ASP.NET存储过程实现分页 ASP.NET存储过程实现分页效果(三层架构)

时间:2021-03-22 wangjingjing1014 人气:0

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实现效果：
文本框内输入跳转的页数，点击GO会跳转到该页

首先在项目下加入BLL,DAL,DataAccess,MODEL类库
1、前台界面

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="原始刷新分页.aspx.cs" Inherits="分页.原始刷新分页" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
 <title></title>
 <script src="js/Jquery1.7.js" type="text/javascript"></script>
 <script type="text/javascript">
  $(function () {
   $('#txtPageindex').focus(function () {
    $(this).val("");
   })
  })
 </script>
</head>
<body>
 <form id="form1" runat="server">
 <div>
  <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False">
   <Columns>
    <asp:BoundField DataField="Id" HeaderText="编号" />
    <asp:BoundField DataField="NewsTitle" HeaderText="新闻标题" />
    <asp:BoundField DataField="NewsContent" HeaderText="新闻内容" />
    <asp:BoundField DataField="CreateTime" 
     DataFormatString="{0:yyyy-MM-dd hh:mm:ss}" HeaderText="创建时间" />
   </Columns>
  </asp:GridView>
 </div>
 <div>
   <asp:LinkButton ID="btnFirst" runat="server" onclick="btnFirst_Click">第一页</asp:LinkButton>
  <asp:LinkButton
   ID="btnPre" runat="server" onclick="btnPre_Click">上一页</asp:LinkButton>
  <asp:LinkButton ID="btnNext"
    runat="server" onclick="btnNext_Click">下一页</asp:LinkButton>
  <asp:LinkButton ID="btnLast" runat="server" onclick="btnLast_Click">最后一页</asp:LinkButton><asp:TextBox
     ID="txtPageindex" runat="server"></asp:TextBox>
  <asp:LinkButton ID="LinkButton5" runat="server" onclick="LinkButton5_Click">Go</asp:LinkButton>
 </div>
 </form>
</body>
</html>

2、后台代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
namespace 分页
{
 public partial class 原始刷新分页 : System.Web.UI.Page
 {
  int pagesize = 10;
  protected void Page_Load(object sender, EventArgs e)
  {
   
   if (!IsPostBack)
   {
    ViewState["pageindex"] = 1;
    GetLastPageindex();
    LoadData();
   }
  }

  private void GetLastPageindex()
  {
   BLL.T_News1 bnews = new BLL.T_News1();
   int totalcount = bnews.GetRecordCount("");
   if (totalcount % pagesize == 0)
   {
    ViewState["lastpageindex"] = totalcount / pagesize;
   }
   else { ViewState["lastpageindex"] = totalcount / pagesize+1; }
  
  }
  private void LoadData()
  {
   BLL.T_News1 bnews = new BLL.T_News1();
   DataTable dt = bnews.GetListDataTable(pagesize,Convert.ToInt32(ViewState["pageindex"]));
   this.GridView1.DataSource = dt;
   this.GridView1.DataBind();
   
   }
  protected void btnFirst_Click(object sender, EventArgs e)
  {
   ViewState["pageindex"] = 1;
   LoadData();
  }
  protected void btnPre_Click(object sender, EventArgs e)
  {
   int pageindex = Convert.ToInt32(ViewState["pageindex"]);
   if (pageindex > 1)
   {
    pageindex--;
    ViewState["pageindex"] = pageindex;
    LoadData();
   }


  }
  protected void btnNext_Click(object sender, EventArgs e)
  {
   int pageindex = Convert.ToInt32(ViewState["pageindex"]);
   if (pageindex < Convert.ToInt32(ViewState["lastpageindex"]))
   {
    pageindex++;
    ViewState["pageindex"] = pageindex;
    LoadData();
   }
  }
  protected void btnLast_Click(object sender, EventArgs e)
  {
    ViewState["pageindex"] = ViewState["lastpageindex"];
   LoadData();
  }
  
  protected void LinkButton5_Click(object sender, EventArgs e)
  {
   int result;
   if (int.TryParse(txtPageindex.Text, out result) == true)
   {
    ViewState["pageindex"] = txtPageindex.Text.Trim();
    LoadData();
   }
   else { txtPageindex.Text = "请输入合法的数字"; }
  }
 }
}

3、数据库存储过程

declare @pagesize int;
declare @pageindex int;
SELECT * FROM (select ROW_NUMBER() over(order by Id) as rownumber,* from T_News1)T
WHERE rownumber>(@pageindex-1)*@pagesize AND rownumber<=@pagesize*@pageindex

GO 
CREATE PROC pro_fenye
@pagesize int,
@pageindex int

as
select * from(select ROW_NUMBER() over(order by Id) as rownumber,* from T_News1)T 
WHERE rownumber>(@pageindex-1)*@pagesize AND rownumber<=@pageindex*@pagesize
GO
exec pro_fenye 2,5

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