public ActionResult InsertFactura(FacturaBO dto)
        {
            NegFactura obj = new NegFactura();

            obj.Insert(dto);
            return(RedirectToAction("InsertDetalleProd"));
        }
        public ActionResult InsertDetalleProd(Factura_ProductoBO dto)
        {
            NegFactura obj = new NegFactura();

            obj.InsertDetalleProd(dto);
            return(RedirectToAction("InsertDetalleServ"));
        }
        public ActionResult InsertDetalleServ(Factura_ServicioBO dto)
        {
            NegFactura obj = new NegFactura();

            obj.InsertDetalleServ(dto);

            return(RedirectToAction("Listar"));
        }
        // GET: Factura
        public ActionResult Listar()
        {
            NegFactura obj = new NegFactura();

            return(View(obj.Listar()));
        }