public IQueryable <Data.AccountingTafsilStructureDefine> NotInFilter() { IQueryable <Guid?> FilterItems = Business.GetAccountingMoeinTafsilRelationBussiness().GetAll().Select(r => r.AccountingTafsil_ID); try { return(this.GetAll().Where(r => !FilterItems.Contains(r.ID))); } catch { throw; } }