asp.net ajax 1.0,hello world程序

来源：作者：出处：巧巧读书 2007-10-06 进入讨论组

asp.net ajax跟atlas有了很大不同。从这个简单的例子中可以看出几点。
<1>新建一个asp.net ajax-enabled web site
<2>页面布局。Server Controls的标签前缀(Tag Prefix)由atlas变为asp;

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="HelloWorld" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html>
<head runat="server">
    <title>Hello</title>
</head>
<body>
    <form id="form1" runat="server">
        <asp:ScriptManager ID="ScriptManager1" runat="server">
        <Services>
        <asp:ServiceReference Path="~/HelloWorldService.asmx" />
        </Services>
        </asp:ScriptManager>
        <div>
        你的名字:
        <input type="text" maxlength="20" id="name" />
        <input type="button" id="button1" value="问候" onclick="SayHello()" />
        <div id="result"></div>
        </div>
    </form>
    </body>
</html><3>客户端脚本。调用服务的方法有些许改变。可以指定默认的回调方法。
<script type="text/javascript">
    function SayHello()
    {
    var fs = HelloWorldService;
    fs.set_defaultSucceededCallback(OnShow);
    fs.HelloWorld(document.getElementById("name").value);
    }
    function OnShow(result)
    {
    var s = document.getElementById("result");
    s.innerText = result;
    }
</script>

<4>HelloWorldService服务代码。为了能使服务被asp.net ajax客户端调用，必须给服务指明[ScriptService]属性（为了使用这一属性，需要引用Microsoft.Web.Script.Services命名空间）。
1using System;
2using System.Web.Services;
3using System.Web.Services.Protocols;
4using Microsoft.Web.Script.Services;
5
6[WebService(Namespace = "http://tempuri.org/")]
7[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
8[ScriptService]
9public class HelloWorldService : System.Web.Services.WebService {
10
11    public HelloWorldService () {
12
13        //Uncomment the following line if using designed components
14        //InitializeComponent();
15    }
16
17    [WebMethod]
18    public string HelloWorld(string name) {
19        string hello = String.IsNullOrEmpty(name) ? "无名氏" : name;
20        hello += "你好,当前服务器时间是：";
21        hello += DateTime.Now.ToUniversalTime();
22        return hello;
23    }
24
25}
http://www.cnblogs.com/sharpaxe/archive/2006/10/24/538395.html