public ActionResult GetEntity(int pkid) { RepositoryManager manger = new RepositoryManager(); var entity = manger.GetEntity <HomePageCarActivityEntity>(pkid); var regionList = new SE_HomePageConfigManager().GetHomePageCarActivityCity(pkid); Expression <Func <HomePageCACarInfoEntity, bool> > carExp = _ => _.FKCarActviityPKID == pkid; var carList = manger.GetEntityList(carExp); string carInfo = JsonConvert.SerializeObject(carList?.Select(_ => new { _.Brand, _.SalesName, _.u_Nian, _.u_PaiLiang, _.Vehicle })); ViewBag.CarItems = carInfo; ViewBag.City = JsonConvert.SerializeObject(regionList?.Select(_ => new { _.RegionID, _.ParentID })); return(View("Edit", entity)); }