public ActionResult Delete(int?id)
        {
            if (!id.HasValue)
            {
                return(RedirectToAction("List"));
            }

            CandidatesService candidatesService = new CandidatesService();

            candidatesService.Delete(id.Value);
            return(RedirectToAction("List"));
        }
        public ActionResult Delete(int? id)
        {
            if (!id.HasValue)
            {
                return RedirectToAction("List");
            }

            CandidatesService candidatesService = new CandidatesService();
            candidatesService.Delete(id.Value);
            return RedirectToAction("List");
        }