public ActionResult Register(UserAccount acc)
 {
     if(ModelState.IsValid)
     {
         using (UserDBContext db = new UserDBContext())
         {
             db.userAccount.Add(acc);
             db.SaveChanges();
         }
         ModelState.Clear();
         ViewBag.Message = acc.FirstName + " " + acc.LastName + " Successfully Registered!";
     }
     return View();
 }