<p>I have a text string value that I'd like to persist from one web page to another without using query strings or the session/view states.  I've been trying to get the ASP http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.hiddenfield.aspx">HiddenField control to pass information from one web form to a <i>different</i> form.<br><br>
All the hiddenfield control examples that I've seen is to preserve round trips from the client to the server for the same form.<br><br>
Is there way for a form to access the ASP controls (and their values) from the previously-rendered form?  Or is the initial form simply disposed of in memory by the time the second form executes it's <i>OnLoad</i> method?</p>

I would presume that the Response.Redirect() sends a Location: HTTP header to do a redirect.
As HTTP is stateless, I'd also presume that these variables are inaccessible.
There are however, solutions.
Print a form with hidden fields, and use javascript to submit it
Redirect in the code internally (load up the thing it needs to get to manually)
Store the data in some temporary database table somewhere, and pass along a unique ID
However, from my experience, I can't understand why you might need to do this (other than re-submitting a form after a user authentication - which hopefully you should be able to use method 2 for