C# (CSharp) OffAmazonPaymentsServiceAutomaticPaymentsSimpleCheckout.AuthorizeOnBillingAgreement - 2 examples found. These are the top rated real world C# (CSharp) examples of OffAmazonPaymentsServiceAutomaticPaymentsSimpleCheckout.AuthorizeOnBillingAgreement extracted from open source projects. You can rate examples to help us improve the quality of examples.