What is the way to clear all Session Variables on first page load?

[KindMan]

Hello everyone,

how can i clear the session variables on page load (the first time)?

thanks for help!

[Tyssen]

Taken from here:

<%
Session.Contents.RemoveAll()
%> 

[KindMan]

OK.

I should be more specific. I have no problem clearing the session variables:
HttpContext.Current.Session.Clear()
System.Web.Security.FormsAuthentication.SignOut()
HttpContext.Current.User = Nothing
Response.Redirect("~/Login.aspx", True)



I don't know how to do it onPageLoad event with isPostBack property.
Does ASP has this event?
I need to do the Session Clearance just for the FIRST load of the page..

How can i do it in ASP?

thanks!