using System;   
using System.Collections;   
using System.Collections.Specialized;   
using System.Data;   
using System.Data.SqlClient;   
using System.Configuration;
using MySql.Data.MySqlClient;
using MySql.Data.Types;
namespace CommonFunc
{   
 
    /// <summary>   
    /// 数据访问抽象基础类(MYSQL)   
    /// Copyright (C) 04-08 NMJU.NET   
    /// All rights reserved   
    /// </summary>   
    public abstract class DbHelperSQLServer
    {
        private static Logger logger = new Logger();
        //数据库连接字符串(web.config来配置)   
        private static string connectionString = SqlDataObject.GetMySqlConnectionString;
        public DbHelperSQLServer()
        {
        }

        #region 公用方法
        /// <summary>   
        /// 获取某个表的数量   
        /// </summary>   
        /// <param name="field">主键</param>   
        /// <param name="tableName">表名</param>   
        /// <param name="where">条件</param>   
        /// <returns></returns>   
        public static int GetDataRecordCount(string field, string tableName, string where)
        {


            string strsql = "select count(" + field + ") from " + tableName;
            if (where != "")
            {
                strsql += " where " + where;
            }
            object obj = DbHelperSQLServer.ExecuteScalar(strsql);
            if (obj == null)
            {
                return 1;
            }
            else
            {
                return int.Parse(obj.ToString());
            }


        }
        public static int GetMaxID(string FieldName, string TableName)
        {
            string strsql = "select max(" + FieldName + ")+1 from " + TableName;
            object obj = DbHelperSQLServer.ExecuteScalar(strsql);
            if (obj == null)
            {
                return 1;
            }
            else
            {
                return int.Parse(obj.ToString());
            }
        }
        public static bool Exists(string strSql)
        {
            object obj = DbHelperSQLServer.ExecuteScalar(strSql);
            int cmdresult;
            if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
            {
                cmdresult = 0;
            }
            else
            {
                cmdresult = int.Parse(obj.ToString());
            }
            if (cmdresult == 0)
            {
                return false;
            }
            else
            {
                return true;
            }
        }
        public static bool Exists(string strSql, params MySqlParameter[] cmdParms)
        {
            object obj = DbHelperSQLServer.ExecuteScalar(strSql, cmdParms);
            int cmdresult;
            if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
            {
                cmdresult = 0;
            }
            else
            {
                cmdresult = int.Parse(obj.ToString());
            }
            if (cmdresult == 0)
            {
                return false;
            }
            else
            {
                return true;
            }
        }
        #endregion

        #region  执行简单SQL语句

        /// <summary>   
        /// 执行SQL语句，返回影响的记录数   
        /// </summary>   
        /// <param name="SQLString">SQL语句</param>   
        /// <returns>影响的记录数</returns>   
        public static int ExecuteNonQuery(string SQLString)
        {
            using (MySqlConnection connection = new MySqlConnection(connectionString))
            {
                using (MySqlCommand cmd = new MySqlCommand(SQLString, connection))
                {
                    try
                    {
                        connection.Open();
                        int rows = cmd.ExecuteNonQuery();
                        return rows;
                    }
                    catch (Exception ex)
                    {
                        connection.Close();
                        logger.Log(SQLString);
                        logger.Error( ex.Message + "\r\n" + ex.StackTrace);
                        return 0;
                    }
                }
            }
        }

        /// <summary>   
        /// 执行SQL语句，设置命令的执行等待时间   
        /// </summary>   
        /// <param name="SQLString"></param>   
        /// <param name="Times"></param>   
        /// <returns></returns>   
        public static int ExecuteNonQueryByTime(string SQLString, int Times)
        {
            using (MySqlConnection connection = new MySqlConnection(connectionString))
            {
                using (MySqlCommand cmd = new MySqlCommand(SQLString, connection))
                {
                    try
                    {
                        connection.Open();
                        cmd.CommandTimeout = Times;
                        int rows = cmd.ExecuteNonQuery();
                        return rows;
                    }
                    catch (Exception ex)
                    {
                       
