loading the same page with and without session variables
<p>I have an aspx page. This page is used for both create and edit. 
While editing, I set a session variable and load the same page.
While creating , user has to click on menu option and it get redirected to "CreatePage.aspx".
While editing, it will be redirected on click of a column in a grid . this time the response.redirect happens to the same page with Session["Id"] set to some value. Now my question is how and when do I set the session to null?
This should work for Create and Edit using the same page. Any help will be greatly appreciated.</p>
