asp.net利用存储过程分页代码

-最通用的分页存储过程 
-- 获取指定页的数据   
CREATE PROCEDURE Pagination   
@tblName   varchar(255),       -- 表名   
@strGetFields varchar(1000) = '*', -- 需要返回的列  
@fldName varchar(255)='',      -- 排序的字段名  
@PageSize   int = 10,          -- 页尺寸   
@PageIndex int = 1,           -- 页码   
@doCount bit = 0,   -- 返回记录总数, 非 0 值则返回   
@OrderType bit = 0, -- 设置排序类型, 非 0 值则降序   
@strWhere varchar(1500) = '' -- 查询条件 (注意: 不要加 where)   
AS   
declare @strSQL   varchar(5000)       -- 主语句   
declare @strTmp   varchar(110)        -- 临时变量   
declare @strOrder varchar(400)        -- 排序类型     
if @doCount != 0   
begin   
   if @strWhere !=''   
   set @strSQL = 'select count(*) as Total from ['+ @tblName +'] where '+ @strWhere   
   else   
   set @strSQL = 'select count(*) as Total from ['+ @tblName +']'  
end   
--以上代码的意思是如果@doCount传递过来的不是0，就执行总数统计。以下的所有代码都 
--是@doCount为0的情况   
else   
begin     
if @OrderType != 0   
begin   
   set @strTmp = '<(select min'   
set @strOrder = ' order by ['+ @fldName +'] desc'  
--如果@OrderType不是0，就执行降序，这句很重要！   
end   
else   
begin   
   set @strTmp = '>(select max'  
   set @strOrder = ' order by ['+ @fldName +'] asc' 
end    
if @PageIndex = 1   
begin   
   if @strWhere != ''     
    set @strSQL = 'select top ' + str(@PageSize) +' '+@strGetFields+ ' from ['+ @tblName +'] where ' + @strWhere + ' ' + @strOrder   
    else   
    set @strSQL = 'select top ' + str(@PageSize) +' '+@strGetFields+ ' from ['+ @tblName +'] '+ @strOrder  
--如果是第一页就执行以上代码，这样会加快执行速度  
end   
else   
begin   
--以下代码赋予了@strSQL以真正执行的SQL代码   
set @strSQL = 'select top ' + str(@PageSize) +' '+@strGetFields+ ' from [' + @tblName +'] where [' + @fldName + ']' + @strTmp + '(['+ @fldName + ']) 
from (select top ' + str((@PageIndex-1)*@PageSize) + ' ['+ @fldName + '] from ['+ @tblName +']' + @strOrder + ') as tblTmp)'+ @strOrder 



if @strWhere != '' 

   set @strSQL = 'select top ' + str(@PageSize) +' '+@strGetFields+ ' from ['+ @tblName +'] where [' + @fldName + ']' + @strTmp + '(['+ @fldName + ']) from (select top ' + str((@PageIndex-1)*@PageSize) + ' ['+ @fldName + '] 
from ['+ @tblName +'] where ' + @strWhere + ' ' + @strOrder + ') as tblTmp) and ' + @strWhere + ' ' + @strOrder 

end 

end    

exec ( @strSQL) 
GO

C#代码
using System.Data ; 
using System.Data.SqlClient ; 
using Microsoft.ApplicationBlocks.Data ; 
using System.Web ; 
using System.Web.UI ; 
namespace RssLayer.PageHelper 
{ 
    /**//// <summary> 
    /// 分页类PagerHelper 的摘要说明。 
    /// </summary> 
    public class PagerHelper 
    { 
        private string connectionString; 
        public PagerHelper(string tblname,string sortname,bool docount,string connectionString) 
        { 
            this.tblName = tblname; 
            this.fldName = sortname ; 
            this.connectionString = connectionString ; 
            this.docount = docount; 
        } 

        public PagerHelper(string tblname,bool docount, 
            string strGetFields,    string fldName,int pagesize, 
            int pageindex,bool ordertype,string strwhere,string connectionString         
            ) 
        { 
            this.tblName = tblname ;             
            this.docount = docount ; 
            this.strGetFields = strGetFields ; 
            this.fldName = fldName; 
            this.pagesize = pagesize ; 
            this.pageindex = pageindex; 
            this.ordertype = ordertype ; 
            this.strwhere = strwhere ; 
            this.connectionString = connectionString ; 

