mysql中插入多条记录-微软批处理

当向mysql中插入大量数据时，可以使用微软的批处理方式。这样可以防止内存溢出又提高了效率。我写了一个mysql中插入多条记录的例子。赋值代码可以直接使用。

1、首先需要添加两个dll

MySql.Data.dll和MySqlBulkCopy.dll

2、把MySqlHelper.cs这个类文件加入到项目中 （我把代码贴出来，复制后建一个MySqlHelper.cs）

MySqlHelper.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using System.Collections;
using System.Data;
using MySql.Data.MySqlClient;

namespace Baitour.Utility
{
    /// <summary>
    /// The MySqlHelper class is intended to encapsulate high performance, scalable best practices for
    /// common uses of MySqlClient.
    /// </summary>
    public sealed class MySqlHelper
    {
        #region private utility methods & constructors

        //Since this class provides only static methods, make the default constructor private to prevent
        //instances from being created with "new MySqlHelper()".

        public static readonly string ConnectionString = System.Configuration.ConfigurationSettings.AppSettings["MySqlConnString"];

        private MySqlHelper() { }

        /// <summary>
        /// This method is used to attach array's of MySqlParameters to an MySqlCommand.
        ///
        /// This method will assign a value of DbNull to any parameter with a direction of
        /// InputOutput and a value of null.
        ///
        /// This behavior will prevent default values from being used, but
        /// this will be the less common case than an intended pure output parameter (derived as InputOutput)
        /// where the user provided no input value.
        /// </summary>
        /// <param name="command">The command to which the parameters will be added</param>
        /// <param name="commandParameters">an array of MySqlParameters tho be added to command</param>
        private static void AttachParameters(MySqlCommand command, MySqlParameter[] commandParameters)
        {
            foreach (MySqlParameter p in commandParameters)
            {
                //check for derived output value with no value assigned
                if ((p.Direction == ParameterDirection.InputOutput) && (p.Value == null))
                {
                    p.Value = DBNull.Value;
                }

                command.Parameters.Add(p);
            }
        }

        /// <summary>
        /// This method assigns an array of values to an array of MySqlParameters.
        /// </summary>
        /// <param name="commandParameters">array of MySqlParameters to be assigned values</param>
        /// <param name="parameterValues">array of objects holding the values to be assigned</param>
        private static void AssignParameterValues(MySqlParameter[] commandParameters, object[] parameterValues)
        {
            if ((commandParameters == null) || (parameterValues == null))
            {
                //do nothing if we get no data
                return;
            }

            // we must have the same number of values as we pave parameters to put them in
            if (commandParameters.Length != parameterValues.Length)
            {
                throw new ArgumentException("Parameter count does not match Parameter Value count.");
            }

            //iterate through the MySqlParameters, assigning the values from the corresponding position in the
            //value array
            for (int i = 0, j = commandParameters.Length; i < j; i++)
            {
                commandParameters[i].Value = parameterValues[i];
            }
        }

        /// <summary>
        /// This method opens (if necessary) and assigns a connection, transaction, command type and parameters
        /// to the provided command.
        /// </summary>
        /// <param name="command">the MySqlCommand to be prepared</param>
        /// <param name="connection">a valid MySqlConnection, on which to execute this command</param>
        /// <param name="transaction">a valid MySqlTransaction, or 'null'</param>
        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
        /// <param name="commandText">the stored procedure name or PL/SQL command</param>
        /// <param name="commandParameters">an array of MySqlParameters to be associated with the command or 'null' if no parameters are required</param>
        private static void PrepareCommand(MySqlCommand command, MySqlConnection connection, MySqlTransaction transaction, CommandType commandType, string commandText, MySqlParameter[] commandParameters)
        {
            //if the provided connection is not open, we will open it
            if (connection.State != ConnectionState.Open)
            {
                connection.Open();
            }

            //associate the connection with the command
            command.Connection = connection;

            //set the command text (stored procedure name or MySql statement)
            command.CommandText = commandText;

            //honyu添加
            //command.CommandTimeout = connection.ConnectionTimeout;
            command.CommandTimeout = 300;//超时时间5分钟

            //if we were provided a transaction, assign it.
            if (transaction != null)
            {
                command.Transaction = transaction;
            }

            //set the command type
            command.CommandType = commandType;

            //attach the command parameters if they are provided
            if (commandParameters != null)
            {
                AttachParameters(command, commandParameters);
            }

            return;
        }

        #endregion private utility methods & constructors

        #region ExecuteNonQuery

        /// <summary>
        /// Execute an MySqlCommand (that returns no resultset and takes no parameters) against the database specified in
        /// the connection string.
        /// </summary>
        /// <remarks>
        /// e.g.:
        ///  int result = ExecuteNonQuery(connString, CommandType.StoredProcedure, "PublishOrders");
        /// </remarks>
        /// <param name="connectionString">a valid connection string for an MySqlConnection</param>
        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
        /// <param name="commandText">the stored procedure name or PL/SQL command</param>
        /// <returns>an int representing the number of rows affected by the command</returns>
        public static int ExecuteNonQuery(string connectionString, CommandType commandType, string commandText)
        {
            //pass through the call providing null for the set of MySqlParameters
            return ExecuteNonQuery(connectionString, commandType, commandText, (MySqlParameter[])null);
        }

        /// <summary>
        /// Execute an MySqlCommand (that returns no resultset) against the database specified in the connection string
        /// using the provided parameters.
        /// </summary>
        /// <remarks>
        /// e.g.:
        ///  int result = ExecuteNonQuery(connString, CommandType.StoredProcedure, "PublishOrders", new MySqlParameter("@prodid", 24));
        /// </remarks>
        /// <param name="connectionString">a valid connection string for a MySqlConnection</param>
        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
        /// <param name="commandText">the stored procedure name or PL/SQL command</param>
        /// <param name="commandParameters">an array of MySqlParameters used to execute the command</param>
        /// <returns>an int representing the number of rows affected by the command</returns>
        public static int ExecuteNonQuery(string connectionString, CommandType commandType, string commandText, params MySqlParameter[] commandParameters)
        {
            //create & open an MySqlConnection, and dispose of it after we are done.
            using (MySqlConnection cn = new MySqlConnection(connectionString))
            {
                cn.Open();

                //call the overload that takes a connection in place of the connection string
                return ExecuteNonQuery(cn, commandType, commandText, commandParameters);
            }
        }

        /// <summary>
        /// Execute a stored procedure via an MySqlCommand (that returns no resultset) against the database specified in
        /// the connection string using the provided parameter values.  This method will query the database to discover the parameters for the
        /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
        /// </summary>
        /// <remarks>
        /// This method provides no access to output parameters or the stored procedure's return value parameter.
        ///
        /// e.g.:
        ///  int result = ExecuteNonQuery(connString, "PublishOrders", 24, 36);
        /// </remarks>
        /// <param name="connectionString">a valid connection string for a MySqlConnection</param>
        /// <param name="spName">the name of the stored prcedure</param>
        /// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
        /// <returns>an int representing the number of rows affected by the command</returns>
        public static int ExecuteNonQuery(string connectionString, string spName, params object[] parameterValues)
        {
            //if we got parameter values, we need to figure out where they go
            if ((parameterValues != null) && (parameterValues.Length > 0))
            {
                //pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
                MySqlParameter[] commandParameters = MySqlHelperParameterCache.GetSpParameterSet(connectionString, spName);