                        connection.Close();
                        logger.Error( ex.Message + "\r\n" + ex.StackTrace);
                        return 0;
                    }
                }
            }
        }

        /// <summary>   
        /// 执行多条SQL语句，实现数据库事务。   
        /// </summary>   
        /// <param name="SQLStringList">多条SQL语句</param>        
        public static void ExecuteNonQueryTran(ArrayList SQLStringList)
        {
            using (MySqlConnection conn = new MySqlConnection(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 (Exception ex)
                {
                    tx.Rollback();
                    logger.Error( ex.Message + "\r\n" + ex.StackTrace);
                    //    ITNB.Base.Error.showError(E.Message.ToString());   
                }
            }
        }
        /// <summary>   
        /// 执行带一个存储过程参数的的SQL语句。   
        /// </summary>   
        /// <param name="SQLString">SQL语句</param>   
        /// <param name="content">参数内容,比如一个字段是格式复杂的文章，有特殊符号，可以通过这个方式添加</param>   
        /// <returns>影响的记录数</returns>   
        public static int ExecuteNonQuery(string SQLString, string content)
        {
            using (MySqlConnection connection = new MySqlConnection(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 (Exception ex)
                {
                    logger.Log(SQLString);
                    logger.Error( ex.Message + "\r\n" + ex.StackTrace);
                    return 0;
                }
                finally
                {
                    cmd.Dispose();
                    connection.Close();
                }
            }
        }
        /// <summary>   
        /// 执行带一个存储过程参数的的SQL语句。   
        /// </summary>   
        /// <param name="SQLString">SQL语句</param>   
        /// <param name="content">参数内容,比如一个字段是格式复杂的文章，有特殊符号，可以通过这个方式添加</param>   
        /// <returns>影响的记录数</returns>   
        public static object ExecuteNonQueryGet(string SQLString, string content)
        {
            using (MySqlConnection connection = new MySqlConnection(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 ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
                    {
                        return null;
                    }
                    else
                    {
                        return obj;
                    }
                }
                catch (Exception ex)
                {
                    logger.Log(SQLString);
                    logger.Error( ex.Message + "\r\n" + ex.StackTrace);
                    return null;
                }
                finally
                {
                    cmd.Dispose();
                    connection.Close();
                }
            }
        }
        /// <summary>   
        /// 向数据库里插入图像格式的字段(和上面情况类似的另一种实例)   
        /// </summary>   
        /// <param name="strSQL">SQL语句</param>   
        /// <param name="fs">图像字节,数据库的字段类型为image的情况</param>   
        /// <returns>影响的记录数</returns>   
        public static int ExecuteNonQueryInsertImg(string strSQL, byte[] fs)
        {
            using (MySqlConnection connection = new MySqlConnection(connectionString))
            {
                MySqlCommand cmd = new MySqlCommand(strSQL, connection);
                MySqlParameter myParameter = new MySqlParameter("@fs", MySqlDbType.MediumBlob);
                myParameter.Value = fs;
                cmd.Parameters.Add(myParameter);
                try
                {
                    connection.Open();
                    int rows = cmd.ExecuteNonQuery();
                    return rows;
                }
                catch (Exception ex)
                {
                    logger.Log(strSQL);
                    logger.Error( ex.Message + "\r\n" + ex.StackTrace);
                    return 0;  
                }
                finally
                {
                    cmd.Dispose();
                    connection.Close();
                }
            }
        }

        /// <summary>   
        /// 执行一条计算查询结果语句，返回查询结果（object）。   
        /// </summary>   
        /// <param name="SQLString">计算查询结果语句</param>   
        /// <returns>查询结果（object）</returns>   
        public static object ExecuteScalar(string SQLString)
        {
            using (MySqlConnection connection = new MySqlConnection(connectionString))
            {
                using (MySqlCommand cmd = new MySqlCommand(SQLString, connection))
                {
                    try
                    {
                        connection.Open();
                        object obj = cmd.ExecuteScalar();
                        if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
                        {
                            return null;
                        }
                        else
                        {
                            return obj;
                        }
                    }
                    catch (Exception ex)
                    {
                        logger.Log(SQLString);
                        connection.Close();
                        logger.Error( ex.Message + "\r\n" + ex.StackTrace);
                        return null;
                    }
                }
            }
        }

