unity中鏈接MySQL數據庫的方法封裝

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


public class DatabaseManager : CSingleton<DatabaseManager>
{
    protected static string m_databaseIP = "localhost";         //IP地址
    protected static string m_databasePort = "3306";            //端口號

    protected static string m_userID = "root";                  //MySQL數據庫用戶名
    protected static string m_password = "123456";              //MySQL登錄密碼
    protected static string m_databaseName = "crh_emergency";   //連接的數據庫的庫名


    protected static string m_connectionString;                 // 數據庫鏈接字符串


    /// <summary>
    /// 測試是否連接上數據庫
    /// </summary>
    /// <returns></returns>
    public bool TestConnection()
    {
        bool isConnected = true;
        //發送數據庫鏈接字段 建立鏈接通道
        using (MySqlConnection connection = new MySqlConnection(m_connectionString))
        {
            try
            {
                //打開鏈接通道
                connection.Open();
            }
            catch (MySqlException E)
            {
                //若是有異常 則鏈接失敗
                isConnected = false;
                throw new Exception(E.Message);
            }
            finally
            {
                //關閉鏈接通道
                connection.Close();
            }
        }

        return isConnected;
    }

    /// <summary>
    /// 利用字符串組拼方式來編寫數據庫的鏈接
    /// </summary>
    public static void Init()
    {
        m_connectionString = string.Format("Server = {0}; port = {1}; Database = {2}; User ID = {3}; Password = {4}; Pooling=true; Charset = utf8;", m_databaseIP, m_databasePort, m_databaseName, m_userID, m_password);
    }

  
    /// <summary>
    /// 建立表
    /// </summary>
    /// <param name="name">表名</param>
    /// <param name="cols">字段名</param>
    /// <param name="colType">字段類型</param>
    /// <returns></returns>
    public static int CreateTable(string name, string[] cols, string[] colType)
    {
        if (cols.Length != colType.Length)
        {
            throw new Exception("columns.Length != colType.Length");
        }

        string query = "CREATE TABLE " + name + " (" + cols[0] + " " + colType[0];

        for (int i = 1; i < cols.Length; ++i)
        {
            query += ", " + cols[i] + " " + colType[i];
        }

        query += ")";

        return ExecuteNonQuery(query);
    }


    /// <summary>
    /// 建立表默認ID自動增加
    /// </summary>
    /// <param name="name">表名</param>
    /// <param name="cols">字段名</param>
    /// <param name="colType">字段類型</param>
    /// <returns></returns>
    public static int CreateTableAutoID(string name, string[] cols, string[] colType)
    {
        if (cols.Length != colType.Length)
        {
            throw new Exception("columns.Length != colType.Length");
        }

        string query = "CREATE TABLE " + name + " (" + cols[0] + " " + colType[0] + " NOT NULL AUTO_INCREMENT";

        for (int i = 1; i < cols.Length; ++i)
        {
            query += ", " + cols[i] + " " + colType[i];
        }

        query += ", PRIMARY KEY (" + cols[0] + ")" + ")";

        return ExecuteNonQuery(query);
    }

    /// <summary>
    /// 插入一條數據，包括全部，不適用自動累加ID。
    /// </summary>
    /// <param name="tableName">表名</param>
    /// <param name="values"></param>
    /// <returns></returns>
    public static int InsertInto(string tableName, string[] values)
    {
        string query = "INSERT INTO " + tableName + " VALUES (" + "'" + values[0] + "'";

        for (int i = 1; i < values.Length; ++i)
        {
            query += ", " + "'" + values[i] + "'";
        }

        query += ")";

        return ExecuteNonQuery(query);
    }

    /// <summary>
    /// 插入部分ID
    /// </summary>
    /// <param name="tableName">表名</param>
    /// <param name="cols"></param>
    /// <param name="values"></param>
    /// <returns></returns>
    public static int InsertInto(string tableName, string[] cols, string[] values)
    {
        if (cols.Length != values.Length)
        {
            throw new Exception("columns.Length != colType.Length");
        }

        string query = "INSERT INTO " + tableName + " (" + cols[0];
        for (int i = 1; i < cols.Length; ++i)
        {
            query += ", " + cols[i];
        }

