public ActionResult Index(user usr)

        {
            sagarbooksEntities1 dbObject = new sagarbooksEntities1();
            var checkUser = dbObject.users.Where(l => l.u_name.Equals(usr.u_name) && l.u_password.Equals(usr.u_password)).FirstOrDefault();

            if (checkUser != null)
            {
                var loggeduser = dbObject.users.Where(l => l.u_name.Equals(usr.u_name)).FirstOrDefault();
                Session["u_name"] = loggeduser.u_name.ToString();
                Session["u_id"]   = loggeduser.u_id.ToString();
                Session["u_type"] = loggeduser.u_type.ToString();

                return(RedirectToAction("Dashboard"));
            }
            else
            {
                ViewBag.msg = "invalid username or password";
            }


            return(View());
        }