                //assign the provided values to these parameters based on parameter order
                AssignParameterValues(commandParameters, parameterValues);

                //call the overload that takes an array of MySqlParameters
                return ExecuteNonQuery(connectionString, CommandType.StoredProcedure, spName, commandParameters);
            }
            //otherwise we can just call the SP without params
            else
            {
                return ExecuteNonQuery(connectionString, CommandType.StoredProcedure, spName);
            }
        }

        /// <summary>
        /// Execute an MySqlDbCommand (that returns no resultset and takes no parameters) against the provided MySqlConnection.
        /// </summary>
        /// <remarks>
        /// e.g.:
        ///  int result = ExecuteNonQuery(conn, CommandType.StoredProcedure, "PublishOrders");
        /// </remarks>
        /// <param name="connection">a valid MySqlConnection</param>
        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
        /// <param name="commandText">the stored procedure name or PL/SQL command</param>
        /// <returns>an int representing the number of rows affected by the command</returns>
        public static int ExecuteNonQuery(MySqlConnection connection, CommandType commandType, string commandText)
        {
            //pass through the call providing null for the set of MySqlParameters
            return ExecuteNonQuery(connection, commandType, commandText, (MySqlParameter[])null);
        }

        /// <summary>
        /// Execute an MySqlCommand (that returns no resultset) against the specified MySqlConnection
        /// using the provided parameters.
        /// </summary>
        /// <remarks>
        /// e.g.:
        ///  int result = ExecuteNonQuery(conn, CommandType.StoredProcedure, "PublishOrders", new MySqlParameter("@prodid", 24));
        /// </remarks>
        /// <param name="connection">a valid MySqlConnection</param>
        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
        /// <param name="commandText">the stored procedure name or PL/SQL command</param>
        /// <param name="commandParameters">an array of MySqlParamters used to execute the command</param>
        /// <returns>an int representing the number of rows affected by the command</returns>
        public static int ExecuteNonQuery(MySqlConnection connection, CommandType commandType, string commandText, params MySqlParameter[] commandParameters)
        {
            //create a command and prepare it for execution
            MySqlCommand cmd = new MySqlCommand();
            PrepareCommand(cmd, connection, (MySqlTransaction)null, commandType, commandText, commandParameters);

            //finally, execute the command.
            return cmd.ExecuteNonQuery();
        }

        /// <summary>
        /// Execute a stored procedure via an MySqlCommand (that returns no resultset) against the specified MySqlConnection
        /// using the provided parameter values.  This method will query the database to discover the parameters for the
        /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
        /// </summary>
        /// <remarks>
        /// This method provides no access to output parameters or the stored procedure's return value parameter.
        ///
        /// e.g.:
        ///  int result = ExecuteNonQuery(conn, "PublishOrders", 24, 36);
        /// </remarks>
        /// <param name="connection">a valid MySqlConnection</param>
        /// <param name="spName">the name of the stored prcedure</param>
        /// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
        /// <returns>an int representing the number of rows affected by the command</returns>
        public static int ExecuteNonQuery(MySqlConnection connection, string spName, params object[] parameterValues)
        {
            //if we got parameter values, we need to figure out where they go
            if ((parameterValues != null) && (parameterValues.Length > 0))
            {
                //pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
                MySqlParameter[] commandParameters = MySqlHelperParameterCache.GetSpParameterSet(connection.ConnectionString, spName);

                //assign the provided values to these parameters based on parameter order
                AssignParameterValues(commandParameters, parameterValues);

                //call the overload that takes an array of MySqlParameters
                return ExecuteNonQuery(connection, CommandType.StoredProcedure, spName, commandParameters);
            }
            //otherwise we can just call the SP without params
            else
            {
                return ExecuteNonQuery(connection, CommandType.StoredProcedure, spName);
            }
        }

        /// <summary>
        /// Execute an MySqlCommand (that returns no resultset and takes no parameters) against the provided MySqlTransaction.
        /// </summary>
        /// <remarks>
        /// e.g.:
        ///  int result = ExecuteNonQuery(trans, CommandType.StoredProcedure, "PublishOrders");
        /// </remarks>
        /// <param name="transaction">a valid MySqlTransaction</param>
        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
        /// <param name="commandText">the stored procedure name or PL/SQL command</param>
        /// <returns>an int representing the number of rows affected by the command</returns>
        public static int ExecuteNonQuery(MySqlTransaction transaction, CommandType commandType, string commandText)
        {
            //pass through the call providing null for the set of MySqlParameters
            return ExecuteNonQuery(transaction, commandType, commandText, (MySqlParameter[])null);
        }

        /// <summary>
        /// Execute an MySqlCommand (that returns no resultset) against the specified MySqlTransaction
        /// using the provided parameters.
        /// </summary>
        /// <remarks>
        /// e.g.:
        ///  int result = ExecuteNonQuery(trans, CommandType.StoredProcedure, "GetOrders", new MySqlParameter("@prodid", 24));
        /// </remarks>
        /// <param name="transaction">a valid MySqlTransaction</param>
        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
        /// <param name="commandText">the stored procedure name or PL/SQL command</param>
        /// <param name="commandParameters">an array of MySqlParamters used to execute the command</param>
        /// <returns>an int representing the number of rows affected by the command</returns>
        public static int ExecuteNonQuery(MySqlTransaction transaction, CommandType commandType, string commandText, params MySqlParameter[] commandParameters)
        {
            //create a command and prepare it for execution
            MySqlCommand cmd = new MySqlCommand();
            PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters);

            //finally, execute the command.
            return cmd.ExecuteNonQuery();
        }

        /// <summary>
        /// Execute a stored procedure via an MySqlCommand (that returns no resultset) against the specified
        /// MySqlTransaction using the provided parameter values.  This method will query the database to discover the parameters for the
        /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
        /// </summary>
        /// <remarks>
        /// This method provides no access to output parameters or the stored procedure's return value parameter.
        ///
        /// e.g.:
        ///  int result = ExecuteNonQuery(conn, trans, "PublishOrders", 24, 36);
        /// </remarks>
        /// <param name="transaction">a valid MySqlTransaction</param>
        /// <param name="spName">the name of the stored procedure</param>
        /// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
        /// <returns>an int representing the number of rows affected by the command</returns>
        public static int ExecuteNonQuery(MySqlTransaction transaction, string spName, params object[] parameterValues)
        {
            //if we got parameter values, we need to figure out where they go
            if ((parameterValues != null) && (parameterValues.Length > 0))
            {
                //pull the parameters for this stored procedure from the parameter cache (or discover them & populet the cache)
                MySqlParameter[] commandParameters = MySqlHelperParameterCache.GetSpParameterSet(transaction.Connection.ConnectionString, spName);

