版本为AJAX November CTP。
三个示例分别为：
1 带参数的WS方法
2 不带参数的WS方法
3 参数类型为DataTable的WS方法
一、WebMethod
注意要点：
1 WebMethod类需要添加命名空间 Microsoft.Web.Script.Services，此空间需要引用Microsoft.Web.Preview.dll
2 类声明加入标签 [ScriptService]
3 在Asp.net 2.0里可以直接用DataTable作为返回类型了，但是需要在Web.config文件添加序列化转换器的属性。DataSet、DataTable、DataRow均有转换器
1 <system.web.extensions>
2 <scripting>
3 <webServices>
4 <jsonSerialization>
5 <converters>
6 <add name="DataSetConverter" type="Microsoft.Web.Preview.Script.Serialization.Converters.DataSetConverter, Microsoft.Web.Preview"/>
7 <add name="DataRowConverter" type="Microsoft.Web.Preview.Script.Serialization.Converters.DataRowConverter, Microsoft.Web.Preview"/>
8 <add name="DataTableConverter" type="Microsoft.Web.Preview.Script.Serialization.Converters.DataTableConverter, Microsoft.Web.Preview"/>
9 </converters>
10 </jsonSerialization>
11 </webServices>
12 </scripting>
13 </system.web.extensions>
14
2 <scripting>
3 <webServices>
4 <jsonSerialization>
5 <converters>
6 <add name="DataSetConverter" type="Microsoft.Web.Preview.Script.Serialization.Converters.DataSetConverter, Microsoft.Web.Preview"/>
7 <add name="DataRowConverter" type="Microsoft.Web.Preview.Script.Serialization.Converters.DataRowConverter, Microsoft.Web.Preview"/>
8 <add name="DataTableConverter" type="Microsoft.Web.Preview.Script.Serialization.Converters.DataTableConverter, Microsoft.Web.Preview"/>
9 </converters>
10 </jsonSerialization>
11 </webServices>
12 </scripting>
13 </system.web.extensions>
14
WEB服务1：WS1
1 using System;
2 using System.Web;
3 using System.Collections;
4 using System.Web.Services;
5 using System.Web.Services.Protocols;
6 using Microsoft.Web.Script.Services;
7 using System.Data;
8 /**//// <summary>
9 /// WS1 的摘要说明
10 /// </summary>
11 [WebService(Namespace = "http://tempuri.org/")]
12 [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
13 [ScriptService]
14 public class WS1 : System.Web.Services.WebService {
15
16 public WS1 () {
17
18 //如果使用设计的组件，请取消注释以下行
19 //InitializeComponent();
20 }
21
22 [WebMethod]
23 public string ServerTime()
24 {
25 return String.Format("now： {0}", DateTime.Now);
26 }
27
28 [WebMethod]
29 public DataTable GetDataTable()
30 {
31 DataTable dt = new DataTable("Person");
32
33 dt.Columns.Add(new DataColumn("Name", typeof(string)));
34 dt.Columns.Add(new DataColumn("LastName", typeof(string)));
35 dt.Columns.Add(new DataColumn("Email", typeof(string)));
36
37 dt.Rows.Add("he", "sei", livebaby@163.com);
38 dt.Rows.Add("mei", "wu", blog@163.com);
39
40 return dt;
41 }
42 }
43
2 using System.Web;
3 using System.Collections;
4 using System.Web.Services;
5 using System.Web.Services.Protocols;
6 using Microsoft.Web.Script.Services;
7 using System.Data;
8 /**//// <summary>
9 /// WS1 的摘要说明
10 /// </summary>
11 [WebService(Namespace = "http://tempuri.org/")]
12 [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
13 [ScriptService]
14 public class WS1 : System.Web.Services.WebService {
15
16 public WS1 () {
17
18 //如果使用设计的组件，请取消注释以下行
19 //InitializeComponent();
20 }
21
22 [WebMethod]
23 public string ServerTime()
24 {
25 return String.Format("now： {0}", DateTime.Now);
26 }
27
28 [WebMethod]
29 public DataTable GetDataTable()
