CMSPaymentGatewayProvider ProcessPayment Method Kentico 8.1 API Reference
Process payment - you need to override this method to process payment by your custom payment processor.

Namespace: CMS.EcommerceProvider
Assembly: CMS.EcommerceProvider (in CMS.EcommerceProvider.dll) Version: 8.0.0.0 (8.1.5347.20411)
See Also
CMSPaymentGatewayProvider Class
CMSPaymentGatewayProvider Members
CMS.EcommerceProvider Namespace