SessionState Variables lost

[Guest]

Hi everyone hopefully you can help me figure this one out.

I have a datalist that load its itemTemple (ITemplate) form an existing user
control. Now this usercontrol needs to access a sessionState variable when it
is loading. For some reason I get a System.NullReferenceException, It says
that there is no instance of the session object. Why would this be???

Thanks.

 

[Joe Fallon]

One reason is if you set EnableSessionState=False in the @Page declaration.

Another reason could be that you use InProc session state and the process
got recycyled.

 

[Rick Spiewak]

You may need to pass your user control a reference to the page, and let it
get at the session object that way.