private void tb_juchu_cd2_DoubleClick(object sender, EventArgs e)
        {
            if (tb_torihikisaki_cd.Text == null || tb_torihikisaki_cd.Text == "" || tb_juchu_cd1.Text == null || tb_juchu_cd1.Text == "")
            {
                MessageBox.Show("取引先コードと受注コード1が入力されていないと検索できません。");
                return;
            }

            //選択画面へ
            string w_cd;

            w_cd = "";
            DataTable w_dt = new DataTable();

            w_dt = tss.OracleSelect("select A.torihikisaki_cd,A.juchu_cd1,A.juchu_cd2,B.seihin_name,A.kari_juchu_kbn "
                                    + "from tss_juchu_m a left outer join tss_seihin_m B on A.seihin_cd = B.seihin_cd "
                                    + "where A.torihikisaki_cd = '" + tb_torihikisaki_cd.Text + "' and A.juchu_cd1 = '" + tb_juchu_cd1.Text + "'");
            if (w_dt.Rows.Count > 0)
            {
                w_cd = tss.select_juchu_cd(w_dt);
            }
            else
            {
                MessageBox.Show("登録されている受注はありません。");
            }
            if (w_cd != null && w_cd != "")
            {
                tb_juchu_cd2.Text = w_cd;
                find_juchu_cd2(tb_torihikisaki_cd.Text, tb_juchu_cd1.Text, tb_juchu_cd2.Text);
            }
        }