private void btnAdd_Click(object sender, EventArgs e)
        {
            if (CheckDate())
            {
                GetMessage();
                CreateDataRow();

                if (!m_sell.AddMatchingInfo(m_lnqNewAndOld, out m_err))
                {
                    MessageDialog.ShowPromptMessage(m_err);
                }
                else
                {
                    MessageDialog.ShowPromptMessage("添加成功!");
                }

                dataGridView1.DataSource            = m_sell.GetProductCodeMatchingInfo();
                dataGridView1.Columns["序号"].Visible = false;
                PositioningRecord(m_dr);
            }
        }