private void btn_add_mbid_Click(object sender, EventArgs e)
        {
            DBOperation bf      = new DBOperation();
            MainBoard   mb_data = new MainBoard(this.MBoard_ID, tbx_mb_num.Text, tbx_Company.Text);

            if (bf.Find_MainBoard_Data(mb_data) == 1)
            {
                bf.Updata_MainBoard_Data(mb_data);
                //textBox1.Text += "\r\n access_db have data\r\n!";
                //if (bf.Updata_IcData(ic_data) == 1)
                //    textBox1.Text += "\r\n access_db have up data ok\r\n!";
                //else
                //    textBox1.Text += "\r\n access_db updata error\r\n!";
            }
            else
            {
                if (bf.Add_MainBoard_Data(mb_data) == 1)
                {
                    MessageBox.Show("add main board id ok!");
                }
                else
                {
                    MessageBox.Show("add main board id error !");
                }
            }
        }