                //assign the provided values to these parameters based on parameter order
                AssignParameterValues(commandParameters, parameterValues);

                //call the overload that takes an array of MySqlParameters
                return ExecuteNonQuery(transaction, CommandType.StoredProcedure, spName, commandParameters);
            }
            //otherwise we can just call the SP without params
            else
            {
                return ExecuteNonQuery(transaction, CommandType.StoredProcedure, spName);
            }
        }

        #endregion ExecuteNonQuery

        #region ExecuteDataSet

        /// <summary>
        /// Execute an MySqlCommand (that returns a resultset and takes no parameters) against the database specified in
        /// the connection string.
        /// </summary>
        /// <remarks>
        /// e.g.:
        ///  DataSet ds = ExecuteDataset(connString, CommandType.StoredProcedure, "GetOrders");
        /// </remarks>
        /// <param name="connectionString">a valid connection string for an MySqlConnection</param>
        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
        /// <param name="commandText">the stored procedure name or PL/SQL command</param>
        /// <returns>a dataset containing the resultset generated by the command</returns>
        public static DataSet ExecuteDataset( CommandType commandType, string commandText)
        {
            //pass through the call providing null for the set of MySqlParameters
            return ExecuteDataset(ConnectionString, commandType, commandText, (MySqlParameter[])null);
        }

        /// <summary>
        /// Execute an MySqlCommand (that returns a resultset) against the database specified in the connection string
        /// using the provided parameters.
        /// </summary>
        /// <remarks>
        /// e.g.:
        ///  DataSet ds = ExecuteDataset(connString, CommandType.StoredProcedure, "GetOrders", new MySqlParameter("@prodid", 24));
        /// </remarks>
        /// <param name="connectionString">a valid connection string for an MySqlConnection</param>
        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
        /// <param name="commandText">the stored procedure name or PL/SQL command</param>
        /// <param name="commandParameters">an array of MySqlParamters used to execute the command</param>
        /// <returns>a dataset containing the resultset generated by the command</returns>
        public static DataSet ExecuteDataset(string connectionString, CommandType commandType, string commandText, params MySqlParameter[] commandParameters)
        {
            //create & open an MySqlConnection, and dispose of it after we are done.
            using (MySqlConnection cn = new MySqlConnection(connectionString))
            {
                cn.Open();

                //call the overload that takes a connection in place of the connection string
                return ExecuteDataset(cn, commandType, commandText, commandParameters);
            }
        }

        /// <summary>
        /// Execute a stored procedure via an MySqlCommand (that returns a resultset) against the database specified in
        /// the conneciton string using the provided parameter values.  This method will query the database to discover the parameters for the
        /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
        /// </summary>
        /// <remarks>
        /// This method provides no access to output parameters or the stored procedure's return value parameter.
        ///
        /// e.g.:
        ///  DataSet ds = ExecuteDataset(connString, "GetOrders", 24, 36);
        /// </remarks>
        /// <param name="connectionString">a valid connection string for an MySqlConnection</param>
        /// <param name="spName">the name of the stored procedure</param>
        /// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
        /// <returns>a dataset containing the resultset generated by the command</returns>
        public static DataSet ExecuteDataset(string connectionString, string spName, params object[] parameterValues)
        {
            //if we got parameter values, we need to figure out where they go
            if ((parameterValues != null) && (parameterValues.Length > 0))
            {
                //pull the parameters for this stored procedure from the parameter cache (or discover them & populet the cache)
                MySqlParameter[] commandParameters = MySqlHelperParameterCache.GetSpParameterSet(connectionString, spName);

                //assign the provided values to these parameters based on parameter order
                AssignParameterValues(commandParameters, parameterValues);

                //call the overload that takes an array of MySqlParameters
                return ExecuteDataset(connectionString, CommandType.StoredProcedure, spName, commandParameters);
            }
            //otherwise we can just call the SP without params
            else
            {
                return ExecuteDataset(connectionString, CommandType.StoredProcedure, spName);
            }
        }

        /// <summary>
        /// Execute an MySqlCommand (that returns a resultset and takes no parameters) against the provided MySqlConnection.
        /// </summary>
        /// <remarks>
        /// e.g.:
        ///  DataSet ds = ExecuteDataset(conn, CommandType.StoredProcedure, "GetOrders");
        /// </remarks>
        /// <param name="connection">a valid MySqlConnection</param>
        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
        /// <param name="commandText">the stored procedure name or PL/SQL command</param>
        /// <returns>a dataset containing the resultset generated by the command</returns>
        public static DataSet ExecuteDataset(MySqlConnection connection, CommandType commandType, string commandText)
        {
            //pass through the call providing null for the set of MySqlParameters
            return ExecuteDataset(connection, commandType, commandText, (MySqlParameter[])null);
        }

        /// <summary>
        /// Execute an MySqlCommand (that returns a resultset) against the specified MySqlConnection
        /// using the provided parameters.
        /// </summary>
        /// <remarks>
        /// e.g.:
        ///  DataSet ds = ExecuteDataset(conn, CommandType.StoredProcedure, "GetOrders", new MySqlParameter("@prodid", 24));
        /// </remarks>
        /// <param name="connection">a valid MySqlConnection</param>
        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
        /// <param name="commandText">the stored procedure name or PL/SQL command</param>
        /// <param name="commandParameters">an array of MySqlParamters used to execute the command</param>
        /// <returns>a dataset containing the resultset generated by the command</returns>
        public static DataSet ExecuteDataset(MySqlConnection connection, CommandType commandType, string commandText, params MySqlParameter[] commandParameters)
        {
            //create a command and prepare it for execution
            MySqlCommand cmd = new MySqlCommand();
            PrepareCommand(cmd, connection, (MySqlTransaction)null, commandType, commandText, commandParameters);

            //create the DataAdapter & DataSet
            MySqlDataAdapter da = new MySqlDataAdapter(cmd);
            DataSet ds = new DataSet();

            //fill the DataSet using default values for DataTable names, etc.
            da.Fill(ds);

            //return the dataset
            return ds;
        }

        /// <summary>
        /// Execute a stored procedure via an MySqlCommand (that returns a resultset) against the specified MySqlConnection
        /// using the provided parameter values.  This method will query the database to discover the parameters for the
        /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
        /// </summary>
        /// <remarks>
        /// This method provides no access to output parameters or the stored procedure's return value parameter.
        ///
        /// e.g.:
        ///  DataSet ds = ExecuteDataset(conn, "GetOrders", 24, 36);
        /// </remarks>
        /// <param name="connection">a valid MySqlConnection</param>
        /// <param name="spName">the name of the stored prcedure</param>
        /// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
        /// <returns>a dataset containing the resultset generated by the command</returns>
        public static DataSet ExecuteDataset(MySqlConnection connection, string spName, params object[] parameterValues)
        {
            //if we got parameter values, we need to figure out where they go
            if ((parameterValues != null) && (parameterValues.Length > 0))
            {
                //pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
                MySqlParameter[] commandParameters = MySqlHelperParameterCache.GetSpParameterSet(connection.ConnectionString, spName);

