使用内部foreach从C＃代码在MySql中插入数据的有效方法

Question

我有两个 DataTables

DataTable dtDataForTransactions;
DataTable dtDataForTransline; 

在我的C＃代码中。 dtDataForTransline可以针对dtDataForTransactions中的任何交易提供单个或多个记录。例如

dtDataForTransactions

transid | ticketid | storeid | TIMESTAMP   | transtypeid | total
----------------------------------------------------------------
A-101   | 101      | 1       | 20018-03-23 | 1           |60.00
A-102   | 102      | 1       | 20018-03-23 | 1           |30.25
A-103   | 103      | 1       | 20018-03-23 | 1           |75.50

dtDataForTransline

transid | productid | qty | price   
---------------------------------
A-101   | 1000001   | 1   |60.00 // single trnsline against transaction
// two entry against one A-102 transaction
A-102   | 1054141   | 1   |20.25 
A-102   | 5421441   | 2   |10.00 
// three entries for A-103 transaction
A-103   | 1088888   | 1   |20.50
A-103   | 5435415   | 3   |15.00
A-103   | 9921441   | 6   |40.00

如果发生意外事件，我正在使用事务滚动。我目前插入数据的方式需要很长时间（例如，事务表中的5条记录为15秒，透射表中有15条记录）。

如何使其高效，我的MySql数据库在云端，我正在从本地机器上打这个电话。

我的代码：

using (MySqlConnection con = new MySqlConnection(connectionMySql))
            {
                con.Open();
                foreach (DataRow row in dtDataForTransactions.Rows)
                {
                    try
                    {

                        tr = con.BeginTransaction();

                        MySqlCommand cmd = new MySqlCommand();

                        cmd = new MySqlCommand("INSERT INTO transaction (transid, ticketid, storeid, TIMESTAMP, transtypeid, total) Values (@transid, @ticketid, @storeid, @timestamp, @transtypeid, @total)", con, tr);
                        cmd.Parameters.Add(new MySqlParameter("@transid", row["transid"])).MySqlDbType = MySqlDbType.VarChar;
                        cmd.Parameters.Add(new MySqlParameter("@ticketid", row["ticketid"])).MySqlDbType = MySqlDbType.VarChar;
                        cmd.Parameters.Add(new MySqlParameter("@storeid", row["storeid"])).MySqlDbType = MySqlDbType.Int32;
                        cmd.Parameters.Add(new MySqlParameter("@timestamp", row["TIMESTAMP1"])).MySqlDbType = MySqlDbType.DateTime;
                        cmd.Parameters.Add(new MySqlParameter("@transtypeid", row["transtypeid"])).MySqlDbType = MySqlDbType.Int32;
                        cmd.Parameters.Add(new MySqlParameter("@total", row["total"])).MySqlDbType = MySqlDbType.Float;                       

                        cmd.ExecuteNonQuery();

                        DataTable dtTemp = dtDataForTransline.AsEnumerable().
                                           Where(s => s.Field<string>("transid") == row["transid"].ToString()).CopyToDataTable();



                        foreach (DataRow row2 in dtTemp.Rows)
                        {
                            cmd = new MySqlCommand("INSERT INTO transline (transid,productid,qty,price) values (@transid, @productid, @qty, @price)", con, tr);
                            cmd.Parameters.Add(new MySqlParameter("@transid", row2["transid"])).MySqlDbType = MySqlDbType.VarChar;
                            cmd.Parameters.Add(new MySqlParameter("@productid", row2["barcode"])).MySqlDbType = MySqlDbType.VarChar;
                            cmd.Parameters.Add(new MySqlParameter("@qty", row2["qty"])).MySqlDbType = MySqlDbType.Double;
                            cmd.Parameters.Add(new MySqlParameter("@price", row2["price"])).MySqlDbType = MySqlDbType.Decimal;
                            //cmd.Parameters.Add(new MySqlParameter("@transid1", row["transid"])).MySqlDbType = MySqlDbType.VarChar;

                            cmd.ExecuteNonQuery();                            

                        }
                        tr.Commit();
                        cmd.Dispose();
                    }
                    catch (Exception ex)
                    {
                        tr.Rollback();                        
                        lblMessage.Text = ex.Message;
                        break;
                    }
     }