public Data.Check GetByNumber(string chequeNumber, string bankName) { try { var funds = Business.GetFundsBusiness().GetByFBank(bankName).ToList(); var cheques = this.GetByCNO(chequeNumber).ToList(); return(cheques.Join(funds, o => o.CBank, i => i.ID, (o, i) => new { Cheque = o }).Select(r => r.Cheque).FirstOrDefault()); } catch { throw; } }