                //assign the provided values to these parameters based on parameter order
                AssignParameterValues(commandParameters, parameterValues);

                //call the overload that takes an array of MySqlParameters
                return ExecuteDataset(connection, CommandType.StoredProcedure, spName, commandParameters);
            }
            //otherwise we can just call the SP without params
            else
            {
                return ExecuteDataset(connection, CommandType.StoredProcedure, spName);
            }
        }

        /// <summary>
        /// Execute an MySqlCommand (that returns a resultset and takes no parameters) against the provided MySqlTransaction.
        /// </summary>
        /// <remarks>
        /// e.g.:
        ///  DataSet ds = ExecuteDataset(trans, CommandType.StoredProcedure, "GetOrders");
        /// </remarks>
        /// <param name="transaction">a valid MySqlTransaction</param>
        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
        /// <param name="commandText">the stored procedure name or PL/SQL command</param>
        /// <returns>a dataset containing the resultset generated by the command</returns>
        public static DataSet ExecuteDataset(MySqlTransaction transaction, CommandType commandType, string commandText)
        {
            //pass through the call providing null for the set of MySqlParameters
            return ExecuteDataset(transaction, commandType, commandText, (MySqlParameter[])null);
        }

        /// <summary>
        /// Execute an MySqlCommand (that returns a resultset) against the specified MySqlTransaction
        /// using the provided parameters.
        /// </summary>
        /// <remarks>
        /// e.g.:
        ///  DataSet ds = ExecuteDataset(trans, CommandType.StoredProcedure, "GetOrders", new MySqlParameter("@prodid", 24));
        /// </remarks>
        /// <param name="transaction">a valid MySqlTransaction</param>
        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
        /// <param name="commandText">the stored procedure name or PL/SQL command</param>
        /// <param name="commandParameters">an array of MySqlParamters used to execute the command</param>
        /// <returns>a dataset containing the resultset generated by the command</returns>
        public static DataSet ExecuteDataset(MySqlTransaction transaction, CommandType commandType, string commandText, params MySqlParameter[] commandParameters)
        {
            //create a command and prepare it for execution
            MySqlCommand cmd = new MySqlCommand();
            PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters);

            //create the DataAdapter & DataSet
            MySqlDataAdapter da = new MySqlDataAdapter(cmd);
            DataSet ds = new DataSet();

            //fill the DataSet using default values for DataTable names, etc.
            da.Fill(ds);

            //return the dataset
            return ds;
        }

        /// <summary>
        /// Execute a stored procedure via an MySqlCommand (that returns a resultset) against the specified
        /// MySqlTransaction using the provided parameter values.  This method will query the database to discover the parameters for the
        /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
        /// </summary>
        /// <remarks>
        /// This method provides no access to output parameters or the stored procedure's return value parameter.
        ///
        /// e.g.:
        ///  DataSet ds = ExecuteDataset(trans, "GetOrders", 24, 36);
        /// </remarks>
        /// <param name="transaction">a valid MySqlTransaction</param>
        /// <param name="spName">the name of the stored prcedure</param>
        /// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
        /// <returns>a dataset containing the resultset generated by the command</returns>
        public static DataSet ExecuteDataset(MySqlTransaction transaction, string spName, params object[] parameterValues)
        {
            //if we got parameter values, we need to figure out where they go
            if ((parameterValues != null) && (parameterValues.Length > 0))
            {
                //pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
                MySqlParameter[] commandParameters = MySqlHelperParameterCache.GetSpParameterSet(transaction.Connection.ConnectionString, spName);

                //assign the provided values to these parameters based on parameter order
                AssignParameterValues(commandParameters, parameterValues);

                //call the overload that takes an array of MySqlParameters
                return ExecuteDataset(transaction, CommandType.StoredProcedure, spName, commandParameters);
            }
            //otherwise we can just call the SP without params
            else
            {
                return ExecuteDataset(transaction, CommandType.StoredProcedure, spName);
            }
        }

        #endregion ExecuteDataSet

        #region ExecuteReader

        /// <summary>
        /// this enum is used to indicate weather the connection was provided by the caller, or created by MySqlHelper, so that
        /// we can set the appropriate CommandBehavior when calling ExecuteReader()
        /// </summary>
        private enum MySqlConnectionOwnership
        {
            /// <summary>Connection is owned and managed by MySqlHelper</summary>
            Internal,
            /// <summary>Connection is owned and managed by the caller</summary>
            External
        }

        /// <summary>
        /// Create and prepare an MySqlCommand, and call ExecuteReader with the appropriate CommandBehavior.
        /// </summary>
        /// <remarks>
        /// If we created and opened the connection, we want the connection to be closed when the DataReader is closed.
        ///
        /// If the caller provided the connection, we want to leave it to them to manage.
        /// </remarks>
        /// <param name="connection">a valid MySqlConnection, on which to execute this command</param>
        /// <param name="transaction">a valid MySqlTransaction, or 'null'</param>
        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
        /// <param name="commandText">the stored procedure name or PL/SQL command</param>
        /// <param name="commandParameters">an array of MySqlParameters to be associated with the command or 'null' if no parameters are required</param>
        /// <param name="connectionOwnership">indicates whether the connection parameter was provided by the caller, or created by MySqlHelper</param>
        /// <returns>MySqlDataReader containing the results of the command</returns>
        private static MySqlDataReader ExecuteReader(MySqlConnection connection, MySqlTransaction transaction, CommandType commandType, string commandText, MySqlParameter[] commandParameters, MySqlConnectionOwnership connectionOwnership)
        {
            //create a command and prepare it for execution
            MySqlCommand cmd = new MySqlCommand();
            PrepareCommand(cmd, connection, transaction, commandType, commandText, commandParameters);

            //create a reader
            MySqlDataReader dr;

            // call ExecuteReader with the appropriate CommandBehavior
            if (connectionOwnership == MySqlConnectionOwnership.External)
            {
                dr = cmd.ExecuteReader();
            }
            else
            {
                dr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
            }

            return dr;
        }

        /// <summary>
        /// Execute an MySqlCommand (that returns a resultset and takes no parameters) against the database specified in
        /// the connection string.
        /// </summary>
        /// <remarks>
        /// e.g.:
        ///  MySqlDataReader dr = ExecuteReader(connString, CommandType.StoredProcedure, "GetOrders");
        /// </remarks>
        /// <param name="connectionString">a valid connection string for an MySqlConnection</param>
        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
        /// <param name="commandText">the stored procedure name or PL/SQL command</param>
        /// <returns>an MySqlDataReader containing the resultset generated by the command</returns>
        public static MySqlDataReader ExecuteReader(string connectionString, CommandType commandType, string commandText)
        {
            //pass through the call providing null for the set of MySqlParameters
            return ExecuteReader(connectionString, commandType, commandText, (MySqlParameter[])null);
        }

