asp.net - Cookies expiring after each session -

my web.config have set 10 mint time out

<sessionstate mode="inproc" timeout="10" /> 

and filter follows

public override void onactionexecuting(actionexecutingcontext filtercontext)     {         httpsessionstatebase session = filtercontext.httpcontext.session;          httpcookie userinfocookie =             httpcontext.current.response.cookies[system.configuration.configurationmanager.appsettings[convert.tostring(cookiefield.cookiename)]];         string userexpire = string.empty;         userexpire = new usercontrollerhelper().fetchdatafromcookie(cookiefield.userroleid.tostring());         if (userexpire == null)          {              filtercontext.result = new redirecttorouteresult(new routevaluedictionary { { "controller", "home" }, { "action", "index" }, { "area", "" } });         }     } 

and methods have filter [sessionexpire] works fine 1 session next click on same action method cookies clearing automatically.

in global.asax have following code

void session_start(object sender, eventargs e) {     session.timeout = 10;             }  void session_end(object sender, eventargs e) { } 

i tried different time outs still no luck.

i saving cookies following code

//create cookie         string cookiename = system.configuration.configurationmanager.appsettings[convert.tostring(cookiefield.cookiename)];         httpcookie usercookie = new httpcookie(cookiename);         //add key-values in cookie         usercookie.values.add(convert.tostring(cookiefield.userid), encryptdata(convert.tostring(userregistrationmodel.id)));         usercookie.values.add(convert.tostring(cookiefield.userfirstname), encryptdata(convert.tostring(userregistrationmodel.firstname)));         usercookie.values.add(convert.tostring(cookiefield.userlastname), encryptdata(convert.tostring(userregistrationmodel.lastname)));         usercookie.values.add(convert.tostring(cookiefield.userlogin), encryptdata(convert.tostring(userregistrationmodel.login)));         usercookie.values.add(convert.tostring(cookiefield.userpassword), convert.tostring(userregistrationmodel.loginpassword));         usercookie.values.add(convert.tostring(cookiefield.userroleid), encryptdata(convert.tostring(userregistrationmodel.roleid)));         usercookie.values.add(convert.tostring(cookiefield.userconfirmed), convert.tostring(userregistrationmodel.isconfirmedbyadmin));         //set cookie expiry date-time, if required.         usercookie.expires = datetime.now.addminutes(10);         //writing cookie client.         httpcontext.current.response.cookies.add(usercookie); 

but after moment "expires" automatically turning 0. there mistake in saving expiry date time in code?

i updated filter , resolved :)

public override void onactionexecuting(actionexecutingcontext filtercontext) {     httpsessionstatebase session = filtercontext.httpcontext.session;     string userexpire = string.empty;     userexpire = new usercontrollerhelper().fetchdatafromcookie(cookiefield.userroleid.tostring());     if (userexpire == null)      {          filtercontext.result = new redirecttorouteresult(new routevaluedictionary { { "controller", "home" }, { "action", "index" }, { "area", "" } });     } }