SQL Server - SSQL Server2000和2005都能用的分页方法

 (1)存储过程(SQL2000和2005下都可用):

USE [Northwind]        
GO        
/****** 对象:    StoredProcedure [dbo].[p_GetOrders]        脚本日期: 03/29/2010 23:00:19 ******/    
SET ANSI_NULLS ON        
GO        
SET QUOTED_IDENTIFIER ON        
GO        
ALTER    PROCEDURE [dbo].[p_GetOrders]        
@strWhere     varchar(1500),     -- 查询条件 (注意: 不要加 where)        
@PageSize        int = 50,                    -- 页尺寸        
@PageIndex     int = 1,                     -- 页码        
@PageCount     int out,                     --总页数        
@RecordCount int out                        --总记录数        
AS        
BEGIN        
declare @strSQL     varchar(5000)             -- 主语句        
declare @strTmp     varchar(110)                -- 临时变量        
declare @strOrder varchar(400)                -- 排序类型        
select @RecordCount=count(*) from SaleInvoices        
select @PageCount=ceiling(@RecordCount/@PageSize)        
set @strTmp = '<(select min'    
set @strOrder = ' order by OrderID desc'    
if @PageIndex = 1    
begin        
         if @strWhere != ''            
         set @strSQL = 'select top ' + str(@PageSize) +' *    from Orders where ' + @strWhere + ' ' + @strOrder    
         else    
         set @strSQL = 'select top ' + str(@PageSize) +'    *     from Orders '+ @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) +'    *    from Orders        
where OrderID' + @strTmp + '(OrderID) from (select top ' + str((@PageIndex-1)*@PageSize) + ' OrderID from Orders' + @strOrder + ') as tblTmp)'+ @strOrder    
if @strWhere != ''    
         set @strSQL = 'select top ' + str(@PageSize) +'    * from Orders        
            where OrderID' + @strTmp + '(OrderID) from        
        (select top ' + str((@PageIndex-1)*@PageSize) + ' OrderID from Orders where ' + @strWhere + ' '        
                 + @strOrder + ') as tblTmp) and ' + @strWhere + ' ' + @strOrder    
end        
--print (@strSQL)        
exec (@strSQL)        
END    

 注:按钮中的文本设为"1"和"2"
    (3)页面后台:

