How to clear the Session

Question

0.00/5 (No votes)

See more:

In my project I have 4 Sessions username,finyear,company,branch

when select company form is loading, I want to clear the all the sessions except username. How to do it?

I am using following in page_load for select company form, but the errror display
'object reference is not set to an instance of an object'

Session.Remove("name")
Session.Contents.Remove("name")
Session.Abondon()
Session.Clear()

Please anybody help me

Thank you

Posted 9-Jul-12 22:02pm

devausha

Add a Solution

4 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Manas Bhardwaj · Accepted Answer · 2012-07-09T22:13:00

Solution 2

like this:

C#

foreach (string key in Session.Keys)
{
    if("username" != Session[key])
    {
        Session.Remove(Session[key]);
    }
}

Posted 9-Jul-12 22:13pm

Manas Bhardwaj

Comments

Rahul Rajat Singh 10-Jul-12 4:28am

good answer. +5.

Manas Bhardwaj 10-Jul-12 4:35am

thx!

devausha 10-Jul-12 5:49am

I try this, But the Error displays 'Session has some invalid arguments'

pradiprenushe 10-Jul-12 6:29am

which line actually getting this error? I think this will solve
change this in above code
if("username" != Convert.Tostring( Session[key]))

StianSandberg · Accepted Answer · 2012-07-09T22:09:00

Solution 1

C#

Session["finyear"] = null;
Session["company"] = null;
Session["branch"] = null;

Posted 9-Jul-12 22:09pm

StianSandberg

Updated 9-Jul-12 22:29pm

v2

rizwan muhammed khan gouri · Accepted Answer · 2012-07-09T23:44:00

Solution 3

Quote:
you can use
Session["finyear"] = null;
Session["company"] = null;
Session["branch"] = null;

Posted 9-Jul-12 23:44pm

rizwan muhammed khan gouri

Comments

devausha 10-Jul-12 5:47am

I have already try this. But the Error is displayed "Object Reference is not set to an instance of an object"

Where we can give this code? within postback

Rohit Sharma706 · Accepted Answer · 2012-07-09T23:47:00

if you use master page then write this in page load

C#

protected void Page_Load(object sender, EventArgs e)
   {
       Response.Cache.SetExpires(DateTime.UtcNow.AddMinutes(-1));
       Response.Cache.SetCacheability(HttpCacheability.NoCache);
       Response.Cache.SetNoStore();
       if (Session["SessionId"] == null)
       {
           Response.Redirect("login.aspx");
       }


   }

///
send some SessionId throw login.aspx