public ActionResult EchoNamedArgs(string text, DateTime date, Contact contact)
 {
     return Json(new {
         text,
         date,
         contact
     });
 }
 public ActionResult Update(Contact contact)
 {
     db.Entry(contact).State = EntityState.Modified;
     db.SaveChanges();
     return Json(new {
         success = true,
         data = contact
     });
 }