Detect ASP.NET Session Timeout - ASP.NET_SessionId method not working -


i'm trying detect asp.net session timeout redirect user timeout page; i've checked various methods, of them similar to

http://aspalliance.com/520_detecting_aspnet_session_timeouts.2

(if session.isnewsession , asp.net_sessionid cookie exists, timeout)

the problem "asp.net_sessionid" cookie present me, if started debugging, giving me false timeout flag when starting web site first time.

update: testing, i've created empty asp.net web application following codes:

basepage.cs

using system; using system.web.ui;  namespace testapp.classes {     public class basepage : page     {         protected override void oninit(eventargs e)         {             base.oninit(e);              if (context.session != null)             {                 if (session.isnewsession)                 {                     string szcookieheader = request.headers["cookie"];                     if ((null != szcookieheader) && (szcookieheader.indexof("asp.net_sessionid") >= 0))                     {                         response.redirect("sessiontimeout.htm");                     }                 }             }         }     } }

global.asax

using system;  namespace testapp {     public class global : system.web.httpapplication     {          protected void application_start(object sender, eventargs e)         {          }          protected void session_start(object sender, eventargs e)         {             var = "";         }          protected void application_beginrequest(object sender, eventargs e)         {          }          protected void application_authenticaterequest(object sender, eventargs e)         {          }          protected void application_error(object sender, eventargs e)         {          }          protected void session_end(object sender, eventargs e)         {             var b = "";         }          protected void application_end(object sender, eventargs e)         {          }     } }

webform1.aspx

using system; using testapp.classes;  namespace testapp {     public partial class webform1 : basepage     {         protected void page_load(object sender, eventargs e)         {          }     } }

web.config

<?xml version="1.0"?> <configuration>     <system.web>       <compilation debug="true" targetframework="4.5" />       <httpruntime targetframework="4.5" />       <sessionstate timeout="1"></sessionstate>     </system.web>  </configuration>

then hit f5, , redirected sessiontimeout.htm. why?

you don't have use cookie when develop website. there other ways store data, e.g. can store data specific user in database

note "cookieless = false" attrubute of sessionstate element in web.config means sessionid of current session saved in client machine cookie

<sessionstate cookieless="true" />

default settings asp.net session state defined in machine.config file , can overridden in web.config file in application's root folder. ensuring above line appears in root web.config file, enable cookieless sessions

refer http://msdn.microsoft.com/en-us/library/aa479314.aspx

so check session.isnewsession , disable cookie


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