public ActionResult Create(VW_ItemMaterial vw_itemmaterial)
        {
            if (ModelState.IsValid)
            {
                db.VW_ItemMaterial.Add(vw_itemmaterial);
                db.SaveChanges();
                return RedirectToAction("Index");
            }

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