public ActionResult Edit(LU_MachineClass lu_machineclass)
 {
     if (ModelState.IsValid)
     {
         db.Entry(lu_machineclass).State = EntityState.Modified;
         db.SaveChanges();
         return RedirectToAction("Index");
     }
     return View(lu_machineclass);
 }
        public ActionResult Create(LU_MachineClass lu_machineclass)
        {
            if (ModelState.IsValid)
            {
                db.LU_MachineClass.Add(lu_machineclass);
                db.SaveChanges();
                return RedirectToAction("Index");
            }

            return View(lu_machineclass);
        }