MVC开发程序中，session的用法

 public class UserBF
    {
        private masterDataContext _Context = new masterDataContext();
        public bool Login(string users,string pass)
        {
            var query = _Context.denglu.Where(p => p.users == users && p.pass == pass);
            return query.Count() > 0;
        }

    }



 public ActionResult Checkuidpwd(string uid,string pwd)
        {
            bool isok = new UserBF().Login(uid,pwd);

            if (isok == true)
            {
                //保存状态
                //把输入的用户名存在Session里
                Session["user"] = uid;
                //跳转界面
                return RedirectToAction("Index","Home");
            }
            else
            {
                return RedirectToAction("Index");
            }

        }


 public ActionResult Index()
        {
            //如果session里没有值，就证明没有登录，返回登录页面。不能跳过登录页面
            if (Session==null)
            {
                return RedirectToAction("index","login");
            }
            return View();
        }




  <div>欢迎您：@Session["user"].ToString()</div>