        } 

        /**//// <summary> 
        /// 得到记录集的构造函数 
        /// </summary> 
        /// <param name="tblname"></param> 
        /// <param name="strwhere"></param> 
        /// <param name="connectionString"></param> 
        public PagerHelper(string tblname,string strwhere,string connectionString)     
        { 
            this.tblName = tblname; 
            this.strwhere = strwhere ; 
            this.docount = true; 
            this.connectionString = connectionString ; 
        } 

        private string tblName; 
        public string TblName 
        { 
            get{return tblName;} 
            set{tblName =value;} 
        } 

        private string strGetFields="*"; 
        public string StrGetFields 
        { 
            get{return strGetFields ;} 
            set{strGetFields =value;} 
        } 

        private string fldName=string.Empty; 
        public string FldName 
        { 
            get{return fldName ;} 
            set{fldName =value;} 
        }

        private int pagesize =10; 
        public int PageSize 
        { 
            get{return pagesize ;} 
            set{pagesize =value;} 
        } 

        private int pageindex =1; 
        public int PageIndex 
        { 
            get{return pageindex ;} 
            set{pageindex =value;} 
        }

        private bool docount=false; 
        public bool DoCount 
        { 
            get{return docount ;} 
            set{docount =value;} 
        } 

        private bool ordertype=false; 
        public bool OrderType 
        { 
            get{return ordertype ;} 
            set{ordertype =value;} 
        } 

        private string strwhere=string.Empty ; 
        public string StrWhere 
        { 
            get{return strwhere ;} 
            set{strwhere =value;} 
        } 

        public IDataReader GetDataReader() 
        { 

            if(this.docount) 
            { 
                throw new ArgumentException("要返回记录集，DoCount属性一定为false"); 
            }          
        //    System.Web.HttpContext.Current.Response.Write(pageindex); 

            return SqlHelper.ExecuteReader(connectionString,CommandType.StoredProcedure,"Pagination", 
                new SqlParameter("@tblName",this.tblName), 
                new SqlParameter("@strGetFields",this.strGetFields), 
                new SqlParameter("@fldName",this.fldName), 
                new SqlParameter("@PageSize",this.pagesize), 
                new SqlParameter("@PageIndex",this.pageindex), 
                new SqlParameter("@doCount",this.docount), 
                new SqlParameter("@OrderType",this.ordertype), 
                new SqlParameter("@strWhere",this.strwhere) 
                ); 
        } 
        public DataSet GetDataSet() 
        { 
            if(this.docount) 
            { 
                throw new ArgumentException("要返回记录集，DoCount属性一定为false"); 
            }     

            return SqlHelper.ExecuteDataset(connectionString,CommandType.StoredProcedure,"Pagination", 
                new SqlParameter("@tblName",this.tblName), 
                new SqlParameter("@strGetFields",this.strGetFields), 
                new SqlParameter("@fldName",this.fldName), 
                new SqlParameter("@PageSize",this.pagesize), 
                new SqlParameter("@PageIndex",this.pageindex), 
                new SqlParameter("@doCount",this.docount), 
                new SqlParameter("@OrderType",this.ordertype), 
                new SqlParameter("@strWhere",this.strwhere) 
                ); 
        } 
        public int GetCount() 
        { 
            if(!this.docount) 
            { 
                throw new ArgumentException("要返回总数统计，DoCount属性一定为true"); 
            }                    

            return (int)SqlHelper.ExecuteScalar(connectionString,CommandType.StoredProcedure,"Pagination", 
                new SqlParameter("@tblName",this.tblName), 
                new SqlParameter("@strGetFields",this.strGetFields), 
                new SqlParameter("@fldName",this.fldName), 
                new SqlParameter("@PageSize",this.pagesize), 
                new SqlParameter("@PageIndex",this.pageindex), 
                new SqlParameter("@doCount",this.docount), 
                new SqlParameter("@OrderType",this.ordertype), 
                new SqlParameter("@strWhere",this.strwhere) 
                ); 
        }         

    } 
}