public ActionResult EditSousCategorie(int id)
        {
            if (Session["identifiant"] == null)
            {
                return(RedirectToAction("Index", "Home"));
            }

            ViewData["categorie"] = new SelectList(BissInventaireEntities.Instance.Categorie.ToList(), "Id_categorie", "libelle");

            var cat = db.FindSous_categorieById(id);

            return(View(cat));
        }