private void btnDelete_Click(object sender, EventArgs e)
        {
            ComInfo      comInfo = new ComInfo();
            DialogResult msgOk   = comInfo.deleteConfrim("공정등록", txt_lot_no.Text.ToString());

            if (msgOk == DialogResult.No)
            {
                return;
            }

            wnDm wDm   = new wnDm();
            int  rsNum = wDm.deleteWorkFlow(txt_lot_no.Text.ToString());

            if (rsNum == 0)
            {
                flow_cnt = 0; //해당 공정 카운트 리셋

                btnFlow.Enabled   = false;
                btnDelete.Enabled = false;

                txt_lot_no.Text    = "";
                txt_item_nm.Text   = "";
                txt_item_cd.Text   = "";
                txt_spec.Text      = "";
                txt_work_date.Text = "";

                txt_inst_amt.Text = "0";
                txt_char_amt.Text = "0";
                txt_pack_amt.Text = "0";

                for (int i = 0; i < flow_cnt; i++)
                {
                    lbl_flow_cd[i].Text      = "";
                    lbl_flow_nm[i].Text      = "";
                    lbl_flow_pr_type[i].Text = "";
                    lbl_flow_seq[i].Text     = "";
                }
                //btn[flow_cnt - 1].Visible = false;

                for (int i = 0; i < max_flow_cnt; i++)
                {
                    dgv[i].Rows.Clear(); //GridView 초기화
                }

                gridList();

                MessageBox.Show("성공적으로 삭제하였습니다.");
            }
        }