Web Forms :: Session.sessionid Returns Different Value With Each Postback?

Sep 28, 2010

I'm a bit stumped by this one. Have a VS 2008 website running on Windows 7 using the VS web server. One of the pages transfers to another page (page2). On page2, each time I cause a postback by clicking a button, I get a different session.sessionid. I was under the impression sessionid was constant throughout the session, i.e. until the browser is closed or the session expires (~20 minutes). Is this just a VS web server quirk?

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Web Forms :: SessionID Changing On Each PostBack

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working on .net 2.0 using (vb)

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Session.SessionID Changes Between Requests?

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...
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SessionID Is Still The Same After Session.Abandon Call

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[Code]....

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Security :: User.Identity.IsAuthenticated Returns True But Session Has Expired

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I have a page where, when the user has successfully logged in, I store some values in the session.

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Web Forms :: Session Timeout Counter Not Working After PostBack

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When using modalpupextender ..after post back the ModalpopupExtender not working !!

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When I run page in all of my pages url  in addressbar show some unknown character like [URL] .....

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Sep 1, 2010

I have been using session variables in my asp.net application for passing the next property:

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I'm evaluating using Ajax in a new project and so I've developed a simple web page to test a few things, however even the simplest task seems to cause my session to be cleared. I am using VS2008 with .Net 3.5 SP1 and the page is in my existing solution which has several custom handlers and modules in the web.config. Below is the code I'm using, it's a simple test which puts a variable into the session then on the buttons postback tries to get the same variable, however it always fails as the session is blank.

The Default.aspx code snippet
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<asp:ScriptManager ID="ScriptManager1" runat="server" /> [code]....

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How To Handle A Postback After Session Expires On Site

Mar 18, 2011

I have a simple ASP.NET 4 site. I am using Forms Authentication. I have Session timeout set to 20 minutes. Also when the user authenticates I set the AuthenticationTicket to expire in 20 minutes. So normally everything works fine. If there is more than 20 minutes of inactivity and the user requests a page on the site they are redirected back to the Login page as I would expect.

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It seems like ASP.NET does not redirect back to Login on postback if the AuthenticationTicket and Session has expired. How can I handle this? I hope I don't have to write special code on each page.

ADDED: web.config code

<location path="ForgotLogin.aspx">
<system.web>
<authorization>
<allow users="*" />
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<system.web>
<authentication mode="Forms">
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<authorization>
<deny users="?" />
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</system.web>

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Session Variable Object Gets Deleted On Postback?

Feb 20, 2010

I have made something like the following code:

protected void Page_Load(object sender, EventArgs e)
{
Label1.Text = Session["loginid"].ToString();
}
protected void delete_click(object sender, EventArgs e)
{
delete("mail1",Session["loginid"]);
}
private int delete(string mailid, string user)
{
System.IO.Directory.Delete(Server.MapPath(@"~files" + user + @"" + mailid), true);
}

When i press the delete button, everything works fine and the folder gets deleted. but after that when page postbacks again then a NullRefrenceException is raised at Label1.Text = Session["loginid"].ToString(); why is it happening...?? When I am not using this Directory.Delete() method everything is working fine and session variables are not set to null. When I traced my application I found that After Directory.Delete() method Session variables were intact and I was able to use those session variables in the processing after Directory.Delete(). But as soon as the page postbacks all session variables are set to null. And this problem doesn't appear when i m not using this delete() method. The folder I m deleting is in my project's folder. I m running this website using Visual Studio.

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State Management :: Session Does Not Persist After Postback On Deployment

Nov 22, 2010

I ve been searching for this on various forums and came through a number of supposed solutions which didnt work for me.

My web form works perfectly for me when on development and after publishing on IIS but when I try to access remotely the session value is always null.

I do these things in the following order and when accessing remotely I always get the exception i throw when session is null.

I debugged it and my list is never null when reaching the assignment point.

[code]....

in webconfig I have the following tag which I saw as an answer in many forums

<sessionState mode="InProc" cookieless="true" timeout="200" />

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