title: How to change the QueryString on post back?
body: <p>I would like to perform a post back and have several values added to my query string.  I had been using a redirect to the same URL and simply adding query string parameters but when I do this my View State is cleared, which I need to avoid.</p>
  
  <p>Because of the technology I am working with (SharePoint) I have to pass my parameters using the query string.  </p>
  
  <p>I did some looking around, but haven't found an clear answer on how to accomplish a post back with different query string parameters.  Is there any way to do this?</p>