public ActionResult <ItemResponse <Paged <ProviderBase> > > SelectByUserId(int id, int pageIndex, int pageSize) { int code = 200; BaseResponse response = null; try { Paged <ProviderBase> providers = _service.SelectByUserId(id, pageIndex, pageSize); if (providers == null) { code = 404; response = new ErrorResponse("App resource not found."); } else { response = new ItemResponse <Paged <ProviderBase> >() { Item = providers }; } } catch (Exception ex) { code = 500; response = new ErrorResponse(ex.Message); } return(StatusCode(code, response)); }