        /// <summary>   
        /// 执行查询语句，返回MySqlDataReader(使用该方法切记要手工关闭MySqlDataReader和连接)   
        /// </summary>   
        /// <param name="strSQL">查询语句</param>   
        /// <returns>MySqlDataReader</returns>   
        public static MySqlDataReader ExecuteReader(string strSQL)
        {
            MySqlConnection connection = new MySqlConnection(connectionString);
            MySqlCommand cmd = new MySqlCommand(strSQL, connection);
            try
            {
                connection.Open();
                MySqlDataReader myReader = cmd.ExecuteReader();
                return myReader;
            }
            catch (Exception ex)
            {
                logger.Log(strSQL);
                connection.Close();
                logger.Error( ex.Message + "\r\n" + ex.StackTrace);
                return null;
            }
            //finally //不能在此关闭，否则，返回的对象将无法使用   
            //{   
            //  cmd.Dispose();   
            //  connection.Close();   
            //}    


        }
        /// <summary>   
        /// 执行查询语句，返回DataSet   
        /// </summary>   
        /// <param name="SQLString">查询语句</param>   
        /// <returns>DataSet</returns>   
        public static DataSet Query(string SQLString)
        {
            using (SqlConnection connection = new SqlConnection(connectionString))
            {
                DataSet ds = new DataSet();
                try
                {
                    connection.Open();
                    SqlDataAdapter command = new SqlDataAdapter(SQLString, connection);
                    command.Fill(ds, "ds");
                }
                catch (Exception ex)
                {
                    logger.Log(SQLString);
                    logger.Error( ex.Message + "\r\n" + ex.StackTrace);
                }
                return ds;
            }
        }
        /// <summary>   
        /// 执行查询语句，返回DataSet,设置命令的执行等待时间   
        /// </summary>   
        /// <param name="SQLString"></param>   
        /// <param name="Times"></param>   
        /// <returns></returns>   
        public static DataSet Query(string SQLString, int Times)
        {
            using (SqlConnection connection = new SqlConnection(connectionString))
            {
                DataSet ds = new DataSet();
                try
                {
                    connection.Open();
                    SqlDataAdapter command = new SqlDataAdapter(SQLString, connection);
                    command.SelectCommand.CommandTimeout = Times;
                    command.Fill(ds, "ds");
                }
                catch (Exception ex)
                {
                    logger.Log(SQLString);
                    connection.Close();
                    logger.Error( ex.Message + "\r\n" + ex.StackTrace);
                    //  ITNB.Base.Error.showError(ex.Message.ToString());   
                }
                return ds;
            }
        }



        #endregion

        #region 执行带参数的SQL语句

        /// <summary>   
        /// 执行SQL语句，返回影响的记录数   
        /// </summary>   
        /// <param name="SQLString">SQL语句</param>   
        /// <returns>影响的记录数</returns>   
        public static int ExecuteNonQuery(string SQLString, params MySqlParameter[] cmdParms)
        {
            using (MySqlConnection connection = new MySqlConnection(connectionString))
            {
                using (MySqlCommand cmd = new MySqlCommand())
                {
                    try
                    {
                        PrepareCommand(cmd, connection, null, SQLString, cmdParms);
                        int rows = cmd.ExecuteNonQuery();
                        cmd.Parameters.Clear();
                        return rows;
                    }
                    catch (Exception ex)
                    {
                        logger.Log(SQLString);
                        logger.Error( ex.Message + "\r\n" + ex.StackTrace);
                        return 0;
                    }
                }
            }
        }


