public ActionResult UpdateContact(Contact _Contact)
 {
     try
     {
         ContactsDB.Entry(_Contact).State = System.Data.Entity.EntityState.Modified;
         ContactsDB.SaveChanges();
         return new HttpStatusCodeResult(HttpStatusCode.Accepted);
     }
     catch
     {
         return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
     }
 }
 public ActionResult AddContact(Contact _Contact)
 {
     try
     {
         ContactsDB.Contacts.Add(_Contact);
         ContactsDB.SaveChanges();
         return new HttpStatusCodeResult(HttpStatusCode.Created);  // OK = 200
     }
     catch
     {
         return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
     }
 }