DataList 控件分页操作


答案：aspx 源文件

<%@ Page language="c#" Codebehind="radionj_list.aspx.cs" AutoEventWireup="false" Inherits="radio.radio.radionj_list" %> 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" > 
<HTML> 
<HEAD> 
<title>NJ列表</title> 
<meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1"> 
<meta name="CODE_LANGUAGE" Content="C#"> 
<meta name="vs_defaultClientScript" content="javascript"> 
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5"> 
<LINK href=><style> 
.normal 
{ 
font-weight:normal 
} 
.bigsize 
{ 
font-weight:bold; 
} 

<!-- asthlon发表于 05 3-25 -->
</style> 

</HEAD> 
<body MS_POSITIONING="GridLayout"> <!--<table border="0" cellspacing="0" cellpadding="0"> 

</table>--> 
<form id="Form1" method="post" runat="server"> 
<div align="center"> 
<asp:datalist id="info_data" runat="server" ShowFooter="False" GridLines="Both" BorderColor="Control" 
RepeatColumns="2" RepeatDirection="Horizontal" HorizontalAlign="Center" ShowHeader="False" 
CellPadding="5" BorderWidth="0px" RepeatLayout="Flow"> 
<ItemStyle HorizontalAlign="Center" Height="120px" Width="140px" VerticalAlign="Middle"></ItemStyle> 
<ItemTemplate> 
<table cellspacing="0" cellpadding="0"> 
<tr> 
<td><img src=http://old.zzzyk.com/article/Article/".images/r_7_11.jpg"></td> 
<td valign="middle" bgcolor="#fecc00" align="center"><a href=><div style="overflow:hidden;width:90px;height:90px;"><img width=90 src='<%# Return_Nj_Detail((string)DataBinder.Eval(Container.DataItem,"content"),1)%>'></div> 
</a> 
</td> 
<Td><img src=http://old.zzzyk.com/article/Article/".images/r_7_13.jpg"></Td> 
</tr> 
</table> 
</ItemTemplate> 
</asp:datalist> 
<div style="PADDING-LEFT:40px"><FONT color="#000000">共 
<asp:label id="list_num" runat="server"></asp:label>条记录</FONT> 
<asp:label id="list_at" runat="server"></asp:label><FONT color="#000000">&nbsp;</FONT><asp:linkbutton id="p0" runat="server" CommandName="p0"><font face="Webdings">9</font></asp:linkbutton> 
<asp:linkbutton id="p1" runat="server" CommandName="p1"> 
<font face="Webdings">7</font></asp:linkbutton> 
[<asp:PlaceHolder id="p_pagelist" runat="server"></asp:PlaceHolder>] 
<asp:linkbutton id="p2" runat="server" CommandName="p2"> 
<font face="Webdings">8</font></asp:linkbutton> 
<asp:linkbutton id="p3" runat="server" CommandName="p3"> 
<font face="Webdings">:</font></asp:linkbutton> 
<!-- 
&nbsp;<asp:textbox id="atTxt" onkeyup="this.value=this.value.replace(/\D/g,'')" runat="server" Width="35px" 
onafterpaste="this.value=this.value.replace(/\D/g,'')"></asp:textbox><asp:button id="Go_TO" runat="server" Text="GO"></asp:button> 
--> 
</div> 
</div> 
</form> 
</body> 
</HTML> 


.cs 源文件

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

namespace radio.radio
{
 /// <summary>
 /// asthlon发表于 05 3-25。
 /// </summary>
 public class radionj_list : System.Web.UI.Page
 {
  protected System.Web.UI.WebControls.DataList info_data;
  protected System.Web.UI.WebControls.Label list_num;
  protected System.Web.UI.WebControls.Label list_at;
  protected System.Web.UI.WebControls.LinkButton p0;
  protected System.Web.UI.WebControls.LinkButton p1;
  protected System.Web.UI.WebControls.LinkButton p2;
  protected System.Web.UI.WebControls.PlaceHolder p_pagelist;
  protected System.Web.UI.WebControls.LinkButton p3;
 
  private void Page_Load(object sender, System.EventArgs e)
  {
   if(!IsPostBack)
   {
    WebUse.SqlEC.DataBase dItem = new WebUse.SqlEC.DataBase();
    string sql = "select count(id) from radio_dj";
    ViewState["curpage"] = 0;
    ViewState["pcount"] = dItem.StrSql_TxtSql(sql);
    Bind_List();
    Post_Control();
   }
   else
   {
    Post_Control();
   }
   // 在此处放置用户代码以初始化页面
  }
  private void Bind_List()
  {
   int Psize = 10;
   int sIndex,len,at;
   float f;
   WebUse.SqlEC.DataBase dItem = new WebUse.SqlEC.DataBase();
   len = Convert.ToInt32(Math.Ceiling(Convert.ToInt32(ViewState["pcount"]) / Psize));//+1
   f = Convert.ToSingle(ViewState["pcount"]) / Psize ;
   if(f > Convert.ToInt32(Convert.ToInt32(ViewState["pcount"]) / Psize))
   {
    len = len + 1;
   }


   sIndex = Convert.ToInt32(ViewState["curpage"]) * Psize;
   SqlDataAdapter adp = new System.Data.SqlClient.SqlDataAdapter();
   DataSet ds = new DataSet();
   adp = dItem.Read_Adapter_NoArg("radio_dj_sel");//dItem.Read_Adapter_TxtSql(sql);
   adp.Fill(ds,sIndex,Psize,"show");
   info_data.DataSource = ds;
   info_data.DataBind();

   at = Convert.ToInt32(ViewState["curpage"]);
   if(at <=0)
   {
    p0.Enabled = false;
    p1.Enabled = false;
   }
   else
   {
    p1.Enabled = true;
    p0.Enabled = true;
   }
   if(at >= len-1)
   {
    p2.Enabled = false;
    p3.Enabled = false;
   }
   else
   {
    p2.Enabled = true;
    p3.Enabled = true;
   }
   list_num.Text = Convert.ToString(ViewState["pcount"]);
   list_at.Text = Convert.ToString(sIndex / Psize + 1) + "/" + len.ToString() ;
   Clear_LinkButton_Style();
  }
  private void go_page(object sender, System.Web.UI.WebControls.CommandEventArgs e)
  {
   string cmdName;
   int sIndex = Convert.ToInt32(ViewState["curpage"]);
   int len = Convert.ToInt32(Math.Ceiling(Convert.ToInt32(ViewState["pcount"]) / 10));
   cmdName = e.CommandName;
   switch(cmdName)
   {
    case "p0":
     sIndex = 0;
     break;
    case "p1":
     sIndex -= 1;
     break;
    case "p2":
     sIndex +=1;
     break;
    case "p3":
     sIndex = len;
     break;
   }
   ViewState["curpage"] = sIndex;
   Bind_List();
  }

  private void Post_Control()<
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