public ActionResult EditEmail(InformationMail mail)
 {
     if (ModelState.IsValid)
     {
         db.Entry(mail).State = EntityState.Modified;
         db.SaveChanges();
         return(RedirectToAction("Index"));
     }
     return(View(mail));
 }
        public ActionResult EditEmail(int?id)
        {
            if (id == null)
            {
                return(new HttpStatusCodeResult(HttpStatusCode.BadRequest));
            }
            InformationMail item = db.InformationMails.Find(id);

            if (item == null)
            {
                return(HttpNotFound());
            }
            return(View(item));
        }