/// <summary> /// query signal record by lanbuda expression ByReadOnlyDB /// </summary> /// <param name="predicate"></param> /// <returns></returns> public SiteSettingDto GetByReadOnlyDB(Expression <Func <SiteSetting, bool> > predicate) { try { return(Mapper.Map <SiteSettingDto>(_repository.FirstOrDefaultByReadOnlyDB(predicate))); } catch (Exception ex) { _log.LogError("SiteSettingAppService GetByReadOnlyDB lanbuda error occured:" + ex.Message); return(null); } }