        /// <summary>
        /// Execute an MySqlCommand (that returns a resultset) against the database specified in the connection string
        /// using the provided parameters.
        /// </summary>
        /// <remarks>
        /// e.g.:
        ///  MySqlDataReader dr = ExecuteReader(connString, CommandType.StoredProcedure, "GetOrders", new MySqlParameter("@prodid", 24));
        /// </remarks>
        /// <param name="connectionString">a valid connection string for an MySqlConnection</param>
        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
        /// <param name="commandText">the stored procedure name or PL/SQL command</param>
        /// <param name="commandParameters">an array of MySqlParameters used to execute the command</param>
        /// <returns>an MySqlDataReader containing the resultset generated by the command</returns>
        public static MySqlDataReader ExecuteReader(string connectionString, CommandType commandType, string commandText, params MySqlParameter[] commandParameters)
        {
            //create & open an MySqlbConnection
            MySqlConnection cn = new MySqlConnection(connectionString);
            cn.Open();

            try
            {
                //call the private overload that takes an internally owned connection in place of the connection string
                return ExecuteReader(cn, null, commandType, commandText, commandParameters, MySqlConnectionOwnership.Internal);
            }
            catch
            {
                //if we fail to return the MySqlDataReader, we neeed to close the connection ourselves
                cn.Close();
                throw;
            }
        }

        /// <summary>
        /// Execute a stored procedure via an MySqlCommand (that returns a resultset) against the database specified in
        /// the connection string using the provided parameter values.  This method will query the database to discover the parameters for the
        /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
        /// </summary>
        /// <remarks>
        /// This method provides no access to output parameters or the stored procedure's return value parameter.
        ///
        /// e.g.:
        ///  MySqlDataReader dr = ExecuteReader(connString, "GetOrders", 24, 36);
        /// </remarks>
        /// <param name="connectionString">a valid connection string for an MySqlConnection</param>
        /// <param name="spName">the name of the stored prcedure</param>
        /// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
        /// <returns>an MySqlDataReader containing the resultset generated by the command</returns>
        public static MySqlDataReader ExecuteReader(string connectionString, string spName, params object[] parameterValues)
        {
            //if we got parameter values, we need to figure out where they go
            if ((parameterValues != null) && (parameterValues.Length > 0))
            {
                //pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache)
                MySqlParameter[] commandParameters = MySqlHelperParameterCache.GetSpParameterSet(connectionString, spName);

                //assign the provided values to these parameters based on parameter order
                AssignParameterValues(commandParameters, parameterValues);

                //call the overload that takes an array of MySqlParameters
                return ExecuteReader(connectionString, CommandType.StoredProcedure, spName, commandParameters);
            }
            //otherwise we can just call the SP without params
            else
            {
                return ExecuteReader(connectionString, CommandType.StoredProcedure, spName);
            }
        }

        /// <summary>
        /// Execute an MySqlCommand (that returns a resultset and takes no parameters) against the provided MySqlConnection.
        /// </summary>
        /// <remarks>
        /// e.g.:
        ///  MySqlDataReader dr = ExecuteReader(conn, CommandType.StoredProcedure, "GetOrders");
        /// </remarks>
        /// <param name="connection">a valid MySqlConnection</param>
        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
        /// <param name="commandText">the stored procedure name or PL/SQL command</param>
        /// <returns>an MySqlDataReader containing the resultset generated by the command</returns>
        public static MySqlDataReader ExecuteReader(MySqlConnection connection, CommandType commandType, string commandText)
        {
            //pass through the call providing null for the set of MySqlParameters
            return ExecuteReader(connection, commandType, commandText, (MySqlParameter[])null);
        }

        /// <summary>
        /// Execute an MySqlCommand (that returns a resultset) against the specified MySqlConnection
        /// using the provided parameters.
        /// </summary>
        /// <remarks>
        /// e.g.:
        ///  MySqlDataReader dr = ExecuteReader(conn, CommandType.StoredProcedure, "GetOrders", new MySqlParameter("@prodid", 24));
        /// </remarks>
        /// <param name="connection">a valid MySqlConnection</param>
        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
        /// <param name="commandText">the stored procedure name or PL/SQL command</param>
        /// <param name="commandParameters">an array of MySqlParamters used to execute the command</param>
        /// <returns>an MySqlDataReader containing the resultset generated by the command</returns>
        public static MySqlDataReader ExecuteReader(MySqlConnection connection, CommandType commandType, string commandText, params MySqlParameter[] commandParameters)
        {
            //pass through the call to the private overload using a null transaction value and an externally owned connection
            return ExecuteReader(connection, (MySqlTransaction)null, commandType, commandText, commandParameters, MySqlConnectionOwnership.External);
        }

        /// <summary>
        /// Execute a stored procedure via an MySqlCommand (that returns a resultset) against the specified MySqlConnection
        /// using the provided parameter values.  This method will query the database to discover the parameters for the
        /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
        /// </summary>
        /// <remarks>
        /// This method provides no access to output parameters or the stored procedure's return value parameter.
        ///
        /// e.g.:
        ///  MySqlDataReader dr = ExecuteReader(conn, "GetOrders", 24, 36);
        /// </remarks>
        /// <param name="connection">a valid MySqlConnection</param>
        /// <param name="spName">the name of the stored procedure</param>
        /// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
        /// <returns>an MySqlDataReader containing the resultset generated by the command</returns>
        public static MySqlDataReader ExecuteReader(MySqlConnection connection, string spName, params object[] parameterValues)
        {
            //if we got parameter values, we need to figure out where they go
            if ((parameterValues != null) && (parameterValues.Length > 0))
            {
                MySqlParameter[] commandParameters = MySqlHelperParameterCache.GetSpParameterSet(connection.ConnectionString, spName);

                AssignParameterValues(commandParameters, parameterValues);

                return ExecuteReader(connection, CommandType.StoredProcedure, spName, commandParameters);
            }
            //otherwise we can just call the SP without params
            else
            {
                return ExecuteReader(connection, CommandType.StoredProcedure, spName);
            }
        }

        /// <summary>
        /// Execute an MySqlCommand (that returns a resultset and takes no parameters) against the provided MySqlTransaction.
        /// </summary>
        /// <remarks>
        /// e.g.:
        ///  MySqlDataReader dr = ExecuteReader(trans, CommandType.StoredProcedure, "GetOrders");
        /// </remarks>
        /// <param name="transaction">a valid MySqlTransaction</param>
        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
        /// <param name="commandText">the stored procedure name or PL/SQL command</param>
        /// <returns>an MySqlDataReader containing the resultset generated by the command</returns>
        public static MySqlDataReader ExecuteReader(MySqlTransaction transaction, CommandType commandType, string commandText)
        {
            //pass through the call providing null for the set of MySqlParameters
            return ExecuteReader(transaction, commandType, commandText, (MySqlParameter[])null);
        }