        /// <summary>   
        /// 执行多条SQL语句，实现数据库事务。   
        /// </summary>   
        /// <param name="SQLStringList">SQL语句的哈希表（key为sql语句，value是该语句的MySqlParameter[]）</param>   
        public static void ExecuteNonQueryTran(Hashtable SQLStringList)
        {
            using (MySqlConnection conn = new MySqlConnection(connectionString))
            {
                conn.Open();
                using (MySqlTransaction trans = conn.BeginTransaction())
                {
                    MySqlCommand cmd = new MySqlCommand();
                    try
                    {
                        //循环   
                        foreach (DictionaryEntry myDE in SQLStringList)
                        {
                            string cmdText = myDE.Key.ToString();
                            MySqlParameter[] cmdParms = (MySqlParameter[])myDE.Value;
                            PrepareCommand(cmd, conn, trans, cmdText, cmdParms);
                            int val = cmd.ExecuteNonQuery();
                            cmd.Parameters.Clear();

                            trans.Commit();
                        }
                    }
                    catch
                    {
                        trans.Rollback();
                        throw;
                    }
                }
            }
        }


        /// <summary>   
        /// 执行一条计算查询结果语句，返回查询结果（object）。   
        /// </summary>   
        /// <param name="SQLString">计算查询结果语句</param>   
        /// <returns>查询结果（object）</returns>   
        public static object ExecuteScalar(string SQLString, params MySqlParameter[] cmdParms)
        {
            using (MySqlConnection connection = new MySqlConnection(connectionString))
            {
                using (MySqlCommand cmd = new MySqlCommand())
                {
                    try
                    {
                        PrepareCommand(cmd, connection, null, SQLString, cmdParms);
                        object obj = cmd.ExecuteScalar();
                        cmd.Parameters.Clear();
                        if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
                        {
                            return null;
                        }
                        else
                        {
                            return obj;
                        }
                    }
                    catch (Exception ex)
                    {
                        logger.Log(SQLString);
                        logger.Error( ex.Message + "\r\n" + ex.StackTrace);
                        return null;  
                    }
                }
            }
        }

        /// <summary>   
        /// 执行查询语句，返回MySqlDataReader (使用该方法切记要手工关闭MySqlDataReader和连接)   
        /// </summary>   
        /// <param name="strSQL">查询语句</param>   
        /// <returns>MySqlDataReader</returns>   
        public static MySqlDataReader ExecuteReader(string SQLString, params MySqlParameter[] cmdParms)
        {
            MySqlConnection connection = new MySqlConnection(connectionString);
            MySqlCommand cmd = new MySqlCommand();
            try
            {
                PrepareCommand(cmd, connection, null, SQLString, cmdParms);
                MySqlDataReader myReader = cmd.ExecuteReader();
                cmd.Parameters.Clear();
                return myReader;
            }
            catch (Exception ex)
            {
                logger.Log(SQLString);
                logger.Error( ex.Message + "\r\n" + ex.StackTrace);
                return null;
            }
   

        }

        /// <summary>   
        /// 执行查询语句，返回DataSet   
        /// </summary>   
        /// <param name="SQLString">查询语句</param>   
        /// <returns>DataSet</returns>   
        public static DataSet Query(string SQLString, params MySqlParameter[] cmdParms)
        {
            using (MySqlConnection connection = new MySqlConnection(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 (Exception ex)
                    {
                        logger.Log(SQLString);
                        logger.Error( ex.Message + "\r\n" + ex.StackTrace);
                    }
                    return ds;
                }
            }
        }


        private static void PrepareCommand(MySqlCommand cmd, MySqlConnection conn, MySqlTransaction trans, string cmdText, MySqlParameter[] 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

        #region 存储过程操作

        /// <summary>   
        /// 执行存储过程  (使用该方法切记要手工关闭MySqlDataReader和连接)   
        /// </summary>   
        /// <param name="storedProcName">存储过程名</param>   
        /// <param name="parameters">存储过程参数</param>   
        /// <returns>MySqlDataReader</returns>   
        public static MySqlDataReader RunProcedure(string storedProcName, IDataParameter[] parameters)
        {
            MySqlConnection connection = new MySqlConnection(connectionString);
            MySqlDataReader returnReader;
            connection.Open();
            MySqlCommand command = BuildQueryCommand(connection, storedProcName, parameters);
            command.CommandType = CommandType.StoredProcedure;
            returnReader = command.ExecuteReader();
            //Connection.Close(); 不能在此关闭，否则，返回的对象将无法使用               
            return returnReader;