        query += ") VALUES (" + "'" + values[0] + "'";
        for (int i = 1; i < values.Length; ++i)
        {
            query += ", " + "'" + values[i] + "'";
        }

        query += ")";

        return ExecuteNonQuery(query);
    }

    /// <summary>
    /// 當指定字段知足必定條件時，更新指定字段的數據
    /// 例如更新在user這個表中字段名爲userAccount的值等於10086時，將對應userPwd字段的值改爲newMd5SumPassword
    /// ("users", new string[] { "userPwd" }, new string[] { newMd5SumPassword }, "userAccount", "10086")
    /// </summary>
    /// <param name="tableName">表名</param>
    /// <param name="cols">字段</param>
    /// <param name="colsValues">字段值</param>
    /// <param name="selectKey">指定的字段</param>
    /// <param name="selectValue">指定字段知足的條件</param>
    /// <returns></returns>
    public static int UpdateInto(string tableName, string[] cols, string[] colsValues, string selectKey, string selectValue)
    {
        string query = "UPDATE " + tableName + " SET " + cols[0] + " = " + "'" + colsValues[0] + "'";

        for (int i = 1; i < colsValues.Length; ++i)
        {
            query += ", " + cols[i] + " =" + "'" + colsValues[i] + "'";
        }

        query += " WHERE " + selectKey + " = " + selectValue;

        return ExecuteNonQuery(query);
    }

    /// <summary>
    /// 刪除
    /// </summary>
    /// <param name="tableName">表名</param>
    /// <param name="cols">字段</param>
    /// <param name="colsValues">字段值</param>
    /// <returns></returns>
    public static int Delete(string tableName, string[] cols, string[] colsValues)
    {
        string query = "DELETE FROM " + tableName + " WHERE " + cols[0] + " = " + colsValues[0];

        for (int i = 1; i < colsValues.Length; ++i)
        {
            query += " or " + cols[i] + " = " + colsValues[i];
        }
        return ExecuteNonQuery(query);
    }

    /// <summary>
    /// 查詢指定字段數據中知足條件的
    /// DataSet內存中的數據庫，DataSet是不依賴於數據庫的獨立數據集合,是一種不包含表頭的純數據文件
    /// 有條件的查詢，查詢在users這個表當中，只須要字段名爲userAccount，userPwd，userName，ID這幾個字段對應的數據，
    /// 知足條件爲 userAccount對應的value=account， userPwd對應的value=md5Password；
    /// ("users", new string[] { "userAccount", "userPwd", "userName", "ID" }, new string[] { "userAccount", "userPwd" }, new string[] { "=", "=" }, new string[] { account, md5Password });
    /// </summary>
    /// <param name="tableName">表名</param>
    /// <param name="items">字段名</param>
    /// <param name="cols">字段名</param>
    /// <param name="operations">條件運算符</param>
    /// <param name="values">知足的條件值</param>
    /// <returns></returns>
    public static DataSet SelectWhere(string tableName, string[] items, string[] cols, string[] operations, string[] values)
    {
        if (cols.Length != operations.Length || operations.Length != values.Length)
        {
            throw new Exception("col.Length != operation.Length != values.Length");
        }

        string query = "SELECT " + items[0];

        for (int i = 1; i < items.Length; ++i)
        {
            query += ", " + items[i];
        }

        query += " FROM " + tableName + " WHERE " + cols[0] + operations[0] + "'" + values[0] + "' ";

        for (int i = 1; i < cols.Length; ++i)
        {
            query += " AND " + cols[i] + operations[i] + "'" + values[i] + "' ";
        }

        return ExecuteQuery(query);
    }
    /// <summary>
    /// 查詢指定字段
    /// </summary>
    /// <param name="tableName">表名</param>
    /// <param name="items">字段名</param>
    /// <returns></returns>
    public static DataSet Select(string tableName, string[] items)
    {
        string query = "SELECT " + items[0];

        for (int i = 1; i < items.Length; ++i)
        {
            query += ", " + items[i];
        }

        query += " FROM " + tableName;

        return ExecuteQuery(query);
    }

    /// <summary>
    /// 查詢全部字段
    /// </summary>
    /// <param name="tableName">表名</param>
    /// <returns></returns>
    public static DataSet Select(string tableName)
    {
        string query = "SELECT * FROM " + tableName;
        return ExecuteQuery(query);
    }

