In my page, Page.aspx, I have Response.Redirect("Plug.xyz") and that invokes a HttpHandler. 

In the HttpHandler, I need to access the controls on Page.aspx.  How do I do that?
 

Thanks 

You cant!  Response.Redirect sends a (i think) 303 down to the client, the browser then goes to the new url (your new handler.. with no access to the page it came from).  If you use Server.Transfer, then it does not do the round trip, and does the shift server side!  If your HTTP Handler is a page you can do:

PreviousPage.FindControl("... etc.

Hi samw

I agree to David.
It works if you use Server.Transfer() and HttpContext.Current.Items.

Thank you both... Server.Transfer() may work for me, however I will also need to set the source of an iframe to Page.xyz.

What I am trying to do is 1.) upload two files, 2,) run an update query.  I need to display status info during process.  I dont need to give byte-by-byte status during the file uploads, but during the update I need to display progress because it is very long.  Is using a httphandler the best way to do this?

Thanks