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asp.net利用存储过程分页代码

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

下面是存储过程(sqlserver2000下通过)

 

字串7

 

--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  字串2
 
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' 
  字串5
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 

字串1

 
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
  字串6
 

字串2

 

下面是C#的代码 字串7


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 ;

字串7

            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 ;
字串3

            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> 字串6
        /// <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

字串2


        {
            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 ;} 字串2
            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;} 字串8
        }
 
 
        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 ;
字串5

        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");
            }
字串8

 
        
 
        //    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), 字串2
                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");
字串4

            }    
 
            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), 字串6
                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"); 字串4
            }
 
                    
 
            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), 字串1
                new SqlParameter("@doCount",this.docount),
                new SqlParameter("@OrderType",this.ordertype),
                new SqlParameter("@strWhere",this.strwhere)
                );
        }        
 
    }
 
    
 
 
}

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