    #region 執行簡單SQL語句

    /// <summary>
    /// 執行SQL語句，返回影響的記錄數。用於Update、Insert和Delete
    /// </summary>
    /// <param name="SQLString">SQL語句</param>
    /// <returns>影響的記錄數</returns>
    public static int ExecuteNonQuery(string SQLString)
    {
        using (MySqlConnection connection = new MySqlConnection(m_connectionString))
        {
            using (MySqlCommand cmd = new MySqlCommand(SQLString, connection))
            {
                try
                {
                    connection.Open();
                    int rows = cmd.ExecuteNonQuery();
                    return rows;
                }
                catch (MySqlException E)
                {
                    throw new Exception(E.Message);
                }
                finally
                {
                    cmd.Dispose();
                    connection.Close();
                }
            }
        }
    }

    /// <summary>
    /// 執行SQL語句，設置命令的執行等待時間
    /// </summary>
    /// <param name="SQLString"></param>
    /// <param name="Times"></param>
    /// <returns></returns>
    public static int ExecuteNonQueryByTime(string SQLString, int Times)
    {
        using (MySqlConnection connection = new MySqlConnection(m_connectionString))
        {
            using (MySqlCommand cmd = new MySqlCommand(SQLString, connection))
            {
                try
                {
                    connection.Open();
                    cmd.CommandTimeout = Times;
                    int rows = cmd.ExecuteNonQuery();
                    return rows;
                }
                catch (MySqlException E)
                {
                    throw new Exception(E.Message);
                }
                finally
                {
                    cmd.Dispose();
                    connection.Close();
                }
            }
        }
    }

    /// <summary>
    /// 執行多條SQL語句，實現數據庫事務。
    /// </summary>
    /// <param name="SQLStringList">多條SQL語句</param>
    public static void ExecuteNonQueryTran(ArrayList SQLStringList)
    {
        using (MySqlConnection conn = new MySqlConnection(m_connectionString))
        {
            conn.Open();
            MySqlCommand cmd = new MySqlCommand();
            cmd.Connection = conn;
            MySqlTransaction tx = conn.BeginTransaction();
            cmd.Transaction = tx;
            try
            {
                for (int n = 0; n < SQLStringList.Count; n++)
                {
                    string strsql = SQLStringList[n].ToString();
                    if (strsql.Trim().Length > 1)
                    {
                        cmd.CommandText = strsql;
                        cmd.ExecuteNonQuery();
                    }
                }
                tx.Commit();
            }
            catch (MySqlException E)
            {
                tx.Rollback();
                throw new Exception(E.Message);
            }
            finally
            {
                cmd.Dispose();
                conn.Close();
            }
        }
    }

    /// <summary>
    /// 執行帶一個存儲過程參數的的SQL語句。
    /// </summary>
    /// <param name="SQLString">SQL語句</param>
    /// <param name="content">參數內容,好比一個字段是格式複雜的文章，有特殊符號，能夠經過這個方式添加</param>
    /// <returns>影響的記錄數</returns>
    public static int ExecuteNonQuery(string SQLString, string content)
    {
        using (MySqlConnection connection = new MySqlConnection(m_connectionString))
        {
            MySqlCommand cmd = new MySqlCommand(SQLString, connection);
            MySqlParameter myParameter = new MySqlParameter("@content", MySqlDbType.Text);
            myParameter.Value = content;
            cmd.Parameters.Add(myParameter);
            try
            {
                connection.Open();
                int rows = cmd.ExecuteNonQuery();
                return rows;
            }
            catch (MySqlException E)
            {
                throw new Exception(E.Message);
            }
            finally
            {
                cmd.Dispose();
                connection.Close();
            }
        }
    }

    /// <summary>
    /// 執行帶一個存儲過程參數的的SQL語句。
    /// </summary>
    /// <param name="SQLString">SQL語句</param>
    /// <param name="content">參數內容,好比一個字段是格式複雜的文章，有特殊符號，能夠經過這個方式添加</param>
    /// <returns>影響的記錄數</returns>
    public static object ExecuteScalar(string SQLString, string content)
    {
        using (MySqlConnection connection = new MySqlConnection(m_connectionString))
        {
            MySqlCommand cmd = new MySqlCommand(SQLString, connection);
            MySqlParameter myParameter = new MySqlParameter("@content", MySqlDbType.Text);
            myParameter.Value = content;
            cmd.Parameters.Add(myParameter);
            try
            {
                connection.Open();
                object obj = cmd.ExecuteScalar();
                if ((System.Object.Equals(obj, null)) || (System.Object.Equals(obj, System.DBNull.Value)))
                {
                    return null;
                }
                else
                {
                    return obj;
                }
            }
            catch (MySqlException E)
            {
                throw new Exception(E.Message);
            }
            finally
            {
                cmd.Dispose();
                connection.Close();
            }
        }
    }

