title: Passing Viewstate Data to Popup Window
body: <p>As far as I can tell it is impossible to access the ViewState of a parent page from a popup.</p>
  
  <p>What is the best approach to accomplish passing this information?</p>
  
  <p>I have considered the following:</p>
  
  <p>Using the Session but this may have memory implications on the server.</p>
  
  <p>Passing data in querystring but this may have security implications exposing data and access method in page</p>
  
  <p>Any other ideas or recommendations?</p>
  
  <p>Thanks in advance</p>