access下的分页方案

    具体不多说了，只贴出相关源码~
  
  using System;
  using System.Collections.Generic;
  using System.Text;
  using System.Data;
  using System.Data.OleDb;
  using System.Web;
  
  /**//// <summary>
  /// 名称：access下的分页方案（仿sql存储过程）
  /// 作者：cncxz(虫虫)
  /// blog：http://cncxz.cnblogs.com
  /// </summary>
  public class AdoPager
  {
   protected string m_ConnString;
   protected OleDbConnection m_Conn;
  
   public AdoPager()
   {
   CreateConn(string.Empty);
   }
   public AdoPager(string dbPath)
   {
   CreateConn(dbPath);
   }
  
   private void CreateConn(string dbPath)
   {
   if (string.IsNullOrEmpty(dbPath))
   {
   string str = System.Configuration.ConfigurationManager.AppSettings["dbPath"] as string;
   if (string.IsNullOrEmpty(str))
   str = "~/App_Data/db.mdb";
   m_ConnString = string.Format(@"Provider=Microsoft.Jet.OLEDB.4.0;Data source={0}", HttpContext.Current.Server.MapPath(str));
   }
   else
   m_ConnString = string.Format(@"Provider=Microsoft.Jet.OLEDB.4.0;Data source={0}", dbPath);
  
   m_Conn = new OleDbConnection(m_ConnString);
   }
   /**//// <summary>
   /// 打开连接
   /// </summary>
   public void ConnOpen()
   {
   if (m_Conn.State != ConnectionState.Open)
   m_Conn.Open();
   }
   /**//// <summary>
   /// 关闭连接
   /// </summary>
   public void ConnClose()
   {
   if (m_Conn.State != ConnectionState.Closed)
   m_Conn.Close();
   }
  
   private string recordID(string query, int passCount)
   {
   OleDbCommand cmd = new OleDbCommand(query, m_Conn);
   string result = string.Empty;
   using (IDataReader dr = cmd.ExecuteReader())
   {
   while (dr.Read())
   {
   if (passCount < 1)
   {
   result += "," + dr.GetInt32(0);
   }
   passCount--;
   }
   }
   return result.Substring(1);
   }
  
  
   /**//// <summary>
   /// 获取当前页应该显示的记录，注意：查询中必须包含名为ID的自动编号列，若不符合你的要求，就修改一下源码吧 :)
   /// </summary>
   /// <param name="pageIndex">当前页码</param>
   /// <param name="pageSize">分页容量</param>
   /// <param name="showString">显示的字段</param>
   /// <param name="queryString">查询字符串，支持联合查询</param>
   /// <param name="whereString">查询条件，若有条件限制则必须以where 开头</param>
   /// <param name="orderString">排序规则</param>
   /// <param name="pageCount">传出参数：总页数统计</param>
   /// <param name="recordCount">传出参数：总记录统计</param>
   /// <returns>装载记录的DataTable</returns>
   public DataTable ExecutePager(int pageIndex, int pageSize, string showString, string queryString, string whereString, string orderString, out int pageCount, out int recordCount)
   {
   if (pageInd