    /// <summary>
    /// 向數據庫裏插入圖像格式的字段(和上面狀況相似的另外一種實例)
    /// </summary>
    /// <param name="strSQL">SQL語句</param>
    /// <param name="fs">圖像字節,數據庫的字段類型爲image的狀況</param>
    /// <returns>影響的記錄數</returns>
    public static int ExecuteNonQueryInsertImg(string strSQL, byte[] fs)
    {
        using (MySqlConnection connection = new MySqlConnection(m_connectionString))
        {
            MySqlCommand cmd = new MySqlCommand(strSQL, connection);
            MySqlParameter myParameter = new MySqlParameter("@fs", MySqlDbType.Binary);
            myParameter.Value = fs;
            cmd.Parameters.Add(myParameter);
            try
            {
                connection.Open();
                int rows = cmd.ExecuteNonQuery();
                return rows;
            }
            catch (MySqlException E)
            {
                throw new Exception(E.Message);
            }
            finally
            {
                cmd.Dispose();
                connection.Close();
            }
        }
    }

    /// <summary>
    /// 執行一條計算查詢結果語句，返回查詢結果（object）。
    /// </summary>
    /// <param name="SQLString">計算查詢結果語句</param>
    /// <returns>查詢結果（object）</returns>
    public static object GetSingle(string SQLString)
    {
        using (MySqlConnection connection = new MySqlConnection(m_connectionString))
        {
            using (MySqlCommand cmd = new MySqlCommand(SQLString, connection))
            {
                try
                {
                    connection.Open();
                    object obj = cmd.ExecuteScalar();
                    if ((System.Object.Equals(obj, null)) || (System.Object.Equals(obj, System.DBNull.Value)))
                    {
                        return null;
                    }
                    else
                    {
                        return obj;
                    }
                }
                catch (MySqlException e)
                {
                    throw new Exception(e.Message);
                }
                finally
                {
                    cmd.Dispose();
                    connection.Close();
                }
            }
        }
    }

    /// <summary>
    /// 執行查詢語句，返回MySqlDataReader(使用該方法切記要手工關閉MySqlDataReader和鏈接)
    /// </summary>
    /// <param name="strSQL">查詢語句</param>
    /// <returns>MySqlDataReader</returns>
    public static MySqlDataReader ExecuteReader(string strSQL)
    {
        MySqlConnection connection = new MySqlConnection(m_connectionString);
        MySqlCommand cmd = new MySqlCommand(strSQL, connection);
        try
        {
            connection.Open();
            MySqlDataReader myReader = cmd.ExecuteReader();
            return myReader;
        }
        catch (MySqlException e)
        {
            throw new Exception(e.Message);
        }
        //finally //不能在此關閉，不然，返回的對象將沒法使用
        //{
        // cmd.Dispose();
        // connection.Close();
        //}
    }

    /// <summary>
    /// 執行查詢語句，返回DataSet
    /// </summary>
    /// <param name="SQLString">查詢語句</param>
    /// <returns>DataSet</returns>
    public static DataSet ExecuteQuery(string SQLString)
    {
        using (MySqlConnection connection = new MySqlConnection(m_connectionString))
        {
            DataSet ds = new DataSet();
            try
            {
                connection.Open();
                MySqlDataAdapter da = new MySqlDataAdapter(SQLString, connection);
                da.Fill(ds);
            }
            catch (MySqlException ex)
            {
                connection.Close();
                throw new Exception(ex.Message);
            }
            finally
            {
                connection.Close();
            }
            return ds;
        }
    }