        /// <summary>
        /// Execute an MySqlCommand (that returns a resultset) against the specified MySqlTransaction
        /// using the provided parameters.
        /// </summary>
        /// <remarks>
        /// e.g.:
        ///   MySqlDataReader dr = ExecuteReader(trans, CommandType.StoredProcedure, "GetOrders", new MySqlParameter("@prodid", 24));
        /// </remarks>
        /// <param name="transaction">a valid MySqlTransaction</param>
        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
        /// <param name="commandText">the stored procedure name or PL/SQL command</param>
        /// <param name="commandParameters">an array of MySqlParameters used to execute the command</param>
        /// <returns>an MySqlDataReader containing the resultset generated by the command</returns>
        public static MySqlDataReader ExecuteReader(MySqlTransaction transaction, CommandType commandType, string commandText, params MySqlParameter[] commandParameters)
        {
            //pass through to private overload, indicating that the connection is owned by the caller
            return ExecuteReader(transaction.Connection, transaction, commandType, commandText, commandParameters, MySqlConnectionOwnership.External);
        }

        /// <summary>
        /// Execute a stored procedure via an MySqlCommand (that returns a resultset) against the specified
        /// MySqlTransaction using the provided parameter values.  This method will query the database to discover the parameters for the
        /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
        /// </summary>
        /// <remarks>
        /// This method provides no access to output parameters or the stored procedure's return value parameter.
        ///
        /// e.g.:
        ///  MySqlDataReader dr = ExecuteReader(trans, "GetOrders", 24, 36);
        /// </remarks>
        /// <param name="transaction">a valid MySqlTransaction</param>
        /// <param name="spName">the name of the stored prcedure</param>
        /// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
        /// <returns>an MySqlDataReader containing the resultset generated by the command</returns>
        public static MySqlDataReader ExecuteReader(MySqlTransaction transaction, string spName, params object[] parameterValues)
        {
            //if we got parameter values, we need to figure out where they go
            if ((parameterValues != null) && (parameterValues.Length > 0))
            {
                MySqlParameter[] commandParameters = MySqlHelperParameterCache.GetSpParameterSet(transaction.Connection.ConnectionString, spName);

                AssignParameterValues(commandParameters, parameterValues);

                return ExecuteReader(transaction, CommandType.StoredProcedure, spName, commandParameters);
            }
            //otherwise we can just call the SP without params
            else
            {
                return ExecuteReader(transaction, CommandType.StoredProcedure, spName);
            }
        }

        #endregion ExecuteReader

        #region ExecuteScalar

        /// <summary>
        /// Execute a MySqlCommand (that returns a 1x1 resultset and takes no parameters) against the database specified in
        /// the connection string.
        /// </summary>
        /// <remarks>
        /// e.g.:
        ///  int orderCount = (int)ExecuteScalar(connString, CommandType.StoredProcedure, "GetOrderCount");
        /// </remarks>
        /// <param name="connectionString">a valid connection string for a MySqlConnection</param>
        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
        /// <param name="commandText">the stored procedure name or T-MySql command</param>
        /// <returns>an object containing the value in the 1x1 resultset generated by the command</returns>
        public static object ExecuteScalar(string connectionString, CommandType commandType, string commandText)
        {
            //pass through the call providing null for the set of MySqlParameters
            return ExecuteScalar(connectionString, commandType, commandText, (MySqlParameter[])null);
        }

        /// <summary>
        /// Execute a MySqlCommand (that returns a 1x1 resultset) against the database specified in the connection string
        /// using the provided parameters.
        /// </summary>
        /// <remarks>
        /// e.g.:
        ///  int orderCount = (int)ExecuteScalar(connString, CommandType.StoredProcedure, "GetOrderCount", new MySqlParameter("@prodid", 24));
        /// </remarks>
        /// <param name="connectionString">a valid connection string for a MySqlConnection</param>
        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
        /// <param name="commandText">the stored procedure name or T-MySql command</param>
        /// <param name="commandParameters">an array of MySqlParamters used to execute the command</param>
        /// <returns>an object containing the value in the 1x1 resultset generated by the command</returns>
        public static object ExecuteScalar(string connectionString, CommandType commandType, string commandText, params MySqlParameter[] commandParameters)
        {
            //create & open a MySqlConnection, and dispose of it after we are done.
            using (MySqlConnection cn = new MySqlConnection(connectionString))
            {
                cn.Open();

                //call the overload that takes a connection in place of the connection string
                return ExecuteScalar(cn, commandType, commandText, commandParameters);
            }
        }

        /// <summary>
        /// Execute a stored procedure via a MySqlCommand (that returns a 1x1 resultset) against the database specified in
        /// the conneciton string using the provided parameter values.  This method will query the database to discover the parameters for the
        /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
        /// </summary>
        /// <remarks>
        /// This method provides no access to output parameters or the stored procedure's return value parameter.
        ///
        /// e.g.:
        ///  int orderCount = (int)ExecuteScalar(connString, "GetOrderCount", 24, 36);
        /// </remarks>
        /// <param name="connectionString">a valid connection string for a MySqlConnection</param>
        /// <param name="spName">the name of the stored prcedure</param>
        /// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
        /// <returns>an object containing the value in the 1x1 resultset generated by the command</returns>
        public static object ExecuteScalar(string connectionString, string spName, params object[] parameterValues)
        {
            //if we got parameter values, we need to figure out where they go
            if ((parameterValues != null) && (parameterValues.Length > 0))
            {
                //pull the parameters for this stored procedure from the parameter cache (or discover them & populet the cache)
                MySqlParameter[] commandParameters = MySqlHelperParameterCache.GetSpParameterSet(connectionString, spName);

                //assign the provided values to these parameters based on parameter order
                AssignParameterValues(commandParameters, parameterValues);

                //call the overload that takes an array of MySqlParameters
                return ExecuteScalar(connectionString, CommandType.StoredProcedure, spName, commandParameters);
            }
            //otherwise we can just call the SP without params
            else
            {
                return ExecuteScalar(connectionString, CommandType.StoredProcedure, spName);
            }
        }

        /// <summary>
        /// Execute a MySqlCommand (that returns a 1x1 resultset and takes no parameters) against the provided MySqlConnection.
        /// </summary>
        /// <remarks>
        /// e.g.:
        ///  int orderCount = (int)ExecuteScalar(conn, CommandType.StoredProcedure, "GetOrderCount");
        /// </remarks>
        /// <param name="connection">a valid MySqlConnection</param>
        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
        /// <param name="commandText">the stored procedure name or T-MySql command</param>
        /// <returns>an object containing the value in the 1x1 resultset generated by the command</returns>
        public static object ExecuteScalar(MySqlConnection connection, CommandType commandType, string commandText)
        {
            //pass through the call providing null for the set of MySqlParameters
            return ExecuteScalar(connection, commandType, commandText, (MySqlParameter[])null);
        }

        /// <summary>
        /// Execute a MySqlCommand (that returns a 1x1 resultset) against the specified MySqlConnection
        /// using the provided parameters.
        /// </summary>
        /// <remarks>
        /// e.g.:
        ///  int orderCount = (int)ExecuteScalar(conn, CommandType.StoredProcedure, "GetOrderCount", new MySqlParameter("@prodid", 24));
        /// </remarks>
        /// <param name="connection">a valid MySqlConnection</param>
        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
        /// <param name="commandText">the stored procedure name or T-MySql command</param>
        /// <param name="commandParameters">an array of MySqlParamters used to execute the command</param>
        /// <returns>an object containing the value in the 1x1 resultset generated by the command</returns>
        public static object ExecuteScalar(MySqlConnection connection, CommandType commandType, string commandText, params MySqlParameter[] commandParameters)
        {
            //create a command and prepare it for execution
            MySqlCommand cmd = new MySqlCommand();
            PrepareCommand(cmd, connection, (MySqlTransaction)null, commandType, commandText, commandParameters);