        }


        /// <summary>   
        /// 执行存储过程   
        /// </summary>   
        /// <param name="storedProcName">存储过程名</param>   
        /// <param name="parameters">存储过程参数</param>   
        /// <param name="tableName">DataSet结果中的表名</param>   
        /// <returns>DataSet</returns>   
        public static DataSet RunProcedure(string storedProcName, IDataParameter[] parameters, string tableName)
        {
            using (MySqlConnection connection = new MySqlConnection(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, IDataParameter[] parameters, string tableName, int Times)
        {
            using (MySqlConnection connection = new MySqlConnection(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>   
        /// 执行存储过程后返回执行结果（标识）   
        /// </summary>   
        /// <param name="storedProcName"></param>   
        /// <param name="parameters"></param>   
        /// <returns></returns>   
        public static string RunProcedureState(string storedProcName, IDataParameter[] parameters)
        {
            using (MySqlConnection connection = new MySqlConnection(connectionString))
            {

                connection.Open();
                MySqlDataAdapter sqlDA = new MySqlDataAdapter();
                sqlDA.SelectCommand = BuildQueryCommand(connection, storedProcName, parameters);
                sqlDA.SelectCommand.Parameters.Add(new MySqlParameter("ReturnValue", MySqlDbType.Int32, 4, ParameterDirection.ReturnValue, false, 0, 0, string.Empty, DataRowVersion.Default, null)); //增加存储过程的返回值参数   
                sqlDA.SelectCommand.ExecuteNonQuery();
                connection.Close();
                return sqlDA.SelectCommand.Parameters["ReturnValue"].Value.ToString();
            }
        }
        /*  
            @TableNames VARCHAR(0),    --表名，可以是多个表，但不能用别名  
            @PrimaryKey VARCHAR(0),    --主键，可以为空，但@Order为空时该值不能为空  
            @Fields    VARCHAR(0),        --要取出的字段，可以是多个表的字段，可以为空，为空表示select *  
            @PageSize INT,            --每页记录数  
            @CurrentPage INT,        --当前页，0表示第1页  
            @Filter VARCHAR(0) = '',    --条件，可以为空，不用填 where  
            @Group VARCHAR(0) = '',    --分组依据，可以为空，不用填 group by  
            @Order VARCHAR(0) = ''    --排序，可以为空，为空默认按主键升序排列，不用填 order by  
 
         */
        /// <summary>   
        /// 关键字，显示字段，表，条件，排序，每页显示数，当前页   
        /// </summary>   
        /// <param name="PrimaryKey">主键</param>   
        /// <param name="Fields">要取出的字段</param>   
        /// <param name="TableNames">表名</param>   
        /// <param name="Filter">条件</param>   
        /// <param name="Order">排序</param>   
        /// <param name="PageSize">每页记录数INT</param>   
        /// <param name="CurrentPage">当前页，INT</param>   
        /// <returns></returns>   
        public static DataSet GetPageDataList(string PrimaryKey, string Fields, string TableNames, string Filter, string Order, int PageSize, int CurrentPage)
        {
            string tableName = "viewPage";
            string storedProcName = "P_viewPage";
            IDataParameter[] p = new IDataParameter[8];
            p[0] = new MySqlParameter("TableNames", TableNames);
            p[1] = new MySqlParameter("PrimaryKey", PrimaryKey);
            p[2] = new MySqlParameter("Fields", Fields);
            p[3] = new MySqlParameter("PageSize", PageSize);
            p[4] = new MySqlParameter("CurrentPage", CurrentPage - 1);
            p[5] = new MySqlParameter("Filter", Filter);
            p[6] = new MySqlParameter("Group", "");
            p[7] = new MySqlParameter("Order", Order);