    /// <summary>
    /// 執行查詢語句，返回DataSet,設置命令的執行等待時間
    /// </summary>
    /// <param name="SQLString"></param>
    /// <param name="Times"></param>
    /// <returns></returns>
    public static DataSet ExecuteQuery(string SQLString, int Times)
    {
        using (MySqlConnection connection = new MySqlConnection(m_connectionString))
        {
            DataSet ds = new DataSet();
            try
            {
                connection.Open();
                MySqlDataAdapter command = new MySqlDataAdapter(SQLString, connection);
                command.SelectCommand.CommandTimeout = Times;
                command.Fill(ds, "ds");
            }
            catch (MySqlException ex)
            {
                throw new Exception(ex.Message);
            }
            finally
            {
                connection.Close();
            }
            return ds;
        }
    }

    /// <summary>
    /// 獲取SQL查詢記錄條數
    /// </summary>
    /// <param name="sqlstr">SQL語句</param>
    /// <returns></returns>
    public static int GetRowsNum(string SQLString)
    {
        using (MySqlConnection connection = new MySqlConnection(m_connectionString))
        {
            DataSet ds = new DataSet();
            try
            {
                connection.Open();
                MySqlDataAdapter command = new MySqlDataAdapter(SQLString, connection);
                command.Fill(ds, "ds");
                return ds.Tables[0].Rows.Count;
            }
            catch (MySqlException ex)
            {
                throw new Exception(ex.Message);
            }
            finally
            {
                connection.Close();
            }
        }
    }

    #endregion 執行簡單SQL語句

    #region 執行帶參數的SQL語句

    /// <summary>
    /// 執行SQL語句，返回影響的記錄數
    /// </summary>
    /// <param name="SQLString">SQL語句</param>
    /// <returns>影響的記錄數</returns>
    public static int ExecuteNonQuery(string SQLString, params System.Object[] cmdParms)
    {
        using (MySqlConnection connection = new MySqlConnection(m_connectionString))
        {
            using (MySqlCommand cmd = new MySqlCommand())
            {
                try
                {
                    PrepareCommand(cmd, connection, null, SQLString, cmdParms);
                    int rows = cmd.ExecuteNonQuery();
                    cmd.Parameters.Clear();
                    return rows;
                }
                catch (MySqlException E)
                {
                    throw new Exception(E.Message);
                }
                finally
                {
                    cmd.Dispose();
                    connection.Close();
                }
            }
        }
    }

    /// <summary>
    /// 執行多條SQL語句，實現數據庫事務。
    /// </summary>
    /// <param name="SQLStringList">SQL語句的哈希表（key爲sql語句，value是該語句的 Object[]）</param>
    public static void ExecuteNonQueryTran(Hashtable SQLStringList)
    {
        using (MySqlConnection conn = new MySqlConnection(m_connectionString))
        {
            conn.Open();
            using (MySqlTransaction trans = conn.BeginTransaction())
            {
                MySqlCommand cmd = new MySqlCommand();
                try
                {
                    //循環
                    foreach (DictionaryEntry myDE in SQLStringList)
                    {
                        string cmdText = myDE.Key.ToString();
                        System.Object[] cmdParms = (System.Object[])myDE.Value;
                        PrepareCommand(cmd, conn, trans, cmdText, cmdParms);
                        int val = cmd.ExecuteNonQuery();
                        cmd.Parameters.Clear();

                        trans.Commit();
                    }
                }
                catch
                {
                    trans.Rollback();
                    throw;
                }
                finally
                {
                    cmd.Dispose();
                    conn.Close();
                }
            }
        }
    }

    /// <summary>
    /// 執行一條計算查詢結果語句，返回查詢結果（object）。
    /// </summary>
    /// <param name="SQLString">計算查詢結果語句</param>
    /// <returns>查詢結果（object）</returns>
    public static object GetSingle(string SQLString, params System.Object[] cmdParms)
    {
        using (MySqlConnection connection = new MySqlConnection(m_connectionString))
        {
            using (MySqlCommand cmd = new MySqlCommand())
            {
                try
                {
                    PrepareCommand(cmd, connection, null, SQLString, cmdParms);
                    object obj = cmd.ExecuteScalar();
                    cmd.Parameters.Clear();
                    if ((System.Object.Equals(obj, null)) || (System.Object.Equals(obj, System.DBNull.Value)))
                    {
                        return null;
                    }
                    else
                    {
                        return obj;
                    }
                }
                catch (MySqlException e)
                {
                    throw new Exception(e.Message);
                }
                finally
                {
                    cmd.Dispose();
                    connection.Close();
                }
            }
        }
    }

