我正在C＃ASP.NET MVC5中建立一个项目，当您输入错误的用户名和密码时，我试图给出一个错误。到目前为止，我尝试使用HandleError属性没有任何运气，现在我尝试使用Membership.ValidateUser。

public actionResult Login(User user)
        {
            using (CarsDBEntities db = new CarsDBEntities())
            {
                var usr = db.Users.Single(u => u.Email == user.Email && u.Password == user.Password);
                if (usr != null)
                {
                    Session["UserId"] = usr.UserId.ToString();
                    Session["Email"] = usr.Email.ToString();
                    Session["FirstName"] = usr.FirstName.ToString();
                    Session["LastName"] = usr.LastName.ToString();
                    return RedirectToaction("LoggedIn");
                }
                if (!Membership.ValidateUser(usr.Email,usr.Password))
                {
                    ModelState.AddmodelError(string.Empty,"The user name or password is incorrect");
                    return View(user);
                }
                return View();
            }
        }