session timeout in asp.net

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i have one doubt I am storing username in session variable if session timesout it should automatically return to login page I am not getting please suggest me how to write code i kept sliding expiration= false. but it is not working

Posted 27-Dec-12 3:57am

sreekanthv12

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2 solutions

Solution 2

As you told you stored username in Session variable like

C#

Session["username"]="somevalue";

now each page_load() where you want only authorized person go there, you can check its value as

C#

if(Session["username"]==null)
{
Response.Redirect("login.aspx");
}
else
{
// you can acess its value, I think you need.
string uname = Session["username"].ToString();
}

..IF THIS SOLUTION IS NOT GOOD ENOUGH PLEASE GIVE REASON WHY..??
...IF YOU DOWN VOTE THEN GIVE ME REASON ALSO...

Thanks
Developers Blog[^]
Hemant Singh Rautela

Posted 27-Dec-12 7:20am

Hemant Singh Rautela

Updated 28-Dec-12 0:54am

v4

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Oleksandr Kulchytskyi · Accepted Answer · 2012-12-27T04:10:00

So , in your web config make next changes :

XML

<system.web>
<compilation debug="true" />
<authentication mode="Forms" />
<sessionstate mode="InProc" cookieless="false" timeout="1">
</sessionstate>
</system.web>

Add Global.asax class file in root of your application or website.
This method works only if Global.asax is present in application.

you can also put this code in in a class and inherit all pages of application from this class acting as base class for all pages to check for session timeout.

C#

protected void Page_Init(object sender, EventArgs e)
    {
        if (Context.Session != null)
        {
            if (Session.IsNewSession)
            {
                HttpCookie newSessionIdCookie = Request.Cookies["ASP.NET_SessionId"];
                if (newSessionIdCookie != null)
                {
                    string newSessionIdCookieValue = newSessionIdCookie.Value;
                    if (newSessionIdCookieValue != string.Empty)
                    {
                        // This means Session was timed Out and New Session was started
                        Response.Redirect("Login.aspx");
                    }
                }
            }
        }
    }