public ActionResult Edit(Employee employee) {
     if (ModelState.IsValid) {
         db.Entry(employee).State = EntityState.Modified;
         db.SaveChanges();
         return RedirectToAction("Index");
     }
     return View(employee);
 }
        public ActionResult Create(Employee employee) {
            if (ModelState.IsValid) {
                ViewBag.Items = GetDepartment();
                db.Employees.Add(employee);
                db.SaveChanges();
                return RedirectToAction("Index");
            }

            return View(employee);
        }