyChanged(nameof(FullPrice));
RaisePropertyChanged(nameof(TotalDiscount));
RaisePropertyChanged(nameof(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"));
}
}
private void NotifyCommands()
{
CancelCommand.RaiseCanExecuteChanged();
CheckoutCommand.RaiseCanExecuteChanged();
PrintCommand.RaiseCanExecuteChanged();
PreviewCommand.RaiseCanExecuteChanged();
SearchProductCommand.RaiseCanExecuteChanged();
}