分页存储过程(对有主键的表效率极高) ,以及在asp.net中配合LtpPageControl的用法

---------------------------------

--用途：分页存储过程(对有主键的表效率极高)

--说明：

------------------------------------

CREATE PROCEDURE UP_GetRecordByPage

@tblName varchar(255), -- 表名

@fldName varchar(255), -- 主键字段名

@PageSize int = 10, -- 页尺寸

@PageIndex int = 1, -- 页码

@IsReCount 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(1000) = '' -- 查询条件 (注意: 不要加 where)

declare @strSQL varchar(6000) -- 主语句

declare @strTotal varchar(2000) -- 获取记录数合计语句

declare @strTmp varchar(1000) -- 临时变量

declare @strOrder varchar(400) -- 排序类型

if @OrderType != 0

begin

set @strTmp = '<(select min'

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

end

else

begin

set @strTmp = '>(select max'

set @strOrder = ' order by [' + @fldName +'] asc'

end

set @strSQL = 'select top ' + str(@PageSize) + ' * 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) + ' * from ['

+ @tblName + '] where [' + @fldName + ']' + @strTmp + '(['

+ @fldName + ']) from (select top ' + str((@PageIndex-1)*@PageSize) + ' ['

+ @fldName + '] from [' + @tblName + '] where ' + @strWhere + ' '

+ @strOrder + ') as tblTmp) and ' + @strWhere + ' ' + @strOrder

if @PageIndex = 1

begin

set @strTmp =''

if @strWhere != ''

set @strTmp = ' where ' + @strWhere

set @strSQL = 'select top ' + str(@PageSize) + ' * from ['

+ @tblName + ']' + @strTmp + ' ' + @strOrder

end

if @strWhere != ''

set @strTotal = 'select count(*) as Total from [' + @tblName + ']'+' where ' + @strWhere

else

set @strTotal = 'select count(*) as Total from [' + @tblName + ']'

exec (@strSQL)

if @IsReCount != 0

exec (@strTotal)

在asp.net中的代码,本人采用三层架构,没有完全整理好,相信大家都能看的懂,呵呵~~~~~~~~~
1.html代码

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="GridViewMinutepage.aspx.cs"

Inherits="GridViewMinutepage_" %>

<%@ Register Assembly="LtpPageControl" Namespace="LtpPageControl" TagPrefix="cc1" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

</head>

<body>

<div>

<asp:GridView ID="GridView1" runat="server" Width="100%">

</asp:GridView>

</div>

<cc1:Page02 ID="Page02_1" runat="server" Page_Index="GridViewMinutepage.aspx" />

</form>

</body>

</html>

2.cs代码

using System;

using System.Data;

using System.Configuration;

using System.Collections;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

public partial class GridViewMinutepage_ : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

int PageIndex = 1;

if (!Page.IsPostBack)

{

if (Request.Params["page"] != null && Request.Params["page"].ToString() != "")

{

PageIndex = Convert.ToInt32(Request.Params["page"]);

}

else

{

PageIndex = 1;

}

dataBind(PageIndex, 5, "");

}

/// <summary>

/// 功能:分页控件应用

/// 作者： PUKE

/// 完成日期： 2007-05-28

/// </summary>

/// <param name="pageIndex">当前页</param>

/// <param name="PageSize">每页几行</param>

/// <param name="strSql">条件</param>

public void dataBind(int pageIndex, int PageSize, string strSql)

{

Practice.BLL.authors bll = new Practice.BLL.authors();

DataSet ds = bll.Minutepage("authors", "au_id", PageSize, pageIndex, 1, 0,strSql);

this.GridView1.DataSource = ds.Tables[0].DefaultView;

int record_Count = Convert.ToInt32(ds.Tables[1].Rows[0][0].ToString());

int totalPages = int.Parse(Math.Ceiling((double)record_Count / PageSize).ToString());

if (totalPages > 0)

{

if ((pageIndex + 1) > totalPages)

pageIndex = totalPages - 1;

}

else

{

pageIndex = 0;

}

this.GridView1.DataBind();

int page_Count = totalPages;

int page_Current = pageIndex;

Page02_1.Page_Count = page_Count;

Page02_1.Page_Size = PageSize;

Page02_1.Page_Current = page_Current;

}

3.Minutepage函数

/// <summary>

/// 功能：分页

/// 作者：PUKE

/// 完成时间：2007-05-28

/// 版权：pukesys@tom.com

/// </summary>

/// <param name="tblName">表名</param>

/// <param name="fldName">主键字段名</param>

/// <param name="PageSize">页尺寸</param>

/// <param name="PageIndex">页码</param>

/// <param name="IsReCount">返回记录总数, 非 0 值则返回</param>

/// <param name="OrderType">设置排序类型, 非 0 值则降序</param>

/// <param name="strWhere">查询条件 (注意: 不要加 where)</param>

/// <returns>ds</returns>

public DataSet Minutepage(string tblName,string fldName,int PageSize,int PageIndex,int IsReCount,int OrderType,string strWhere)

{

SqlParameter[] parameters = {

new SqlParameter("@tblName", SqlDbType.VarChar,255),

new SqlParameter("@fldName",SqlDbType.VarChar,255),

new SqlParameter("@PageSize", SqlDbType.Int),

new SqlParameter("@PageIndex", SqlDbType.Int),

new SqlParameter("@IsReCount",SqlDbType.Bit),

new SqlParameter("@OrderType",SqlDbType.Bit),

new SqlParameter("@strWhere",SqlDbType.VarChar,1000)

};

parameters[0].Value = tblName;

parameters[1].Value = fldName;

parameters[2].Value = PageSize;

parameters[3].Value = PageIndex;

parameters[4].Value = IsReCount;

parameters[5].Value = OrderType;

parameters[6].Value = strWhere;

return DbHelperSQL.RunProcedure("PR_MinutePage", parameters, "ds");

}

posted on 2007-04-25 13:43 秦岭过客阅读(1395) 评论(0) 编辑收藏举报