ASP.Net MVC Error: There is no ViewData item of type IEnumerableSelectListItem that has the key State

Getting Error There is no ViewData item of type IEnumerableSelectListItem that has the key State

    public class user_detail
    {
        public int User_id { get; set; }
        public string Name { get; set; }
        public string Email { get; set; }
        public Nullable<long> Phone { get; set; }

        public IEnumerable<SelectListItem> State { get; set; }

        public int State_id { get; set; }
        public string City { get; set; }
        public string Address { get; set; }
        public string Password { get; set; }
        public string User_Type { get; set; }
        public Nullable<int> Org_id { get; set; }
    }

 Controller action

            var stat = db.States.ToList();
            //Assigning generic list to ViewBag
            List<SelectListItem> Statlist = new List<SelectListItem>();
            foreach (State item in stat)
            {
                Statlist.Add(new SelectListItem
                {
                    Text = item.State1,
                    Value = item.State_id.ToString()
                });

            }
            ViewBag.States = Statlist;

            return View();

data saved in database but this error always come