public ActionResult registrarDetalle()
        {
            TB_DETALLE_DEMANDA de = new TB_DETALLE_DEMANDA();
            TB_DEMANDA         d  = new TB_DEMANDA();

            de.NUM_DEMANDA = d.generarCodigoDetalle();
            return(View(de));
        }
        public ActionResult registrarDetalle(TB_DETALLE_DEMANDA collection)
        {
            try
            {
                // TODO: Add insert logic here
                contexto.TB_DETALLE_DEMANDA.Add(collection);
                contexto.SaveChanges();

                return(RedirectToAction("Index", "Home"));
            }
            catch
            {
                var error = "Error en el registro";
                return(Json(error));
            }
        }