在ASP.Net2.0中多个通过回车键提交表单时执行特定的button按钮事件

<asp:Panel   id=Panel1   runat=server   DefaultButton="Button1">  
  <asp:TextBox   id=TextBox1   runat=server/>  
  <asp:Button   id=Button1   runat=server   Text="Button1"/>  
</asp:Panel>  




============================附：另外一种作为的解决方法===================================


  写一个脚本,在文本框中加一个OnKeyDown的事件  
   
  <form   id="Form1"   method="post"   runat="server">  
   
  <asp:TextBox   id=TextBox1   runat="server"   OnKeyDown="SetFocus2()"></asp:TextBox>  
  <asp:TextBox   id=TextBox2   runat="server"   OnKeyDown="SetFocus2()"></asp:TextBox>  
  <asp:Button   id=Button1   runat="server"   Text="Button"></asp:Button>  
  <asp:ImageButton   id=ImageButton1   runat="server"   ImageUrl="idx_46_x.gif"></asp:ImageButton>  
  <asp:Label   id=Label1   runat="server">Label</asp:Label>  
   
  </form>  
   
  <script   language="javascript">  
  function   SetFocus2()  
  {  
  switch(window.event.keyCode)  
  {  
  case   13:  
  document.all.ImageButton1.focus();  
  }  
  }  
  </script>  
   
  判断是按Enten键(window.event.keyCode   为13)时执行