private int PageSize = 5;     //全局变量        
             private int PageIndex = 1;     //全局变量        
//获取数据方法        
protected DataTable getPageDataSource( string sqlWhere, int pageIndex, int pageSize)        
             {        
                     string connStr = ConfigurationManager.AppSettings[ "MsSql2nd"].ToString();        
                     SqlConnection conn = new SqlConnection(connStr);        
                     conn.Open();        
                     string sql = "p_GetPaging";        
                     SqlCommand cmd = new SqlCommand(sql, conn);        
                     cmd.CommandType = CommandType.StoredProcedure;        
                     cmd.Parameters.Add( "@strWhere",SqlDbType.VarChar);        
                     cmd.Parameters[ "@strWhere"].Value = sqlWhere;        
                     cmd.Parameters.Add( "@PageIndex", SqlDbType.Int);        
                     cmd.Parameters[ "@PageIndex"].Value = pageIndex;        
                     cmd.Parameters.Add( "@PageSize", SqlDbType.Int);        
                     cmd.Parameters[ "@PageSize"].Value = pageSize;        
        cmd.Parameters.Add( "@RecordCount",SqlDbType.Int);        
                     cmd.Parameters[ "@RecordCount"].Direction = ParameterDirection.Output;        
                     cmd.Parameters.Add( "@PageCount", SqlDbType.Int);        
                     cmd.Parameters[ "@PageCount"].Direction = ParameterDirection.Output;        
                     SqlDataReader sdr = cmd.ExecuteReader();        
                     DataTable dt = new DataTable();        
                     dt.Load(sdr);        
                     sdr.Dispose();        
                     conn.Close();        
                     return dt;        
             }        
//获取总页数        
protected int getPageCount( string sqlWhere, int pageIndex, int pageSize)        
             {        
                     string connStr = ConfigurationManager.AppSettings[ "MsSql2nd"].ToString();        
                     SqlConnection conn = new SqlConnection(connStr);        
                     conn.Open();        
                     string sql = "p_GetPaging";        
                     SqlCommand cmd = new SqlCommand(sql, conn);        
                     cmd.CommandType = CommandType.StoredProcedure;        
                     cmd.Parameters.Add( "@strWhere",SqlDbType.VarChar);        
                     cmd.Parameters[ "@strWhere"].Value = sqlWhere;        
                     cmd.Parameters.Add( "@PageIndex", SqlDbType.Int);        
                     cmd.Parameters[ "@PageIndex"].Value = pageIndex;        
                     cmd.Parameters.Add( "@PageSize", SqlDbType.Int);        
                     cmd.Parameters[ "@PageSize"].Value = pageSize;        
        cmd.Parameters.Add( "@RecordCount",SqlDbType.Int);        
                     cmd.Parameters[ "@RecordCount"].Direction = ParameterDirection.Output;        
                     cmd.Parameters.Add( "@PageCount", SqlDbType.Int);        
                     cmd.Parameters[ "@PageCount"].Direction = ParameterDirection.Output;        
                     SqlDataReader sdr = cmd.ExecuteReader();        
                     DataTable dt = new DataTable();        
                     dt.Load(sdr);        
                     sdr.Dispose();        
                     conn.Close();        
                     //return dt;        
         int pageCount = ( int)cmd.Parameters[ "@PageCount"].Value;        
                     return pageCount;        
             }        
//搜索按钮事件        
protected void btnAllSearch_Click( object sender, EventArgs e)        
             {        
                     string sestr = this.txtAllSearch.Text.Trim();        
                     string sqlWhere = "";        
                     if (sestr == "")        
                     {        
                             sqlWhere = "";        
                     }        
                     else     
                     {        
                             sqlWhere = "[no] like \"%" + sestr + "%\""; //注意转义字符的使用        
                     }        
                     DataTable dt = getPageDataSource(sqlWhere, PageIndex, PageSize);        
                     this.GvSAll.DataSource = dt; ;        
                     this.GvSAll.DataBind();        
             }        
//前一页事件        
protected void lbtnPre_Click( object sender, EventArgs e)        
             {        
                     string sestr = this.txtAllSearch.Text.Trim();        
                     string sqlWhere = "";        
                     if (sestr == "")        
                     {        
                             sqlWhere = "";        
                     }        
                     else     
                     {        
                             sqlWhere = "[no] like \"%" + sestr + "%\"";         
                     }        
                     PageIndex = Convert.ToInt16( this.lbtnPre.Text);        
                     PageIndex -= 1;        
                     if (PageIndex<=1)        
                     {        
                             PageIndex = 1;        
                     }        
                     DataTable dt = getPageDataSource(sqlWhere, PageIndex, PageSize);        
                     this.lbtnPre.Text = PageIndex.ToString();        
                     this.lbtnNext.Text = (PageIndex + 1).ToString();        
                     this.GvSAll.DataSource = dt; ;        
                     this.GvSAll.DataBind();        
             }        
//后一页事件        
protected void lbtnNext_Click( object sender, EventArgs e)        
             {        
                     string sestr = this.txtAllSearch.Text.Trim();        
                     string sqlWhere = "";        
                     if (sestr == "")        
                     {        
                             sqlWhere = "";        
                     }        
                     else     
                     {        
                             sqlWhere = "[no] like \"%" + sestr + "%\"";         
                     }        
                     PageIndex=Convert.ToInt16( this.lbtnNext.Text);        
                     PageIndex += 1;        
         int PageCount = getPageCount("", 1, 5);        
                     if (PageIndex>PageCount+1)        
                     {        
                             PageIndex = PageCount+1;        
                     }        
                     DataTable dt = getPageDataSource(sqlWhere, PageIndex, PageSize);        
                     this.lbtnNext.Text = PageIndex.ToString();        
                     this.lbtnPre.Text = (PageIndex - 1).ToString();        
                     this.GvSAll.DataSource = dt; ;        
                     this.GvSAll.DataBind();                                
             }    

注:在两个翻页事件中利用了两按钮自身的文本值来保存参数,并相与影响