public ActionResult Update(long id) { var rols = (byte[])Session["rols"]; if (rols == null) //redirect to SinIn { return(RedirectToAction("Index", "Home")); } else if (rols.Contains <byte>(1)) { categories _categories = new categories(); ViewBag.Categories = _categories.GetAll(); var product = _products.GetOneById(id); return(View(product)); } else//redirect to Home { return(RedirectToAction("Home", "Home")); } }