public IActionResult Details(int id)
        {
            List <ViewModelEmployee> data = ViewModelEmployee.GetData();
            var result = from item in data where item.Id == id select item;

            if (result.Count() == 0)
            {
                return(NotFound("Сотрудник по Id = " + id.ToString() + " - не найден."));
            }
            return(View(result.First()));
        }
        public IActionResult List()
        {
            List <ViewModelEmployee> data = ViewModelEmployee.GetData();

            return(View(data));
        }