< body onload = " JavaScript:form1.TextBox1.focus() " >
< form id = form1 runat = " server " >
< asp:TextBox id = " TextBox1 "  runat = " server " ></ asp:TextBox >
</ form >
</ body >

<% @ Page Language = " C# "  AutoEventWireup = " true "  CodeFile = " test.aspx.cs "  Inherits = " test "   %>

<! 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 > 无标题页 </ title >
       < script language = javascript >    
       <!--    
      function   setfocus()   
       ... {   
      if(event.keyCode==13)   
      ...{   
      event.keyCode=9   
      }   
      }    
        
       -->    
       </ script >  
</ head >
< body >    
   < form id = " Form1 "    onkeydown = " setfocus() "    runat = " server " >    
   < DIV align = " left " >    
   < asp:TextBox   id = " TextBox1 "    runat = " server "     ></ asp:TextBox ></ DIV >    
   < DIV align = " left " >    
   < asp:TextBox   id = " TextBox2 "    runat = " server " ></ asp:TextBox ></ DIV >    
   < DIV   align = " left " >    
   < asp:TextBox   id = " TextBox3 "    runat = " server " ></ asp:TextBox ></ DIV >    
   < DIV  align = " left " >& nbsp; </ DIV >    
   < DIV   align = " left " >    
   < asp:Button id = " Button1 "  runat = " server "  Text = " Button " ></ asp:Button ></ DIV >    
   </ form >    
</ body >    
</ html >