private void dataGridView1_CellMouseDoubleClick(object sender, DataGridViewCellMouseEventArgs e)
        {
            if (dataGridView1.CurrentRow == null)
            {
                return;
            }
            else
            {
                string strBillNo = dataGridView1.CurrentRow.Cells["单号"].Value.ToString();

                挂账单明细 frm = new 挂账单明细(strBillNo, m_authFlag);

                frm.ShowDialog();

                DataRefresh();
                PositioningRecord(strBillNo);
            }
        }
        private void btnAdd_Click(object sender, EventArgs e)
        {
            挂账单明细 frm = new 挂账单明细("", m_authFlag);

            frm.ShowDialog();
        }