    /// <summary>
    /// 執行查詢語句，返回MySqlDataReader (使用該方法切記要手工關閉MySqlDataReader和鏈接)
    /// </summary>
    /// <param name="strSQL">查詢語句</param>
    /// <returns>MySqlDataReader</returns>
    public static MySqlDataReader ExecuteReader(string SQLString, params System.Object[] cmdParms)
    {
        MySqlConnection connection = new MySqlConnection(m_connectionString);
        MySqlCommand cmd = new MySqlCommand();
        try
        {
            PrepareCommand(cmd, connection, null, SQLString, cmdParms);
            MySqlDataReader myReader = cmd.ExecuteReader();
            cmd.Parameters.Clear();
            return myReader;
        }
        catch (MySqlException e)
        {
            throw new Exception(e.Message);
        }
        //finally //不能在此關閉，不然，返回的對象將沒法使用
        //{
        // cmd.Dispose();
        // connection.Close();
        //}
    }

    /// <summary>
    /// 執行查詢語句，返回DataSet
    /// </summary>
    /// <param name="SQLString">查詢語句</param>
    /// <returns>DataSet</returns>
    public static DataSet ExcuteQuery(string SQLString, params System.Object[] cmdParms)
    {
        using (MySqlConnection connection = new MySqlConnection(m_connectionString))
        {
            MySqlCommand cmd = new MySqlCommand();
            PrepareCommand(cmd, connection, null, SQLString, cmdParms);
            using (MySqlDataAdapter da = new MySqlDataAdapter(cmd))
            {
                DataSet ds = new DataSet();
                try
                {
                    da.Fill(ds, "ds");
                    cmd.Parameters.Clear();
                }
                catch (MySqlException ex)
                {
                    throw new Exception(ex.Message);
                }
                finally
                {
                    cmd.Dispose();
                    connection.Close();
                }
                return ds;
            }
        }
    }

    private static void PrepareCommand(MySqlCommand cmd, MySqlConnection conn, MySqlTransaction trans, string cmdText, System.Object[] cmdParms)
    {
        if (conn.State != ConnectionState.Open)
            conn.Open();

        cmd.Connection = conn;
        cmd.CommandText = cmdText;

        if (trans != null)
            cmd.Transaction = trans;

        cmd.CommandType = CommandType.Text;//cmdType;

        if (cmdParms != null)
        {
            foreach (MySqlParameter parameter in cmdParms)
            {
                if ((parameter.Direction == ParameterDirection.InputOutput || parameter.Direction == ParameterDirection.Input) &&
                    (parameter.Value == null))
                {
                    parameter.Value = DBNull.Value;
                }
                cmd.Parameters.Add(parameter);
            }
        }
    }

    #endregion 執行帶參數的SQL語句

    #region 存儲過程操做

    /// <summary>
    /// 執行存儲過程  (使用該方法切記要手工關閉MySqlDataReader和鏈接)
    /// 手動關閉不了，因此少用，MySql.Data組組件還沒解決該問題
    /// </summary>
    /// <param name="storedProcName">存儲過程名</param>
    /// <param name="parameters">存儲過程參數</param>
    /// <returns>MySqlDataReader</returns>
    public static MySqlDataReader RunProcedure(string storedProcName, System.Object[] parameters)
    {
        MySqlConnection connection = new MySqlConnection(m_connectionString);
        MySqlDataReader returnReader;
        connection.Open();
        MySqlCommand command = BuildQueryCommand(connection, storedProcName, parameters);
        command.CommandType = CommandType.StoredProcedure;
        returnReader = command.ExecuteReader();
        //Connection.Close(); 不能在此關閉，不然，返回的對象將沒法使用
        return returnReader;
    }