            return RunProcedure(storedProcName, p, tableName);
        }
        public static DataSet GetPageDataList(string PrimaryKey, string Fields, string TableNames, string Filter, string Order, int PageSize, int CurrentPage, string Group)
        {
            string tableName = "viewPage";
            string storedProcName = "P_viewPage";
            IDataParameter[] p = new IDataParameter[8];
            p[0] = new MySqlParameter("TableNames", TableNames);
            p[1] = new MySqlParameter("PrimaryKey", PrimaryKey);
            p[2] = new MySqlParameter("Fields", Fields);
            p[3] = new MySqlParameter("PageSize", PageSize);
            p[4] = new MySqlParameter("CurrentPage", CurrentPage - 1);
            p[5] = new MySqlParameter("Filter", Filter);
            p[6] = new MySqlParameter("Group", Group);
            p[7] = new MySqlParameter("Order", Order);

            return RunProcedure(storedProcName, p, tableName);
        }
        /*  
                @TableName VARCHAR(0),     --表名  
                @FieldList VARCHAR(00),    --显示列名，如果是全部字段则为*  
                @PrimaryKey VARCHAR(0),    --单一主键或唯一值键  
                @Where VARCHAR(00),        --查询条件 不含'where'字符，如id> and len(userid)>9  
                @Order VARCHAR(00),        --排序 不含'order by'字符，如id asc,userid desc，必须指定asc或desc  
                --注意当@SortType=3时生效，记住一定要在最后加上主键，否则会让你比较郁闷  
                @SortType INT,               --排序规则 1:正序asc 2:倒序desc 3:多列排序方法  
                @RecorderCount INT,          --记录总数 0:会返回总记录  
                @PageSize INT,               --每页输出的记录数  
                @PageIndex INT,              --当前页数  
                @TotalCount INT OUTPUT,      --记返回总记录  
                @TotalPageCount INT OUTPUT   --返回总页数  
         */
        public static DataSet GetPageDataList2(string PrimaryKey, string FieldList, string TableName, string Where, string Order, int PageSize, int PageIndex)
        {
            string tableName = "viewPage";
            string storedProcName = "P_viewPage2";
            IDataParameter[] p = new IDataParameter[11];
            p[0] = new MySqlParameter("TableName", TableName);
            p[1] = new MySqlParameter("FieldList", FieldList);
            p[2] = new MySqlParameter("PrimaryKey", PrimaryKey);
            p[3] = new MySqlParameter("Where", Where);
            p[4] = new MySqlParameter("Order", Order);
            p[5] = new MySqlParameter("SortType", 3);
            p[6] = new MySqlParameter("RecorderCount", 0);
            p[7] = new MySqlParameter("PageSize", PageSize);
            p[8] = new MySqlParameter("PageIndex", PageIndex);
            p[9] = new MySqlParameter("TotalCount", 0);
            p[10] = new MySqlParameter("TotalPageCount", 0);


            return RunProcedure(storedProcName, p, tableName);
        }

        /// <summary>   
        /// 构建 MySqlCommand 对象(用来返回一个结果集，而不是一个整数值)   
        /// </summary>   
        /// <param name="connection">数据库连接</param>   
        /// <param name="storedProcName">存储过程名</param>   
        /// <param name="parameters">存储过程参数</param>   
        /// <returns>MySqlCommand</returns>   
        private static MySqlCommand BuildQueryCommand(MySqlConnection connection, string storedProcName, IDataParameter[] parameters)
        {
            MySqlCommand command = new MySqlCommand(storedProcName, connection);
            command.CommandType = CommandType.StoredProcedure;
            if (parameters != null)
            {
                foreach (MySqlParameter parameter in parameters)
                {
                    if (parameter != null)
                    {
                        // 检查未分配值的输出参数,将其分配以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>   
        /// 执行存储过程，返回影响的行数         
        /// </summary>   
        /// <param name="storedProcName">存储过程名</param>   
        /// <param name="parameters">存储过程参数</param>   
        /// <param name="rowsAffected">影响的行数</param>   
        /// <returns></returns>   
        public static int RunProcedure(string storedProcName, IDataParameter[] parameters, out int rowsAffected)
        {
            using (MySqlConnection connection = new MySqlConnection(connectionString))
            {
                int result;
                connection.Open();
                MySqlCommand command = BuildIntCommand(connection, storedProcName, parameters);
                rowsAffected = command.ExecuteNonQuery();
                result = (int)command.Parameters["ReturnValue"].Value;
                //Connection.Close();   
                return result;
            }
        }

