private void tlBtnDelete_Click(object sender, EventArgs e)
        {
            if (txtUnitCode.Text.Trim() == string.Empty)
            {
                MessageBox.Show("删除--往来单位数据--失败!", "错误提示!", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }
            unitsInfo.UnitCode = txtUnitCode.Text;
            //执行删除
            int id = baseinfo.DeleteUnits(unitsInfo);

            MessageBox.Show("删除--往来单位数据--成功!", "成功提示!", MessageBoxButtons.OK, MessageBoxIcon.Information);
            dgvUnitsList.DataSource = baseinfo.GetAllUnits("tb_units").Tables[0].DefaultView;
            SetdgvUnitsListHeadText();
            clearText();
        }