private void btnAdd_Click(object sender, EventArgs e)
        {
            文件修订废止申请单明细 frm = new 文件修订废止申请单明细(null);

            frm.ShowDialog();
            RefreshData();
            PositioningRecord(frm.StrBillNo);
        }
        private void btnFind_Click(object sender, EventArgs e)
        {
            if (dataGridView1.CurrentRow == null)
            {
                return;
            }

            文件修订废止申请单明细 frm = new 文件修订废止申请单明细(dataGridView1.CurrentRow.Cells["单据号"].Value.ToString());

            frm.ShowDialog();

            RefreshData();
            PositioningRecord(frm.StrBillNo);
        }