        /// <summary>   
        /// 创建 MySqlCommand 对象实例(用来返回一个整数值)      
        /// </summary>   
        /// <param name="storedProcName">存储过程名</param>   
        /// <param name="parameters">存储过程参数</param>   
        /// <returns>MySqlCommand 对象实例</returns>   
        private static MySqlCommand BuildIntCommand(MySqlConnection connection, string storedProcName, IDataParameter[] 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

        #region SQL语句式分页
        /// <summary>      
        /// 智能返回SQL语句      
        /// </summary>      
        /// <param name="primaryKey">主键（不能为空）</param>      
        /// <param name="queryFields">提取字段（不能为空）</param>      
        /// <param name="tableName">表（理论上允许多表）</param>      
        /// <param name="condition">条件（可以空）</param>      
        /// <param name="OrderBy">排序，格式：字段名+""+ASC（可以空）</param>      
        /// <param name="pageSize">分页数（不能为空）</param>      
        /// <param name="pageIndex">当前页，起始为：1（不能为空）</param>      
        /// <returns></returns>      

        public static DataSet GetPageDataListSQL(string primaryKey, string queryFields, string tableName, string condition, string orderBy, int pageSize, int pageIndex)
        {
            string strTmp = ""; //---strTmp用于返回的SQL语句      
            string SqlSelect = "", SqlPrimaryKeySelect = "", strOrderBy = "", strWhere = " where 1=1 ", strTop = "";
            //0：分页数量      
            //1:提取字段      
            //2:表      
            //3:条件      
            //4:主键不存在的记录      
            //5:排序      
            SqlSelect = " select top {0} {1} from {2} {3} {4} {5}";
            //0:主键      
            //1:TOP数量,为分页数*(排序号-1)      
            //2:表      
            //3:条件      
            //4:排序      
            SqlPrimaryKeySelect = " and {0} not in (select {1} {0} from {2} {3} {4}) ";

            if (orderBy != "")
                strOrderBy = " order by " + orderBy;
            if (condition != "")
                strWhere += " and " + condition;
            int pageindexsize = (pageIndex - 1) * pageSize;
            if (pageindexsize > 0)
            {
                strTop = " top " + pageindexsize.ToString();

                SqlPrimaryKeySelect = String.Format(SqlPrimaryKeySelect, primaryKey, strTop, tableName, strWhere, strOrderBy);

                strTmp = String.Format(SqlSelect, pageSize.ToString(), queryFields, tableName, strWhere, SqlPrimaryKeySelect, strOrderBy);

            }
            else
            {
                strTmp = String.Format(SqlSelect, pageSize.ToString(), queryFields, tableName, strWhere, "", strOrderBy);

            }
            return Query(strTmp);
        }
        #endregion
        #region 获取安全的SQL字符串
        /// <summary>   
        /// 获取安全的SQL字符串   
        /// </summary>   
        /// <param name="sql"></param>   
        /// <returns></returns>   
        public static string GetSafeSQLString(string sql)
        {
            sql = sql.Replace(",", "，");
            sql = sql.Replace(".", "。");
            sql = sql.Replace("(", "（");
            sql = sql.Replace(")", "）");
            sql = sql.Replace(">", "＞");
            sql = sql.Replace("<", "＜");
            sql = sql.Replace("-", "－");
            sql = sql.Replace("+", "＋");
            sql = sql.Replace("=", "＝");
            sql = sql.Replace("?", "？");
            sql = sql.Replace("*", "＊");
            sql = sql.Replace("|", "｜");
            sql = sql.Replace("&", "＆");
            return sql;
        }
        #endregion
    }   
  
}