//会员打折 private void btnDiscount_Click(object sender, EventArgs e) { //BathClass.sendMessageToCamera(db, m_Seats[0].systemId); var id = string.Join("|", m_Seats.Select(x => x.systemId).ToArray()); MemberPromotionForm memberPromotionForm = new MemberPromotionForm(m_Seats, id); memberPromotionForm.ShowDialog(); m_Member = memberPromotionForm.m_member; this.Close(); }