public ActionResult Create()
 {
     var msg = new Message{
         Name = User.Identity.IsAuthenticated ? User.Identity.Name : ""
     };
     return View(msg);
 }
        public ActionResult Create(Message message)
        {
            if (ModelState.IsValid)
            {
                message.DatePosted = DateTime.Now;
                _db.Messages.Add(message);
                _db.SaveChanges();
                return RedirectToAction("Index");
            }

            return View(message);
        }