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