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><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}
using System;2
using System.Web.Services;3
using System.Web.Services.Protocols;4
using Microsoft.Web.Script.Services;5
6
[WebService(Namespace = "http://tempuri.org/")]7
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]8
[ScriptService]9
public 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
}