    /// <summary>
    /// 執行存儲過程
    /// </summary>
    /// <param name="storedProcName">存儲過程名</param>
    /// <param name="parameters">存儲過程參數</param>
    /// <param name="tableName">DataSet結果中的表名</param>
    /// <returns>DataSet</returns>
    public static DataSet RunProcedure(string storedProcName, System.Object[] parameters, string tableName)
    {
        using (MySqlConnection connection = new MySqlConnection(m_connectionString))
        {
            DataSet dataSet = new DataSet();
            connection.Open();
            MySqlDataAdapter sqlDA = new MySqlDataAdapter();
            sqlDA.SelectCommand = BuildQueryCommand(connection, storedProcName, parameters);
            sqlDA.Fill(dataSet, tableName);
            connection.Close();
            return dataSet;
        }
    }

    public static DataSet RunProcedure(string storedProcName, System.Object[] parameters, string tableName, int Times)
    {
        using (MySqlConnection connection = new MySqlConnection(m_connectionString))
        {
            DataSet dataSet = new DataSet();
            connection.Open();
            MySqlDataAdapter sqlDA = new MySqlDataAdapter();
            sqlDA.SelectCommand = BuildQueryCommand(connection, storedProcName, parameters);
            sqlDA.SelectCommand.CommandTimeout = Times;
            sqlDA.Fill(dataSet, tableName);
            connection.Close();
            return dataSet;
        }
    }

    /// <summary>
    /// 執行存儲過程
    /// </summary>
    /// <param name="storedProcName">存儲過程名</param>
    /// <param name="parameters">存儲過程參數</param>
    /// <returns></returns>
    public static void RunProcedureNull(string storedProcName, System.Object[] parameters)
    {
        using (MySqlConnection connection = new MySqlConnection(m_connectionString))
        {
            connection.Open();
            MySqlCommand command = BuildIntCommand(connection, storedProcName, parameters);
            command.ExecuteNonQuery();
            connection.Close();
        }
    }

    /// <summary>
    /// 執行存儲過程，返回第一行第一列的數據
    /// </summary>
    /// <param name="CommandText">T-SQL語句；例如："pr_shell 'dir *.exe'"或"select * from sysobjects where xtype=@xtype"</param>
    /// <param name="parameters">SQL參數</param>
    /// <returns>返回第一行第一列，用Convert.To{Type}把類型轉換爲想要的類型</returns>
    public object ExecuteScaler(string storedProcName, System.Object[] parameters)
    {
        using (MySqlConnection connection = new MySqlConnection(m_connectionString))
        {
            object returnObjectValue;
            connection.Open();
            MySqlCommand command = BuildQueryCommand(connection, storedProcName, parameters);
            returnObjectValue = command.ExecuteScalar();
            connection.Close();
            return returnObjectValue;
        }
    }

    /// <summary>
    /// 構建 SqlCommand 對象(用來返回一個結果集，而不是一個整數值)
    /// </summary>
    /// <param name="connection">數據庫鏈接</param>
    /// <param name="storedProcName">存儲過程名</param>
    /// <param name="parameters">存儲過程參數</param>
    /// <returns>SqlCommand</returns>
    private static MySqlCommand BuildQueryCommand(MySqlConnection connection, string storedProcName, System.Object[] parameters)
    {
        MySqlCommand command = new MySqlCommand(storedProcName, connection);
        command.CommandType = CommandType.StoredProcedure;
        foreach (MySqlParameter parameter in parameters)
        {
            if (parameter != null)
            {
                // 檢查未分配值的輸出參數,將其分配以DBNull.Value.
                if ((parameter.Direction == ParameterDirection.InputOutput || parameter.Direction == ParameterDirection.Input) &&
                    (parameter.Value == null))
                {
                    parameter.Value = DBNull.Value;
                }
                command.Parameters.Add(parameter);
            }
        }

        return command;
    }

    /// <summary>
    /// 建立 MySqlCommand 對象實例(用來返回一個整數值)
    /// </summary>
    /// <param name="storedProcName">存儲過程名</param>
    /// <param name="parameters">存儲過程參數</param>
    /// <returns>MySqlCommand 對象實例</returns>
    private static MySqlCommand BuildIntCommand(MySqlConnection connection, string storedProcName, System.Object[] parameters)
    {
        MySqlCommand command = BuildQueryCommand(connection, storedProcName, parameters);
        command.Parameters.Add(new MySqlParameter("ReturnValue",
            MySqlDbType.Int32, 4, ParameterDirection.ReturnValue,
            false, 0, 0, string.Empty, DataRowVersion.Default, null));
        return command;
    }

    #endregion 存儲過程操做
}