session object reinstantiated every time page is refreshed

cyberbless

I'm creating a basic page like the on below. Problem is evertime I
refresh the page or spawn a "child window" out of the pre-existing
browser the Session object is recreated with a new sessionID. Am I
doing something wrong? is it possible it could be the hosting company?
Any suggestion would help.

<%@ Page Language="C#" AutoEventWireup="true"
CodeFile="Default.aspx.cs" Inherits="test_Default" Culture="auto"
meta:resourcekey="PageResource1" UICulture="auto" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<% Response.Write(HttpContext.Current.Session.Session ID); %>
</div>
</form>
</body>
</html>

May 10 '06 #1

Subscribe Post Reply

2168

Andy

Sessions usually rely on cookies; check your browser settings first.

If those look ok, then it could be the hosting company turns off
session by default, or your web.config is turning it off.

May 10 '06 #2

Hans Kesting

> I'm creating a basic page like the on below. Problem is evertime I

refresh the page or spawn a "child window" out of the pre-existing
browser the Session object is recreated with a new sessionID. Am I
doing something wrong? is it possible it could be the hosting company?
Any suggestion would help.

<%@ Page Language="C#" AutoEventWireup="true"
CodeFile="Default.aspx.cs" Inherits="test_Default" Culture="auto"
meta:resourcekey="PageResource1" UICulture="auto" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<% Response.Write(HttpContext.Current.Session.Session ID); %>
</div>
</form>
</body>
</html>

If this is the only page you use, there might be something else going
on:

The session is not stored on the server if there *is* nothing to be
stored! Try this page again, but also write something *to* the session.
Hans Kesting

May 11 '06 #3

Andy

Weird, it does seem to be the case that if nothings in the session, a
new session is created everytime.

That's not quite what I'd expect, since I think in Net 1.1 the session
lasted as long as the browser was open.

May 11 '06 #4

Alvin Bruney

That's actually by design. For a new session id to be generated, the session
dictionary must be stained and at least one request must have completed
successfully. See
http://support.microsoft.com/default...b;en-us;555082

--

________________________
Warm regards,
Alvin Bruney [MVP ASP.NET]

[Shameless Author plug]
Professional VSTO.NET - Wrox/Wiley
The O.W.C. Black Book with .NET
www.lulu.com/owc, Amazon
Blog: http://www.msmvps.com/blogs/alvin
-------------------------------------------------------

"Andy" <aj*****@alum.rit.edu> wrote in message
news:11**********************@q12g2000cwa.googlegr oups.com...

Weird, it does seem to be the case that if nothings in the session, a
new session is created everytime.

That's not quite what I'd expect, since I think in Net 1.1 the session
lasted as long as the browser was open.

May 11 '06 #5

Andy

Actually that explains why Session end events don't sometimes seem to
fire. It doesn't explain why you have to put something into the
session for it to persist in a single browser session.

Nor does it make sense to require anything in the Session object; its
perfectly feasble to write a website which autentiates a user and
communicates with the database without ever storing anything in the
session object. Its trivially easy to do this.. you keep track of what
the user is doing via form or querystring parameters. I don't think
either of these require the use of Session at all.

Could you post a link explaining when sessions will stick around? I'm
almost certain that you'd keep your session cookie as long as the
browser was open, even if you were just browsing static pages. At
least thats the behavior I've known in ASP and ASP.net 1.1. Haven't
build any 2.0 pages yet.

May 11 '06 #6

Hans Kesting

> Weird, it does seem to be the case that if nothings in the session, a

new session is created everytime.

That's not quite what I'd expect, since I think in Net 1.1 the session
lasted as long as the browser was open.

No, the session will not "last as long as the browser is open". How
should the server know that the browser is closed?
Instead the session ends when explicitly requested, of (default)
20 minutes after the last request. Whether the browser is open or not.

If nothing was stored in the session, then you will only get a new
session-ID, not a complete session.

Hans Kesting

May 12 '06 #7

Andy

> No, the session will not "last as long as the browser is open". How

should the server know that the browser is closed?
What IIS used to do in the past was drop a session cookie on the users
machine. This session cookie is a special type of cookie which
browsers know to remove once the window is closed. Thats what used to
happen in the past.
Instead the session ends when explicitly requested, of (default)
20 minutes after the last request. Whether the browser is open or not.
When the browser was closed, it would 'forget' the cookie. On the
server the session would exist until it timed out. Re-opening the
browser and sending a request to the site could cause another session
cookie to be dropped (because IIS didn't detect the existance of one).
If nothing was stored in the session, then you will only get a new
session-ID, not a complete session.

I'm pretty sure this is new behavior in .Net 2.0, as I don't think it
was the case previously. I haven't been doing as much web work lately
(mostly WinForms, but I am currently building a site), but it wasn't
long ago that web was the only kind of app I was building; I spent 7
years doing web work exclusively.

Andy

May 12 '06 #8

cyberbless

Andy was coorect. The Session does need to be stained; assigned with a
variasble in order for the Session Object to persist. Ofcourse IMO
thats straying away from the orignal purpose of a the Session Object.

May 16 '06 #9

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