Notifcation History Response With No Invalid Order Numbers

What steps will reproduce the problem?
1. Create a Notification History Request with a valid order number
2. Send the request and get the response
3. Check for invalid order numbers by calling 
GCheckout.OrderProcessing.NotificationHistoryResponse.InvalidOrderNumbers

What is the expected output? What do you see instead?
I expected to get a list of invalid order numbers or an empty collection, 
but instead an ArgumentNullException exception is thrown.

What version of the product are you using? On what operating system?
Revision 220 (head at the moment) from SVN.

Please provide any additional information below.
Suggested patch:
Index: NotificationHistoryResponse.cs
===================================================================
--- NotificationHistoryResponse.cs  (revision 220)
+++ NotificationHistoryResponse.cs  (working copy)
@@ -63,7 +63,10 @@
       get {
         if (_invalidOrderNumbers == null) {
           _invalidOrderNumbers = new List<string>();
-          _invalidOrderNumbers.AddRange(_response.invalidordernumbers);
+          if (_response.invalidordernumbers != null)
+          {
+            _invalidOrderNumbers.AddRange(_response.invalidordernumbers);
+          }
         }
         return _invalidOrderNumbers;
       }

Original issue reported on code.google.com by Trevor.D...@gmail.com on 3 Nov 2009 at 12:37

carviaso / google-checkout-dotnet-sample-code

Notifcation History Response With No Invalid Order Numbers #43