Infopath 2010 Web Form will not run code behind or load External Lists after FormEvents_Loading added

Question

Building a form to edit and create data in external list. The business rules do not allow for creation in an external list bound InfoPath form. (We are cascade filtering multiple drop down lists from external content type).
All works to write code behind to push new record or update record in external list. The big issue came when trying to add FormEvents_loading event to the code to capture URL parameter. I want to be able to pass the Primary Key of the record to
edit, load the data into the form and allow editing and submit. I have tested by manually entering the data and the form works. The form will no longer load data from external lists for the drop downs and shows an error stating "The custom code
in the form cannot be run. This functionality may be deactivated
on the server. For more information, contact the server farm administrator."
I think this is related to moving from the normal forms services into sandboxed code service. Is there a way to access external content types and still have form loading event capture URL parameters?
The code to capture the URL is listed below:
XPathNavigator myNav1 = this.MainDataSource.CreateNavigator();
string InputF1 = string.Empty;
if (e.InputParameters.ContainsKey("AuthPK"))
InputF1 = e.InputParameters["AuthPK"];
myNav1.SelectSingleNode("/my:myFields/my:CodeData/my:DatabaseUpdateStatus", this.NamespaceManager).SetValue(InputF1);
myNav1.SelectSingleNode("/my:myFields/my:CodeData/my:pk_tblOFCAuthorizations", this.NamespaceManager).SetValue(InputF1);
else
myNav1.SelectSingleNode("/my:myFields/my:CodeData/my:pk_tblOFCAuthorizations", this.NamespaceManager).SetValue("0");
Is there another way to pass parameters to the form? I tried using web part connection, but that does not work with code behind form at all, which would stop me from updating external list.

Answer 1

Hi,
As this question is more related to InfoPath development, I suggest you post it to Visual Studio Tools for Office (VSTO) Forum, more experts will assist you with this issue.
Visual Studio Tools for Office (VSTO) Forum:
http://social.msdn.microsoft.com/Forums/en-US/home?forum=vsto
Best Regards,
Lisa Chen
Forum Support
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