problem in session with master page when upload to server

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hi,
i m developing web application in asp.net with c#.
in which i m using master page with login and one order form.

login and order form is connected with master page.

i m creating session in master page. and redirect this session to booking form.

i m using web.config file in which session timout=20;

after successful login, i filled the booking form(which takes at least 2 minutes.)
when i clicked submit button. i m automatically redirect on login page.(because i code in master page that is as follows):

C#

if (Session["utype"] == null)
        {
           Response.Redirect("MainLogin.aspx");
       }
      if (Session["utype"].ToString() == "Admin")
      {
           AdminDiv.Visible = true;
           UserDiv.Visible = false;
         lblusername.Visible = true;
           lblusername.Text = Session["utype"].ToString();
      }
       if (Session["utype"].ToString() == "User")
       {
         AdminDiv.Visible = false;
          UserDiv.Visible = true;
         lblusername.Visible = true;
           lblusername.Text = Session["utype"].ToString();
      }

i can not understand that why it is automatically signed out.

i m also using <pages enableViewStateMac="false" />

in web.config.

pls help me .

thanks in advance.

Posted 5-Apr-11 23:54pm

jeet786

Updated 5-Apr-11 23:56pm

Wild-Programmer

v2

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Ankur^\m/ 6-Apr-11 6:08am

Before redirecting the user to log-in page, assign Session["utype"] a proper value.

Rakesh From Patna 6-Apr-11 8:48am

No, in login page you type the user id and password. if user id and password is correct then you assign the Session["utype"] then redirect the order form. you logout in order form button button then you then you type in button click event Session["utype"]="" or null; and redirect to login page.

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Rakesh From Patna · Answer 1 · 2011-04-06T00:03:00

you remove the session timeout=20
in login page, you set the Session["utype"]=//you add type this code is add above of when you write response.redirect(orderform.aspx).

you also add the global.asax file and write smoething

void Session_Start(object sender, EventArgs e) 
    {
        // Code that runs when a new session is started
        Session["utype"] = "";
        
    }

I hope work.