//Assuming at least one CreditCard PaymentMethod has been created using the Orders UI public Guid GetPaymentMethodID() { Guid creditCardPaymentMethodId = Guid.Empty; Boolean ccPmtMethodFound = false; //Get all PaymentMethods DataSet pmtMethods = orderCtx.GetPaymentMethods(); DataTableReader reader = pmtMethods.CreateDataReader(); IEnumerator readerEnum = reader.GetEnumerator(); while (readerEnum.MoveNext() && !ccPmtMethodFound) { DbDataRecord rec = (DbDataRecord)readerEnum.Current; switch (rec.GetInt32(rec.GetOrdinal("PaymentType"))) { case (int)PaymentMethodTypes.CreditCard: creditCardPaymentMethodId = rec.GetGuid(rec.GetOrdinal("PaymentMethodId")); ccPmtMethodFound = true; break; } } if (Guid.Empty == creditCardPaymentMethodId) { throw new ApplicationException("This demo requires at least one CreditCard type of PaymentMethod to be defined!"); } return(creditCardPaymentMethodId); }