Using Cookie in Asp.Net Mvc 4

Question

I have web application in Asp.Net MVC4 and I want to use cookie for user's login and logout. So my actions as follows:

Login Action

    [HttpPost]     public ActionResult Login(string username, string pass)     {         if (ModelState.IsValid)         {             var newUser = _userRepository.GetUserByNameAndPassword(username, pass);             if (newUser != null)             {                 var json = JsonConvert.SerializeObject(newUser);                  var userCookie = new HttpCookie("user", json);                 userCookie.Expires.AddDays(365);                 HttpContext.Response.Cookies.Add(userCookie);                  return RedirectToActionPermanent("Index");             }         }         return View("UserLog");     } 

LogOut Action

    public ActionResult UserOut()     {         if (Request.Cookies["user"] != null)         {             var user = new HttpCookie("user")                 {                     Expires = DateTime.Now.AddDays(-1),                     Value = null                 };             Response.Cookies.Add(user);         }         return RedirectToActionPermanent("UserLog");     } 

And I use this cookie in _Loyout as follow:

@using EShop.Core @using Newtonsoft.Json @{    var userInCookie = Request.Cookies["user"]; } ...   @if (userInCookie != null && userInCookie.Value)   {         <li><a href="#">Salam</a></li>         <li><a href="@Url.Action("UserOut", "Home")">Cıxış</a></li>   }   else   {         <li><a href="@Url.Action("UserLog", "Home")">Giriş</a></li>   } 

But When I click *UserOut* action this action happen first time, but then it doesn't work. I put breakpoint for looking process but it get UserLog action doesn't UserOut. My question is that where I use wrong way of cookie? What is a best way using cookie in Asp.Net Mvc4 for this scenario ?

Answer 1

Try using Response.SetCookie(), because Response.Cookies.Add() can cause multiple cookies to be added, whereas SetCookie will update an existing cookie.

Answer 2

We are using Response.SetCookie() for update the old one cookies and Response.Cookies.Add() are use to add the new cookies. Here below code CompanyId is update in old cookie[OldCookieName].

HttpCookie cookie = Request.Cookies["OldCookieName"];//Get the existing cookie by cookie name. cookie.Values["CompanyID"] = Convert.ToString(CompanyId); Response.SetCookie(cookie); //SetCookie() is used for update the cookie. Response.Cookies.Add(cookie); //The Cookie.Add() used for Add the cookie.