            //execute the command & return the results
            return cmd.ExecuteScalar();
        }

        /// <summary>
        /// Execute a stored procedure via a MySqlCommand (that returns a 1x1 resultset) against the specified MySqlConnection
        /// using the provided parameter values.  This method will query the database to discover the parameters for the
        /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
        /// </summary>
        /// <remarks>
        /// This method provides no access to output parameters or the stored procedure's return value parameter.
        ///
        /// e.g.:
        ///  int orderCount = (int)ExecuteScalar(conn, "GetOrderCount", 24, 36);
        /// </remarks>
        /// <param name="connection">a valid MySqlConnection</param>
        /// <param name="spName">the name of the stored prcedure</param>
        /// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
        /// <returns>an object containing the value in the 1x1 resultset generated by the command</returns>
        public static object ExecuteScalar(MySqlConnection connection, string spName, params object[] parameterValues)
        {
            //if we got parameter values, we need to figure out where they go
            if ((parameterValues != null) && (parameterValues.Length > 0))
            {
                //pull the parameters for this stored procedure from the parameter cache (or discover them & populet the cache)
                MySqlParameter[] commandParameters = MySqlHelperParameterCache.GetSpParameterSet(connection.ConnectionString, spName);

                //assign the provided values to these parameters based on parameter order
                AssignParameterValues(commandParameters, parameterValues);

                //call the overload that takes an array of MySqlParameters
                return ExecuteScalar(connection, CommandType.StoredProcedure, spName, commandParameters);
            }
            //otherwise we can just call the SP without params
            else
            {
                return ExecuteScalar(connection, CommandType.StoredProcedure, spName);
            }
        }

        /// <summary>
        /// Execute a MySqlCommand (that returns a 1x1 resultset and takes no parameters) against the provided MySqlTransaction.
        /// </summary>
        /// <remarks>
        /// e.g.:
        ///  int orderCount = (int)ExecuteScalar(trans, CommandType.StoredProcedure, "GetOrderCount");
        /// </remarks>
        /// <param name="transaction">a valid MySqlTransaction</param>
        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
        /// <param name="commandText">the stored procedure name or T-MySql command</param>
        /// <returns>an object containing the value in the 1x1 resultset generated by the command</returns>
        public static object ExecuteScalar(MySqlTransaction transaction, CommandType commandType, string commandText)
        {
            //pass through the call providing null for the set of MySqlParameters
            return ExecuteScalar(transaction, commandType, commandText, (MySqlParameter[])null);
        }

        /// <summary>
        /// Execute a MySqlCommand (that returns a 1x1 resultset) against the specified MySqlTransaction
        /// using the provided parameters.
        /// </summary>
        /// <remarks>
        /// e.g.:
        ///  int orderCount = (int)ExecuteScalar(trans, CommandType.StoredProcedure, "GetOrderCount", new MySqlParameter("@prodid", 24));
        /// </remarks>
        /// <param name="transaction">a valid MySqlTransaction</param>
        /// <param name="commandType">the CommandType (stored procedure, text, etc.)</param>
        /// <param name="commandText">the stored procedure name or T-MySql command</param>
        /// <param name="commandParameters">an array of MySqlParamters used to execute the command</param>
        /// <returns>an object containing the value in the 1x1 resultset generated by the command</returns>
        public static object ExecuteScalar(MySqlTransaction transaction, CommandType commandType, string commandText, params MySqlParameter[] commandParameters)
        {
            //create a command and prepare it for execution
            MySqlCommand cmd = new MySqlCommand();
            PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters);

            //execute the command & return the results
            return cmd.ExecuteScalar();

        }

        /// <summary>
        /// Execute a stored procedure via a MySqlCommand (that returns a 1x1 resultset) against the specified
        /// MySqlTransaction using the provided parameter values.  This method will query the database to discover the parameters for the
        /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order.
        /// </summary>
        /// <remarks>
        /// This method provides no access to output parameters or the stored procedure's return value parameter.
        ///
        /// e.g.:
        ///  int orderCount = (int)ExecuteScalar(trans, "GetOrderCount", 24, 36);
        /// </remarks>
        /// <param name="transaction">a valid MySqlTransaction</param>
        /// <param name="spName">the name of the stored prcedure</param>
        /// <param name="parameterValues">an array of objects to be assigned as the input values of the stored procedure</param>
        /// <returns>an object containing the value in the 1x1 resultset generated by the command</returns>
        public static object ExecuteScalar(MySqlTransaction transaction, string spName, params object[] parameterValues)
        {
            //if we got parameter values, we need to figure out where they go
            if ((parameterValues != null) && (parameterValues.Length > 0))
            {
                //pull the parameters for this stored procedure from the parameter cache (or discover them & populet the cache)
                MySqlParameter[] commandParameters = MySqlHelperParameterCache.GetSpParameterSet(transaction.Connection.ConnectionString, spName);

                //assign the provided values to these parameters based on parameter order
                AssignParameterValues(commandParameters, parameterValues);

                //call the overload that takes an array of MySqlParameters
                return ExecuteScalar(transaction, CommandType.StoredProcedure, spName, commandParameters);
            }
            //otherwise we can just call the SP without params
            else
            {
                return ExecuteScalar(transaction, CommandType.StoredProcedure, spName);
            }
        }

        #endregion ExecuteScalar
    }
    /// <summary>
    /// MySqlHelperParameterCache provides functions to leverage a static cache of procedure parameters, and the
    /// ability to discover parameters for stored procedures at run-time.
    /// </summary>
    public sealed class MySqlHelperParameterCache
    {
        #region private methods, variables, and constructors

        //Since this class provides only static methods, make the default constructor private to prevent
        //instances from being created with "new MySqlHelperParameterCache()".
        private MySqlHelperParameterCache() { }

        private static Hashtable paramCache = Hashtable.Synchronized(new Hashtable());

        /// <summary>
        /// resolve at run-time the appropriate set of MySqlParameters for a stored procedure
        /// </summary>
        /// <param name="connectionString">a valid connection string for a MySqlConnection</param>
        /// <param name="spName">the name of the stored prcedure</param>
        /// <param name="includeReturnValueParameter">weather or not to onclude ther return value parameter</param>
        /// <returns></returns>
        private static MySqlParameter[] DiscoverSpParameterSet(string connectionString, string spName, bool includeReturnValueParameter)
        {
            using (MySqlConnection cn = new MySqlConnection(connectionString))
            using (MySqlCommand cmd = new MySqlCommand(spName, cn))
            {
                cn.Open();
                cmd.CommandType = CommandType.StoredProcedure;

