Infopath: Code Behind Issue Event ID:5337

Hi,

When I had Code-behind for business logic in Infopath forms like:

XPathNavigator nav = MainDataSource.CreateNavigator();

nav.SelectSingleNode("//my:CurrentUser", NamespaceManager).SetValue("SOME Values");

the following Warning message was shown:

Warning Message:

Object reference not set to an instance of an object.

System.NullReferenceException: Object reference not set to an instance of an object.
at ItemCreation.FormCode.FormEvents_Loading(Object sender, LoadingEventArgs e)
at Microsoft.Office.InfoPath.Server.SolutionLifetime.FormEventsHost.<>c__DisplayClass6.<>c__DisplayClassa.b__3()
at Microsoft.Office.InfoPath.Server.Util.DocumentReliability.InvokeBusinessLogic(Thunk thunk)
at Microsoft.Office.InfoPath.Server.SolutionLifetime.FormEventsHost.<>c__DisplayClass6.b__2(Object sender, LoadingEventArgs e)
at Microsoft.Office.InfoPath.Server.SolutionLifetime.FormEventsHost.<>c__DisplayClass34.b__30()
at Microsoft.Office.InfoPath.Server.DocumentLifetime.OMExceptionManager.CallFormCodeWithExceptionHandling(UserMessages userMessages, OMCall d)

An entry has been added to the Windows event log of the server.

Log ID:5337

Seems the Error use to come when ever we try to SET VALUE.

instead of directly setting the value. you can us like

Solution:

You can have a public method

public void writeToNode(XPathNavigator xpathNav, string xpath, string value)

{

xpathNav.SelectSingleNode(xpath, this.NamespaceManager).SetValue(value);

}

And use the following code to set value:

writeToNode(nav,"//my:CurrentUser","Some Values");

Resource: http://www.dennispoint.com/Lists/Posts/Post.aspx?ID=27

Hope IT Helpz
Fauzi