<% @ Page language="c#" Codebehind="WebForm2.aspx.cs" AutoEventWireup="false" Inherits="UTF8Test.WebForm2"  %>

<! DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"  >

< HTML >

  < HEAD >

   < title > WebForm2 </ title >

   < meta  content ="Microsoft Visual Studio .NET 7.1"  name ="GENERATOR" >

   < meta  content ="C#"  name ="CODE_LANGUAGE" >

   < meta  content ="javascript"  name ="vs_defaultClientScript" >

   < meta  content ="http://schemas.microsoft.com/intellisense/ie5" ; name ="vs_targetSchema" >

   < script  language ="javascript"  event ="onkeydown"  for ="TextBox1" >

      

   if(event.keyCode==13)<!-- 注意大小写-->

   {

    __doPostBack('Button1','');

    return false;<!--很重要，不然会选择Button1进行提交  -->

   }

   

   </ script >

   < script  language ="javascript"  event ="onkeydown"  for ="TextBox2" >

      

   if(event.keyCode==13)

   {

    __doPostBack('Button2','');

    return false;<!--很重要，不然会选择Button1进行提交  -->

   }

   

   </ script >

   < script  language ="javascript" >

    function keypress()

    {

     if(event.keyCode==13)

   {

      

    __doPostBack('Button3','');

    event.keyCode=0; <!--很重要，不然会选择Button1进行提交  -->

    return false;<!--很重要，不然会选择Button1进行提交  -->

   }

    }

   </ script >

  </ HEAD >

  < body  MS_POSITIONING ="GridLayout" >

   < form  id ="Form1"  method ="post"  runat ="server" >

    < input  type ="hidden"  name ="__EVENTTARGET" >   < input  type ="hidden"  name ="__EVENTARGUMENT" >

    < script  language ="javascript"  type ="text/javascript" >

<!--

 function __doPostBack(eventTarget, eventArgument) {

  var theform;

  if (window.navigator.appName.toLowerCase().indexOf("microsoft") > -1) {

   theform = document.Form1;

  }

  else {

   theform = document.forms["Form1"];

  }

  theform.__EVENTTARGET.value = eventTarget.split("$").join(":");

  theform.__EVENTARGUMENT.value = eventArgument;

  theform.submit();

 }

// -->

    </ script >

    < asp:button  id ="Button1"  style ="Z-INDEX: 101; LEFT: 192px; POSITION: absolute; TOP: 88px"  runat ="server"

    Text ="Button1" ></ asp:button >< asp:textbox  id ="TextBox1"  style ="Z-INDEX: 102; LEFT: 16px; POSITION: absolute; TOP: 88px"  runat ="server" ></ asp:textbox >

    < asp:Button  id ="Button2"  style ="Z-INDEX: 103; LEFT: 192px; POSITION: absolute; TOP: 120px"  runat ="server"

    Text ="Button2" ></ asp:Button >

    < asp:TextBox  id ="TextBox2"  style ="Z-INDEX: 104; LEFT: 16px; POSITION: absolute; TOP: 120px"  runat ="server" ></ asp:TextBox >

    < asp:TextBox  id ="TextBox3"  style ="Z-INDEX: 105; LEFT: 16px; POSITION: absolute; TOP: 152px"  runat ="server" ></ asp:TextBox >

    < asp:Button  id ="Button3"  style ="Z-INDEX: 106; LEFT: 192px; POSITION: absolute; TOP: 152px"  runat ="server"

    Text ="Button3" ></ asp:Button >

    < asp:Label  id ="Label1"  style ="Z-INDEX: 107; LEFT: 24px; POSITION: absolute; TOP: 56px"  runat ="server" ></ asp:Label ></ form >

  </ body >

</ HTML >

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  UTF8Test

{

 /// <summary>

 /// WebForm2 的摘要说明。

 /// </summary>

 public class WebForm2 : System.Web.UI.Page

 {

  protected System.Web.UI.WebControls.TextBox TextBox1;

  protected System.Web.UI.WebControls.Button Button2;

  protected System.Web.UI.WebControls.TextBox TextBox2;

  protected System.Web.UI.WebControls.TextBox TextBox3;

  protected System.Web.UI.WebControls.Button Button3;

  protected System.Web.UI.WebControls.Label Label1;

  protected System.Web.UI.WebControls.Button Button1;

 

  private void Page_Load(object sender, System.EventArgs e)

  {

   // 在此处放置用户代码以初始化页面

   TextBox3.Attributes.Add("onkeypress","keypress()");//注意大小写

  }

  Web 窗体设计器生成的代码

  private void Button1_Click(object sender, System.EventArgs e)

  {

   Label1.Text = "1";

  }

  private void Button2_Click(object sender, System.EventArgs e)

  {

   Label1.Text = "2";

  }

  private void Button3_Click(object sender, System.EventArgs e)

  {

   Label1.Text = "3";

  }

 }

}

本文转自高海东博客园博客，原文链接：http://www.cnblogs.com/ghd258/archive/2005/10/23/260240.html，如需转载请自行联系原作者