public ActionResult DeleteConfirmed(int id)
        {
            if (!(bool)Session["login"])
            {
                return(RedirectToAction("Login", "Account"));
            }

            db.Database.ExecuteSqlCommand("UPDATE proveedor SET idrubro = NULL WHERE idrubro = {0}", id);

            rubro rubro = db.rubro.Find(id);

            db.rubro.Remove(rubro);
            db.SaveChanges();
            return(RedirectToAction("Index"));
        }
        public ActionResult Edit([Bind(Include = "id,descripcion")] rubro rubro)
        {
            if (!(bool)Session["login"])
            {
                return(RedirectToAction("Login", "Account"));
            }

            if (ModelState.IsValid)
            {
                db.Entry(rubro).State = EntityState.Modified;
                db.SaveChanges();
                return(RedirectToAction("Index"));
            }
            return(View(rubro));
        }
        public ActionResult Create([Bind(Include = "id,descripcion")] rubro rubro)
        {
            if (!(bool)Session["login"])
            {
                return(RedirectToAction("Login", "Account"));
            }

            if (ModelState.IsValid)
            {
                db.rubro.Add(rubro);
                db.SaveChanges();
                return(RedirectToAction("Index"));
            }

            return(View(rubro));
        }
        // GET: rubro/Edit/5
        public ActionResult Edit(int?id)
        {
            if (!(bool)Session["login"])
            {
                return(RedirectToAction("Login", "Account"));
            }

            if (id == null)
            {
                return(new HttpStatusCodeResult(HttpStatusCode.BadRequest));
            }
            rubro rubro = db.rubro.Find(id);

            if (rubro == null)
            {
                return(HttpNotFound());
            }
            return(View(rubro));
        }