public ActionResult Register(Staff r)
        {
            if (ModelState.IsValid)
            {
                r.insertEmployee(r);
            }
            else
            {

                return View(r);
            }
            return RedirectToAction("Details");
        }
        public ActionResult Register(Staff r)
        {
            if (r == null)
            {
                return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
            }
            if (r == null)
            {
                return HttpNotFound();
            }

            if (ModelState.IsValid)
            {
                r.insertEmployee(r);
            }
            else
            {

                return View(r);
            }
            return RedirectToAction("Details");
        }