Sql server預存程序和C#分頁類-本文摘自，如有侵權

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http://hi.baidu.com/followashadow/blog/item/7dd5ce12673ba7876438db77%2Ehtml

下面是預存程序（sqlserver2000下通過)

--最通用的分頁預存程序
-- 擷取指定頁的資料  

CREATE PROCEDURE Pagination  

@tblName   varchar(255),       -- 表名  

@strGetFields varchar(1000) = ’*’, -- 需要返回的列  

@fldName varchar(255)=’’,      -- 排序的欄位名  

@PageSize   int = 10,          -- 頁尺寸  

@PageIndex int = 1,           -- 頁碼  

@doCount bit = 0,   -- 返回記錄總數, 非 0 值則返回  

@OrderType bit = 0, -- 設定排序類型, 非 0 值則降序  

@strWhere varchar(1500) = ’’ -- 查詢條件 (注意: 不要加 where)  

AS  

declare @strSQL   varchar(5000)       -- 主語句  

declare @strTmp   varchar(110)        -- 臨時變數  

declare @strOrder varchar(400)        -- 排序類型  

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  

--以上代碼的意思是如果@doCount傳遞過來的不是0，就執行總數統計。以下的所有代碼都
--是@doCount為0的情況  

else  

begin  

if @OrderType != 0  

begin  

   set @strTmp = ’<(select min’  

set @strOrder = ’ order by [’+ @fldName +’] desc’

--如果@OrderType不是0，就執行降序，這句很重要！  

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  

--如果是第一頁就執行以上代碼，這樣會加快執行速度  

end  

else  

begin  

--以下代碼賦予了@strSQL以真正執行的SQL代碼  

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

下面是C#的代碼

using System.Data ;
using System.Data.SqlClient ;
using Microsoft.ApplicationBlocks.Data ;
using System.Web ;
using System.Web.UI ;
namespace RssLayer.PageHelper
{
    /**//// <summary>
    /// 分頁類PagerHelper 的摘要說明。
    /// </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>
        /// 得到記錄集的建構函式
        /// </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("要返回記錄集，DoCount屬性一定為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("要返回記錄集，DoCount屬性一定為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("要返回總數統計，DoCount屬性一定為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)
                );
        }         

    }

     

}

如何調用？？？

假如我已經建立了2個類。一個是FavList資料庫實體類，一個FavListCollection集合類。FavListCollection儲存了FavList實體類的集合。

我可以這樣寫一個方法。

/**//// <summary>
   &nb ...