30 {
31 DataTable dt = new DataTable("Person");
32
33 dt.Columns.Add(new DataColumn("Name", typeof(string)));
34 dt.Columns.Add(new DataColumn("LastName", typeof(string)));
35 dt.Columns.Add(new DataColumn("Email", typeof(string)));
36
37 dt.Rows.Add("he", "sei", livebaby@163.com);
38 dt.Rows.Add("mei", "wu", blog@163.com);
39
40 return dt;
41 }
42 }
43
WEB服务2：WS
1 using System;
2 using System.Web;
3 using System.Collections;
4 using System.Web.Services;
5 using System.Web.Services.Protocols;
6 using Microsoft.Web.Script.Services;
7
8 /**//// <summary>
9 /// http://meil.livebaby.cn
10 /// </summary>
11 [WebService(Namespace = "http://tempuri.org/")]
12 [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
13 [ScriptService]
14 public class WS : System.Web.Services.WebService {
15
16 public WS () {
17
18 //如果使用设计的组件，请取消注释以下行
19 //InitializeComponent();
20 }
21
22 [WebMethod]
23 [ScriptMethod(UseHttpGet = true)]
24 public string HelloWorld(String query)
25 {
26 string inputString = Server.HtmlEncode(query);
27 if (!String.IsNullOrEmpty(inputString))
28 {
29 return String.Format("hello, {0}. ", inputString);
30 }
31 else
32 {
33 return "query string is null or empty";
34 }
35 }
36
37 }
38
2 using System.Web;
3 using System.Collections;
4 using System.Web.Services;
5 using System.Web.Services.Protocols;
6 using Microsoft.Web.Script.Services;
7
8 /**//// <summary>
9 /// http://meil.livebaby.cn
10 /// </summary>
11 [WebService(Namespace = "http://tempuri.org/")]
12 [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
13 [ScriptService]
14 public class WS : System.Web.Services.WebService {
15
16 public WS () {
17
18 //如果使用设计的组件，请取消注释以下行
19 //InitializeComponent();
20 }
21
22 [WebMethod]
23 [ScriptMethod(UseHttpGet = true)]
24 public string HelloWorld(String query)
25 {
26 string inputString = Server.HtmlEncode(query);
27 if (!String.IsNullOrEmpty(inputString))
28 {
29 return String.Format("hello, {0}. ", inputString);
30 }
31 else
32 {
33 return "query string is null or empty";
34 }
35 }
36
37 }
38
二、前台页面：
注意要点：
需要使用的后台WebService的方法均设置在如下位置
1 <asp:ScriptManager ID="ScriptManager1" runat="server">
2 <Services>
3 <asp:ServiceReference Path="~/WS.asmx" />
4 <asp:ServiceReference Path="~/WS1.asmx" />
5 </Services>
6 </asp:ScriptManager>
7 Default页面：
8
9 <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
10
11 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
12 <html xmlns="http://www.w3.org/1999/xhtml">
13 <head runat="server">
14 <title>Untitled Page</title>
15
16 <script language="JavaScript" type="text/javascript" src="js.js">
17 </script>
18
19 </head>
20 <body>
21 <form id="form1" runat="server">
22 <asp:ScriptManager ID="ScriptManager1" runat="server">
23 <Services>
24 <asp:ServiceReference Path="~/WS.asmx" />
25 <asp:ServiceReference Path="~/WS1.asmx" />
26 </Services>
27 </asp:ScriptManager>
28 <div>
29 <asp:Button ID="Button1" runat="server" Text="Button" OnClientClick="dd();return false;" />
30 <div id="time">
31 </div>
32 <div id="List1">
33 <asp:DropDownList ID="ddl1" runat="server" Width="187px">
34 </asp:DropDownList>
35 </div>
36
37 </div>
38 </form>
39 </body>
40 </html>
41
2 <Services>
