public ActionResult Create(ContatoModel contato)
 {
     try
     {
         if (ModelState.IsValid)
         {
             repo.SaveByName(contato, User.Identity.Name.ToString());
             return(RedirectToAction("Index"));
         }
         else
         {
             return(View(contato));
         }
     }
     catch
     {
         return(View());
     }
 }