HttpContext.Current.Session[“UserID”] not null even Session[“UserID”] null after session timeout in asp.net

Question

i have set Session["UserID"] on page load. like

if(!IsPostBack) {
   Session["UserID"] = 1222;
}

I am using HttpContext.Current.Session["UserID"] to verify user session timeout or not.

My web config setting like this,

<sessionState mode="InProc" cookieless="false" timeout="20"/> 

After 20 minute Session["UserID"] object is null, but at same time, if i verify the HttpContext.Current.Session["UserID"] it show user id.

Please let me know how HttpContext.Current.Session["UserID"] is null after session timeout

Answer 1

The Session property of the System.Web.UI.Page and System.Web.UI.UserControl classes is a reference to HttpContext.Current.Session .

You refer to session["UserId"] (note lower-case 's') - but you don't say what this is referencing. Presumably it's defined in your own code, and isn't referencing HttpContext.Current.Session .

Answer 2

Please check you have set session value in custom controller base or derived class.

As an example if you check session value for session expired redirection at ActionFilterAttribute . please make sure your controller inherited calls have not existed session set methods.

because before calling to controller action method, controller constructor will be called.

I believe this will be helpful someone