asp.net中分页的代码(For Oracle and VS2005 C#)

代码是针对于AspNetPager写的。环境为oracle＋VS2005

代码如下：

using  System;
using  System.Text;
using  Oracle.DataAccess.Client;
using  Oracle.DataAccess.Types;
using  System.Data;
using  System.Collections;

namespace  Manager.Common
{
    /**//// <summary>
    /// Pager 分页
    /// zyl 
    /// version: 2.0
    /// </summary>
    public class Pager
    {
        public Pager()
        {
            //
        }

        分页函数模板, 我的代码，别动#region 分页函数模板, 我的代码，别动
        private static readonly string pagerTemplate = "select s.* from (select rownum as row_num, t.* from ([select] [order])t)s where s.row_num>=[start] and s.row_num <=[end]";
        private static readonly string selectTemplate = "select [field_list] from [table] [where] ";
        private static readonly string totalTemplate = " select count(*) from [table] [where] ";
        public static string connectionString = "";

        public static DataTable getResult(string table, string fieldList, string where, int startIndex, int size)
        {
            int total = 0;
            return getResult(table, fieldList, where,"", "", startIndex, size, ref total);
        }
        public static DataTable getResult(string table, string fieldList, string where, int startIndex, int size, ref int total)
        {
            return getResult(table, fieldList, where,"", "", startIndex, size, ref total);
        }
        public static DataTable getResult(string table, string fieldList, string where, string orderBy, string AscDesc, int startIndex, int size)
        {
            int total = 0;
            return getResult(table, fieldList, where,orderBy, AscDesc, startIndex, size, ref total);
        }
        /**//// <summary>
        /// 分页的函数
        /// zyl 2006-6-6
        /// </summary>
        /// <param name="table">要选择的表或视图名</param>
        /// <param name="fileList">字段列表，用逗号隔开，最后不应该是逗号,至少要有一个值，*也可以</param>
        /// <param name="where">查询条件，注意一定要带上关键字：where</param>
        /// <param name="orderBy">排序的字段，不要带 order by. 可为空，若为空，则表示不排序</param>
        /// <param name="AscDesc">排序方式，其中：ASC表示升序，DESC表示降序(ASC与DESC大小写无所谓)</param>
        /// <param name="startIndex">开始位置</param>
        /// <param name="endIndex">一页的大小</param>
        /// <param name="total">返回符号条件的记录总种条数，不是分页后的总条数</param>
        /// <returns>你想要的列表</returns>
        public static DataTable getResult(string table, string fieldList, string where, string orderBy, string AscDesc, int startIndex, int size, ref int total)
        {
        //    ArrayList arr = new ArrayList();
            DataTable dt = new DataTable();
            try
            {
                string pagerSql = "", totalSql = "";
                // 得到sql语句
                getSqlString( table,  fieldList,  where,  orderBy,  AscDesc, startIndex, size, ref pagerSql, ref totalSql);
            
                OracleConnection conn = new OracleConnection("ConnectionString");
                OracleCommand cmd = new OracleCommand();
                cmd.Connection = conn;
                cmd.CommandText = "p_pager";
                cmd.CommandType = CommandType.StoredProcedure;

                OracleParameter []paras = {new OracleParameter("select_total_sql", OracleDbType.Varchar2),
                                              new OracleParameter("pager_sql", OracleDbType.Varchar2),
                                              new OracleParameter("total", OracleDbType.Decimal),
                                              new OracleParameter("cur", OracleDbType.RefCursor)};

                paras[0].Value = totalSql;
                paras[1].Value = pagerSql;
                paras[2].Direction = ParameterDirection.Output;
                paras[3].Direction = ParameterDirection.Output;

                cmd.Parameters.Add(paras[0]);
                cmd.Parameters.Add(paras[1]);
                cmd.Parameters.Add(paras[2]);
                cmd.Parameters.Add(paras[3]);

                conn.Open();
                cmd.ExecuteNonQuery();

                // 取值
                total = (int)(((OracleDecimal)paras[2].Value).Value);
                OracleDataReader reader = (OracleDataReader)((OracleRefCursor)(paras[3].Value)).GetDataReader();
                dt.Load(reader);
                cmd.Parameters.Clear();
            }
            catch(Exception e)
            {
                Console.WriteLine(e.ToString());
            }
            return arr;
        }
        
        private static void getSqlString(string table, string fieldList, string where, string orderBy, string AscDesc, int startIndex, int size, ref string pagerSql, ref string totalSql)
        {
            if(startIndex <= 0)
                startIndex = 1;

            StringBuilder sbPager = new StringBuilder(pagerTemplate);
            StringBuilder sbSelect = new StringBuilder(selectTemplate);
            StringBuilder sbTotal = new StringBuilder(totalTemplate);

            // 单个 select 
            sbSelect.Replace("[field_list]", fieldList);
            sbSelect.Replace("[where]", where);
            sbSelect.Replace("[table]", table);

            // 分页 pager
            sbPager.Replace("[select]",sbSelect.ToString());
            sbPager.Replace("[start]",((startIndex-1) * size).ToString());
            sbPager.Replace("[end]",((startIndex)*size).ToString());
            if(orderBy.Trim() == "")
            {
                sbPager.Replace("[order]","");
            }
            else
            {
                string order = " order by  "+orderBy;
                if(AscDesc.Trim() == "")
                    order += " DESC ";
                else order = order + "  " + AscDesc;
                sbPager.Replace("[order]",order);
            }
            // 总数
            sbTotal.Replace("[table]", table);
            sbTotal.Replace("[where]", where);

            pagerSql = sbPager.ToString();
            totalSql = sbTotal.ToString();
        }
        #endregion


        
    }
}

下面是存储过程

--  通用的分页过程
--  zyl 
--  2006-6-6
create   or   replace   procedure  p_pager
(
   select_total_sql  varchar2 ,  --  用以结果的查询的语句
   pager_sql  varchar2 ,  --  用以分页语句
   total out  number ,    --  查询得出的总条数
   cur out sys_refcursor   --  返回结果集
) is
cur_tmp sys_refcursor;
begin
    open  cur_tmp  for  select_total_sql;
    fetch  cur_tmp  into  total;
    close  cur_tmp;
    open  cur  for  pager_sql;
end ;