前台代码（ApplyListBox.aspx）：
< %@ Page language="c#" Codebehind="ApplyListBox.aspx.cs" AutoEventWireup="false" Inherits="ApplyListBox.WebForm1" %>
< !DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
< HTML>
 < HEAD>
  < title>WebForm1< /title>
  < meta name="GENERATOR" Content="Microsoft Visual Studio 7.0">
  < meta name="CODE_LANGUAGE" Content="C#">
  < meta name="vs_defaultClientScript" content="JavaScript">
  < meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
 < /HEAD>
 < body MS_POSITIONING="GridLayout">
  < form id="Form1" method="post" runat="server">
   < asp:ListBox id="ListBox1" style="Z-INDEX: 100; LEFT: 256px; POSITION: absolute; TOP: 120px" runat="server" SelectionMode="Multiple" Width="73px" Height="134px">
    < asp:ListItem Value="1">1< /asp:ListItem>
    < asp:ListItem Value="2">2< /asp:ListItem>
    < asp:ListItem Value="3">3< /asp:ListItem>
    < asp:ListItem Value="4">4< /asp:ListItem>
    < asp:ListItem Value="5">5< /asp:ListItem>
    < asp:ListItem Value="6">6< /asp:ListItem>
   < /asp:ListBox>
   < asp:Label id="Label2" style="Z-INDEX: 107; LEFT: 448px; POSITION: absolute; TOP: 96px" runat="server">列表框2< /asp:Label>
   < asp:ListBox id="ListBox2" style="Z-INDEX: 101; LEFT: 440px; POSITION: absolute; TOP: 120px" runat="server" SelectionMode="Multiple" Width="72px" Height="134px">< /asp:ListBox>
   < asp:Button id="Upbtn" style="Z-INDEX: 102; LEFT: 360px; POSITION: absolute; TOP: 136px" runat="server" Text="上移">< /asp:Button>
   < asp:Button id="Movebtn" style="Z-INDEX: 103; LEFT: 360px; POSITION: absolute; TOP: 176px" runat="server" Text="转移">< /asp:Button>
   < asp:Button id="Downbtn" style="Z-INDEX: 104; LEFT: 360px; POSITION: absolute; TOP: 216px" runat="server" Text="下移">< /asp:Button>
   < asp:Label id="Label1" style="Z-INDEX: 106; LEFT: 264px; POSITION: absolute; TOP: 96px" runat="server">列表框1< /asp:Label>
  < /form>
 < /body>
< /HTML>
后台代码（ApplyListBox.aspx.cs）：
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
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 ApplyListBox
{
 /// < summary>
 /// WebForm1 的摘要说明。
 /// < /summary>
 public class WebForm1 : System.Web.UI.Page
 {
  protected System.Web.UI.WebControls.ListBox ListBox1;
  protected System.Web.UI.WebControls.ListBox ListBox2;
  protected System.Web.UI.WebControls.Button Upbtn;
  protected System.Web.UI.WebControls.Label Label1;
  protected System.Web.UI.WebControls.Label Label2;
  protected System.Web.UI.WebControls.Button Movebtn;
  protected System.Web.UI.WebControls.Button Downbtn;
 
  private void Page_Load(object sender, System.EventArgs e)
  {

  }

  #region Web Form Designer generated code
  override protected void OnInit(EventArgs e)
  {
   //
   // CODEGEN：该调用是 ASP.NET Web 窗体设计器所必需的。
   //
   InitializeComponent();
   base.OnInit(e);
  }
  
  /// < summary>
  /// 设计器支持所需的方法 - 不要使用代码编辑器修改
  /// 此方法的内容。
  /// < /summary>
  private void InitializeComponent()
  {   
   this.Upbtn.Click += new System.EventHandler(this.Upbtn_Click);
   this.Movebtn.Click += new System.EventHandler(this.Movebtn_Click);
   this.Downbtn.Click += new System.EventHandler(this.Downbtn_Click);
   this.Load += new System.EventHandler(this.Page_Load);

  }
  #endregion

  private void Movebtn_Click(object sender, System.EventArgs e)
  {  
   int Count = ListBox1.Items.Count;
   int Index = 0;
   for(int i=0;i< Count-1;i++)
   {
    ListItem Item = ListBox1.Items[Index];
    if(ListBox1.Items[Index].Selected == true)
    {
     ListBox1.Items.Remove(Item);
     ListBox2.Items.Add(Item);
     Index--;
    }
    Index++;
   }
  }

  private void Upbtn_Click(object sender, System.EventArgs e)
  {
   //若不是第一行则上移
   if( ListBox1.SelectedIndex > 0 )
   {
    string name = ListBox1.SelectedItem.Text;
    string ID = ListBox1.SelectedItem.Value;
    int index = ListBox1.SelectedIndex;
    ListBox1.SelectedItem.Text = ListBox1.Items[index-1].Text;
    ListBox1.SelectedItem.Value = ListBox1.Items[index-1].Value;
    ListBox1.Items[index-1].Text = name;
    ListBox1.Items[index-1].Value = ID;
    ListBox1.SelectedIndex --;
   }
  }

  private void Downbtn_Click(object sender, System.EventArgs e)
  {
   //若不是最后一行则下移
   if( ListBox1.SelectedIndex >= 0 && ListBox1.SelectedIndex < ListBox1.Items.Count-1 )
   {
    string name = ListBox1.SelectedItem.Text;
    string ID = ListBox1.SelectedItem.Value;
    int index = ListBox1.SelectedIndex;
    ListBox1.SelectedItem.Text = ListBox1.Items[index+1].Text;
    ListBox1.SelectedItem.Value = ListBox1.Items[index+1].Value;
    ListBox1.Items[index+1].Text = name;
    ListBox1.Items[index+1].Value = ID;
    ListBox1.SelectedIndex ++;
   }
  }
 }
}