fix bugs

Author: tcboy

ams-dotnet/src/com/alipay/ams/api/request/EntryCodePaymentRequest.cs

@@ -21,7 +21,6 @@ public EntryCodePaymentRequest()
         public override void validate()
         {
             Asserts.NotNull(PaymentRequestId, "paymentRequestId required.");
-            Asserts.NotNull(PaymentNotifyUrl, "paymentNotifyUrl required.");
             Asserts.NotNull(PaymentAmount, "paymentAmount required.");
             Asserts.NotNull(Order, "order required.");
             Asserts.NotNull(Order.Merchant, "order.merchant required.");

ams-dotnet/src/com/alipay/ams/api/request/OrderCodePaymentRequest.cs

@@ -21,7 +21,6 @@ public OrderCodePaymentRequest()
         public override void validate()
         {
             Asserts.NotNull(PaymentRequestId, "paymentRequestId required.");
-            Asserts.NotNull(PaymentNotifyUrl, "paymentNotifyUrl required.");
             Asserts.NotNull(PaymentAmount, "paymentAmount required.");
             Asserts.NotNull(Order, "order required.");
             Asserts.NotNull(Order.Merchant, "order.merchant required.");

ams-dotnet/src/example/tests/OrderCodeTest.cs

@@ -24,6 +24,7 @@ private static string testOrderCode(DefaultAlipayClient client, string paymentRe
 
             long amountInCents = 1000;
             request.PaymentAmount = new Amount(currency, amountInCents);
+            request.PaymentNotifyUrl = "https://www.gaga.com/notify";
             Order order = new Order();
             order.OrderAmount = new Amount(currency, amountInCents);
             order.OrderDescription = "New White Lace Sleeveless";