                MySqlCommandBuilder.DeriveParameters(cmd);

                if (!includeReturnValueParameter)
                {
                    if (ParameterDirection.ReturnValue == cmd.Parameters[0].Direction)
                        cmd.Parameters.RemoveAt(0);
                }

                MySqlParameter[] discoveredParameters = new MySqlParameter[cmd.Parameters.Count];

                cmd.Parameters.CopyTo(discoveredParameters, 0);

                return discoveredParameters;
            }
        }

        //deep copy of cached MySqlParameter array
        private static MySqlParameter[] CloneParameters(MySqlParameter[] originalParameters)
        {
            MySqlParameter[] clonedParameters = new MySqlParameter[originalParameters.Length];

            for (int i = 0, j = originalParameters.Length; i < j; i++)
            {
                clonedParameters[i] = (MySqlParameter)((ICloneable)originalParameters[i]).Clone();
            }

            return clonedParameters;
        }

        #endregion private methods, variables, and constructors

        #region caching functions

        /// <summary>
        /// add parameter array to the cache
        /// </summary>
        /// <param name="connectionString">a valid connection string for an MySqlConnection</param>
        /// <param name="commandText">the stored procedure name or T-MySql command</param>
        /// <param name="commandParameters">an array of MySqlParamters to be cached</param>
        public static void CacheParameterSet(string connectionString, string commandText, params MySqlParameter[] commandParameters)
        {
            string hashKey = connectionString + ":" + commandText;

            paramCache[hashKey] = commandParameters;
        }

        /// <summary>
        /// retrieve a parameter array from the cache
        /// </summary>
        /// <param name="connectionString">a valid connection string for a MySqlConnection</param>
        /// <param name="commandText">the stored procedure name or T-MySql command</param>
        /// <returns>an array of MySqlParameters</returns>
        public static MySqlParameter[] GetCachedParameterSet(string connectionString, string commandText)
        {
            string hashKey = connectionString + ":" + commandText;

            MySqlParameter[] cachedParameters = (MySqlParameter[])paramCache[hashKey];

            if (cachedParameters == null)
            {
                return null;
            }
            else
            {
                return CloneParameters(cachedParameters);
            }
        }

        #endregion caching functions

        #region Parameter Discovery Functions

        /// <summary>
        /// Retrieves the set of MySqlParameters appropriate for the stored procedure
        /// </summary>
        /// <remarks>
        /// This method will query the database for this information, and then store it in a cache for future requests.
        /// </remarks>
        /// <param name="connectionString">a valid connection string for a MySqlConnection</param>
        /// <param name="spName">the name of the stored prcedure</param>
        /// <returns>an array of MySqlParameters</returns>
        public static MySqlParameter[] GetSpParameterSet(string connectionString, string spName)
        {
            return GetSpParameterSet(connectionString, spName, true);
        }

        /// <summary>
        /// Retrieves the set of MySqlParameters appropriate for the stored procedure
        /// </summary>
        /// <remarks>
        /// This method will query the database for this information, and then store it in a cache for future requests.
        /// </remarks>
        /// <param name="connectionString">a valid connection string for an MySqlConnection</param>
        /// <param name="spName">the name of the stored procedure</param>
        /// <param name="includeReturnValueParameter">a bool value indicating weather the return value parameter should be included in the results</param>
        /// <returns>an array of MySqlParameters</returns>
        public static MySqlParameter[] GetSpParameterSet(string connectionString, string spName, bool includeReturnValueParameter)
        {
            string hashKey = connectionString + ":" + spName + (includeReturnValueParameter ? ":include ReturnValue Parameter" : "");

            MySqlParameter[] cachedParameters;

            cachedParameters = (MySqlParameter[])paramCache[hashKey];

            if (cachedParameters == null)
            {
                cachedParameters = (MySqlParameter[])(paramCache[hashKey] = DiscoverSpParameterSet(connectionString, spName, includeReturnValueParameter));
            }

            return CloneParameters(cachedParameters);
        }

        #endregion Parameter Discovery Functions

    }
}

3、配置config字符串

<appSettings>

    <add key="MySqlConnString" value="Data Source=192.168.2.98;User Id=root;Password=123456;Database=test2;CharSet=utf8;AllowUserVariables=True;" />

  </appSettings>

4、程序里写代码

DataTable dt = new DataTable();
            dt.Columns.Add("name", typeof(string));
            for (int i = 0; i < 10; i++)
            {
                DataRow dr = dt.NewRow();
                dr["name"] = "hh" + i.ToString();
                dt.Rows.Add(dr);
            }

            bool isExistValidFile = false;
            StringBuilder ExternalIDs = new StringBuilder();

            #region load data infile

            string filename = "";
            if (System.Environment.CurrentDirectory + "\\" == AppDomain.CurrentDomain.BaseDirectory) { filename = AppDomain.CurrentDomain.BaseDirectory + Guid.NewGuid().ToString().ToUpper().Replace("-", "") + ".txt"; }
            else { filename = AppDomain.CurrentDomain.BaseDirectory + @"Bin\" + Guid.NewGuid().ToString().ToUpper().Replace("-", "") + ".txt"; }

            using (System.IO.FileStream fs = new System.IO.FileStream(filename, System.IO.FileMode.Append, System.IO.FileAccess.Write, System.IO.FileShare.Read))
            {
                using (System.IO.StreamWriter sw = new System.IO.StreamWriter(fs, Encoding.Default))
                {
                    foreach (DataRow drObj in dt.Rows)
                    {
                        sw.WriteLine(drObj["name"]);
                        isExistValidFile = true;
                    }
                    sw.Close();
                }
                fs.Close();
                GC.Collect();
            }
            if (isExistValidFile)
            {
                if (System.IO.File.Exists(filename))
                {
                    #region 提交数据库

                    StringBuilder loadDataSql = new StringBuilder();
                    loadDataSql.Append("LOAD DATA LOCAL INFILE '" + @filename.Replace("\\", "/") + "' INTO TABLE student CHARACTER SET GBK FIELDS TERMINATED BY '|' ");
                    loadDataSql.Append("(name)");

                    using (MySql.Data.MySqlClient.MySqlConnection con = new MySql.Data.MySqlClient.MySqlConnection(MySqlHelper.ConnectionString))
                    {
                        con.Open();
                        MySql.Data.MySqlClient.MySqlTransaction st = con.BeginTransaction(IsolationLevel.ReadUncommitted);
                        try
                        {
                            MySqlHelper.ExecuteNonQuery(st, CommandType.Text, loadDataSql.ToString());
                            st.Commit();
                            GC.Collect();
                        }
                        catch (Exception ex)
                        {
                            StringBuilder tmpError = new StringBuilder();
                            tmpError.Append(ex.TargetSite).Append("\r\n" + ex.StackTrace).Append("\r\n" + ex.InnerException).Append("\r\n" + ex.Source).Append("\r\n" + ex.Message);
                            st.Rollback();
                        }
                        finally { if (con != null) { con.Close(); con.Dispose(); } if (!string.IsNullOrEmpty(filename)) { System.IO.File.Delete(filename); } }
                    }

                    #endregion
                }
                else {  }
            }
            else {  }

            #endregion