Code
<form   id="Form1"   method="post"   runat="server">   
  <asp:Button   id="Button1"   style="Z-INDEX:   101;   LEFT:   584px;   POSITION:   absolute;   TOP:   112px"   runat="server"   
  Text="Button">asp:Button>   
  <asp:DataGrid   id="DataGrid1"   runat="server"   AutoGenerateColumns="False"   Width="392px">   
  <SelectedItemStyle   BackColor="#FFFFC0">SelectedItemStyle>   
  <Columns>   
  <asp:TemplateColumn>   
  <ItemTemplate>   
  <asp:LinkButton   id="lbtnUp"   runat="server"   CommandName="UP">上移↑asp:LinkButton>&nbsp;   
  <asp:LinkButton   id="lbtnDown"   runat="server"   CommandName="DOWN">↓下移asp:LinkButton>   
  ItemTemplate>   
  asp:TemplateColumn>   
  <asp:BoundColumn   Visible="False"   DataField="id">asp:BoundColumn>   
  <asp:BoundColumn   DataField="content">asp:BoundColumn>   
  <asp:BoundColumn   DataField="remark">asp:BoundColumn>   
  <asp:BoundColumn   Visible="False"   DataField="pri">asp:BoundColumn>   
  Columns>   
  asp:DataGrid>   
  form>   
  *********************************************   
  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;   
  using   System.IO;   
  using   System.Text;   
  using   System.Threading;   
    
  namespace   bsTest2005_8_16.CSDN   
  {   
  ///      
  ///   WebForm3   的摘要说明。   
  ///      
  public   class   WebForm3   :   System.Web.UI.Page   
  {   
  protected   System.Web.UI.WebControls.Panel   Panel1;   
  protected   System.Web.UI.WebControls.TextBox   TextBox1;   
  protected   System.Web.UI.WebControls.Button   Button1;   
  protected   System.Web.UI.WebControls.DataGrid   DataGrid1;   
  protected   System.Web.UI.WebControls.LinkButton   LinkButton1;   
    
    
  private   void   Page_Load(object   sender,   System.EventArgs   e)   
  {   
  //   在此处放置用户代码以初始化页面   
  if(!IsPostBack)   
  {   
  BindTestData();   
  }   
    
  }   
    
  private   void   BindTestData()   
  {   
  DataTable   dt   =     CreateTable();   
    
  dt.Rows.Add(new   object[]{1,"aaa","AAA",2});   
  dt.Rows.Add(new   object[]{2,"bbb","BBB",1});   
  dt.Rows.Add(new   object[]{3,"ccc","CCC",5});   
  dt.Rows.Add(new   object[]{4,"ddd","DDD",4});   
  dt.Rows.Add(new   object[]{5,"eee","eee",3});   
  dt.AcceptChanges();   
    
  DataView   view   =   dt.DefaultView;   
  view.Sort   =   "PRI";   
    
  this.DataGrid1.DataSource   =   view;   
  this.DataGrid1.DataBind();   
  }   
    
    
  private   DataTable   CreateTable()   
  {   
  DataTable   dt   =   new   DataTable();   
  dt.Columns.Add("ID");   
  dt.Columns.Add("Content");   
  dt.Columns.Add("Remark");   
  dt.Columns.Add("PRI");   
  return   dt;   
  }   
    
  #region   Web   窗体设计器生成的代码   
  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);   
  }   
    
  ///      
  ///   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。   
  ///      
  private   void   InitializeComponent()   
  {           
  this.Button1.Click   +=   new   System.EventHandler(this.Button1_Click);   
  this.DataGrid1.ItemCommand   +=   new   System.Web.UI.WebControls.DataGridCommandEventHandler(this.DataGrid1_ItemCommand);   
  this.DataGrid1.ItemDataBound   +=   new   System.Web.UI.WebControls.DataGridItemEventHandler(this.DataGrid1_ItemDataBound);   
  this.Load   +=   new   System.EventHandler(this.Page_Load);   
    
  }   
  #endregion   
    
  private   void   Button1_Click(object   sender,   System.EventArgs   e)   
  {   
  //最后把DataGrid里的数据保存到数据库   
  }   
    
  private   void   DataGrid1_ItemCommand(object   source,   System.Web.UI.WebControls.DataGridCommandEventArgs   e)   
  {   
  if(e.CommandName   ==   "UP"   ||   e.CommandName=="DOWN")   
  {   
  int   index   =   e.Item.ItemIndex;   
    
  if(e.CommandName   ==   "UP")   index-=1;   
  else   index+=1;   
    
  if(index<0   ||   index==DataGrid1.Items.Count)   return;   
    
  DataTable   dt   =   CreateTable();   
    
  for(int   i=0;i<DataGrid1.Items.Count;i++)   
  {   
  if(i!=e.Item.ItemIndex)   
  {   
  DataGridItem   row   =   DataGrid1.Items[i];   
  dt.Rows.Add(new   object[]{row.Cells[1].Text,row.Cells[2].Text,row.Cells[3].Text,i+1});   
  }   
  }   
    
  DataRow   moveRow   =   dt.NewRow();   
  moveRow[0]   =   e.Item.Cells[1].Text;   
  moveRow[1]   =   e.Item.Cells[2].Text;   
  moveRow[2]   =   e.Item.Cells[3].Text;   
  moveRow[3]   =   index+1;   
    
  dt.Rows.InsertAt(moveRow,index);   
  dt.AcceptChanges();   
    
  this.DataGrid1.SelectedIndex   =   index;   
  this.DataGrid1.DataSource   =   dt;   
  this.DataGrid1.DataBind();   
  }   
  }   
    
  private   void   DataGrid1_ItemDataBound(object   sender,   System.Web.UI.WebControls.DataGridItemEventArgs   e)   
  {   
  if(e.Item.ItemIndex   ==0)   
  {   
  ((LinkButton)e.Item.FindControl("lbtnUp")).Enabled   =   false;   
  }   
  else     
  {   
  int   totalItems   =   0;   
  if(DataGrid1.DataSource   is   DataView)   totalItems=((DataView)DataGrid1.DataSource).Count;   
  else   if(DataGrid1.DataSource   is   DataTable)   totalItems=((DataTable)DataGrid1.DataSource).Rows.Count;   
    
  if(e.Item.ItemIndex   ==   totalItems-1)   
  ((LinkButton)e.Item.FindControl("lbtnDown")).Enabled   =   false;   
  }   
  }   
    
  }   
    
  }