asp.net 分页sql语句(结合aspnetpager)

数据库操作类：

复制代码 代码如下:

///

/// 取得总数
///

///
public string getTotal()
{
StringBuilder sb = new StringBuilder();
sb.Append("select count(*) total from Test");
DataTable dt = DBHelper.ExecuteDt(sb.ToString());
return dt.Rows[0][0].ToString();
}
///

/// 根据当前页码，每页条数，取得相应数据。
///

/// 每页显示条数
/// 当前页码
///
public DataTable getPagesData(int pageNum, int currentPage)
{
StringBuilder sb = new StringBuilder();
sb.Append("select top " + pageNum + " * from Test where ");
sb.Append("ID not in (select top " + pageNum * currentPage + " ID from Test)");
return DBHelper.ExecuteDt(sb.ToString());
}

前台：

复制代码 代码如下:

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="sqlPager_Default" %>
<%@ Register Assembly="AspNetPager" Namespace="Wuqi.Webdiyer" TagPrefix="webdiyer" %>

后台：

复制代码 代码如下:

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 sqlPager_Default : System.Web.UI.Page
{
BLL.Test test = new BLL.Test();
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
AspNetPager1.RecordCount = Convert.ToInt32(test.getTotal());//此属性保存总记录数..
Bind();
}
}
private void Bind()
{
this.gvSql.DataSource = test.getPagesData(Convert.ToInt32(AspNetPager1.PageSize), AspNetPager1.CurrentPageIndex - 1);
this.gvSql.DataBind();
}
protected void AspNetPager1_PageChanged(object sender, EventArgs e)
{
Bind();
}
}