public IActionResult EndAddEmployee(UsersViewModel UsersViewModel)
        {
            if (!ModelState.IsValid)
            {
                return(View("AddEmployee", UsersViewModel));
            }


            User employee = new User()
            {
                FirstName = UsersViewModel.FirstName,
                LastName  = UsersViewModel.LastName,
                Email     = UsersViewModel.Email,
                Age       = UsersViewModel.Age,
            };

            UsersDataService.Add(employee);

            return(RedirectToAction("Index"));
        }