将datagridview导出到csv文件，向其中添加一些数据

Question

我正在尝试将数据从datagridview导出到mysql的csv。我希望每一行都有一些额外的信息。

mysql查询： 从wlist中选择车辆登记

我的csv输出：

YV07WMU

我需要像

这样的输出

YV07WMU; GBR; 2014年8月20日; - 这里我需要添加GBR;和今天的约会;在每一行的末尾。

这是我的代码：我不会在哪里出错。

MySqlCommand myCommand = new MySqlCommand();
            myCommand.Connection = conn;


            myCommand.CommandText = "select VehicleRegistration from blacklist";
            //myCommand.Connection = myConn;
            DataTable data = new DataTable();
            MySqlDataAdapter myAdapter = new MySqlDataAdapter(myCommand);
            //myAdapter.SelectCommand = myCommand;
            myAdapter.Fill(data);
            dataGridView1.DataSource = data;
            this.dataGridView1.Refresh();

            if (dataGridView1.RowCount > 0)
            {
                string value = "";
                DataGridViewRow dr = new DataGridViewRow();
                StreamWriter swOut = new StreamWriter("C:/a/blist.csv");

                //write header rows to csv
                for (int i = 0; i <= dataGridView1.Columns.Count - 1; i++)
                {
                    if (i > 0)
                    {
                        //  swOut.Write(",");
                    }
                    // swOut.Write(dataGridView1.Columns[i].HeaderText);
                }

                swOut.WriteLine();

                //write DataGridView rows to csv
                for (int j = 0; j <= dataGridView1.Rows.Count - 1; j++)
                {
                    if (j > 0)
                    {
                        swOut.WriteLine(" ");
                    }

                    dr = dataGridView1.Rows[j];

                    for (int i = 0; i <= dataGridView1.Columns.Count - 1; i++)
                    {
                        if (i > 0)
                        {
                            swOut.WriteLine(",");
                        }

                        value = dr.Cells[i].Value.ToString();
                        //replace comma's with spaces
                        value = value.Replace(',', ' ');
                        //replace embedded newlines with spaces
                        value = value.Replace(Environment.NewLine, " ");

                        swOut.Write(value);
                    }
                }
                swOut.Close();
            }
            conn.Close();
        }