Session transfer between window and modal dialog

Question

I have a parent window from which i open a modal dialog on button click. In WinXP with IE8 it works just fine, but in Win7 with IE8, upon opening the modal dialog it brings me to the login screen. If i enter my credentials, close the dialog and open it again, it works.

The explanation i figured out is that the session isn't transfered between parent and child. The modal is opened with javascript window.open function.

I don't want to store the credentials in a cookie and then read it in my modal because it's a security no-no. Is there an explanation why this is happening in Win7 and not in XP and is there a resolution for this issue?

Answer 1

Session resides on the server, so as long as the browser sees the modal dialog as the same site (server etc) it will identify itself to the server, which will then pull up the session details. Perhaps you have cookies disabled somewhere.

Why don't you print out the session value on both screens? Is it null the first time you open the modal dialog?

My guess is this is something do with an if(IsPostPostBack) in the modal dialog. Other than that if you can post some code i'll certainly take a look.