// Add the gift card code to the checkout and update the order summary when the request completes.
private async Task AddGiftCardCodeAsync(string giftCardCode)
{
ShowLoadingDialog(Resource.String.syncing_data);
try
{
await SampleApplication.AddGiftCardAsync(giftCardCode);
UpdateOrderSummary();
}
catch (ShopifyException ex)
{
Toast.MakeText(this, GetString(Resource.String.gift_card_error, giftCardCode), ToastLength.Long).Show();
}
DismissLoadingDialog();
}