// When the user selects a shipping rate, set that rate on the checkout and proceed to the discount activity. private async Task OnShippingRateSelectedAsync(ShippingRate shippingRate) { ShowLoadingDialog(Resource.String.syncing_data); try { await SampleApplication.SetShippingRateAsync(shippingRate); DismissLoadingDialog(); StartActivity(new Intent(this, typeof(DiscountActivity))); } catch (ShopifyException ex) { OnError(ex.Error); } }