public ActionResult Edit(Message message)
 {
     if (ModelState.IsValid)
     {
         db.Entry(message).State = EntityState.Modified;
         db.SaveChanges();
         return RedirectToAction("Index");
     }
     ViewBag.Sender = new SelectList(db.Users, "UserID", "LastName", message.Sender);
     ViewBag.Recepient = new SelectList(db.Users, "UserID", "LastName", message.Recepient);
     return View(message);
 }
        public ActionResult Create(Message message)
        {
            if (ModelState.IsValid)
            {
                db.Messages.Add(message);
                db.SaveChanges();
                return RedirectToAction("Index");  
            }

            ViewBag.Sender = new SelectList(db.Users, "UserID", "LastName", message.Sender);
            ViewBag.Recepient = new SelectList(db.Users, "UserID", "LastName", message.Recepient);
            return View(message);
        }