My solution would be simply to pass the parameter through Session object.
But you can:
- use one of the persistant objects (session, viewbag, etc)
- use javascript / jQuery to add src attribute to placeholder iframe, when your second page loads just add src to iframe
-
use literal control[
^]
- change the design, instead of iframe, inject the content of the page to div in the same page (this is finicky and I wouldn't do it this way without very good reason)