Hi

I've created a product search page which uses a multiview control inside an updatepanel.  I 've been told that i need back button functionality so i've tried to add history points. 

ScriptManager objScriptManager = ScriptManager.GetCurrent(Page);
                objScriptManager.EnableHistory = true;

I tried the above code but i just get a Null Reference exception.  Is anyone able to point em in the right direction?

Simon

Bump.

Surely someone knows how to do this?

i gave up in the end. I just looked at all the threads I created regarding this (on other sites) and none seem to have replies. I'm pretty sure you can do this though.