如何在客户端调用服务端代码

<% @ 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