public ActionResult Create(Articulo model)
        {
            try
            {
                _articuloRepository = new ArticuloRepository();
                _articuloRepository.GuardarArticulo(model);

                return RedirectToAction("Index");
            }
            catch
            {
                return View();
            }
        }
 // GET: Articulo
 public ActionResult Index()
 {
     _articuloRepository = new ArticuloRepository();
     var articulos = _articuloRepository.ObtenerArticulos();
     return View(articulos);
 }