public IActionResult Update(int id)
        {
            var model = _departmanService.GetById(id);
            DepartmanUpdateView view = new DepartmanUpdateView()
            {
                DepartmanName = model.DepartmanName,
                Id            = model.Id
            };

            return(View());
        }
        public IActionResult Update(DepartmanUpdateView p)
        {
            if (ModelState.IsValid)
            {
                Departman departman = new Departman()
                {
                    Id            = p.Id,
                    DepartmanName = p.DepartmanName
                };
                _departmanService.Update(departman);
                return(RedirectToAction("Index"));
            }

            return(View(p));
        }