3 <asp:ServiceReference Path="~/WS.asmx" />
4 <asp:ServiceReference Path="~/WS1.asmx" />
5 </Services>
6 </asp:ScriptManager>
7 Default页面：
8
9 <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
10
11 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
12 <html xmlns="http://www.w3.org/1999/xhtml">
13 <head runat="server">
14 <title>Untitled Page</title>
15
16 <script language="JavaScript" type="text/javascript" src="js.js">
17 </script>
18
19 </head>
20 <body>
21 <form id="form1" runat="server">
22 <asp:ScriptManager ID="ScriptManager1" runat="server">
23 <Services>
24 <asp:ServiceReference Path="~/WS.asmx" />
25 <asp:ServiceReference Path="~/WS1.asmx" />
26 </Services>
27 </asp:ScriptManager>
28 <div>
29 <asp:Button ID="Button1" runat="server" Text="Button" OnClientClick="dd();return false;" />
30 <div id="time">
31 </div>
32 <div id="List1">
33 <asp:DropDownList ID="ddl1" runat="server" Width="187px">
34 </asp:DropDownList>
35 </div>
36
37 </div>
38 </form>
39 </body>
40 </html>
41
三、JavaScript程序:
注意要点：
AJAX November CTP 需要用 eval() 方法将其转换成一个DataTable对象(并且要裁掉最前面的"(")，而AJAX December CTP 支持以下方法转换“Sys.Preview.Data.DataTable.parseFromJson(result)”
1 function dd()
2 {
3 WS.HelloWorld(
4 'hekui',
5 function(result)
6 {
7 alert(result);
8 }
9 );
10 WS1.ServerTime(
11 function(result)
12 {
13 alert(result);
14 var divTime = document.getElementById("time");
15 divTime.innerHTML = result;
16 }
17 );
18 WS1.GetDataTable(
19 function(result)
20 {
21 // 获取到下拉框控件
22 var List = document.getElementById("ddl1");
23
24 //AJAX November CTP 需要用 eval() 方法将其转换成一个DataTable对象(并且要裁掉最前面的"(")
25 var Text= result.dataArray.substring(0,result.dataArray.length -1);
26 var Table = eval( Text);
27
28 //AJAX December CTP 支持以下方法转换
29 // var Table = Sys.Preview.Data.DataTable.parseFromJson(result);
30
31 //清除下拉框原有列表项
32 for (x=List.options.length-1; x > -1; x--)
33 {
34 List.remove(0);
35 }
36
37 //从获取的DataTable添加数据到下拉框列表项
38 for (x=0; x < Table.length; x++ )
39 {
40 //获取每一行
41 var Row = Table[x];
42 //创建一个列表项
43 var option = document.createElement("option");
44 //列表项显示文本赋值
45 option.text = Row.Name + " " + Row.LastName;
46 //列表项选项值赋值
47 option.value = Row.Email;
48
49 //判断浏览器类型，进行项目添加
50 if ( window.navigator.appName.toLowerCase().indexOf("microsoft") > -1)
51 List.add(option);
52 else
53 List.add(option, null);
54 }
55 }
56 );
57 }
58
2 {
3 WS.HelloWorld(
4 'hekui',
5 function(result)
6 {
7 alert(result);
8 }
9 );
10 WS1.ServerTime(
11 function(result)
12 {
13 alert(result);
14 var divTime = document.getElementById("time");
15 divTime.innerHTML = result;
16 }
17 );
18 WS1.GetDataTable(
19 function(result)
20 {
21 // 获取到下拉框控件
22 var List = document.getElementById("ddl1");
23
24 //AJAX November CTP 需要用 eval() 方法将其转换成一个DataTable对象(并且要裁掉最前面的"(")
25 var Text= result.dataArray.substring(0,result.dataArray.length -1);
26 var Table = eval( Text);
27
28 //AJAX December CTP 支持以下方法转换
29 // var Table = Sys.Preview.Data.DataTable.parseFromJson(result);
30
31 //清除下拉框原有列表项
32 for (x=List.options.length-1; x > -1; x--)
33 {
34 List.remove(0);
35 }
36
37 //从获取的DataTable添加数据到下拉框列表项
38 for (x=0; x < Table.length; x++ )
39 {
40 //获取每一行
41 var Row = Table[x];
42 //创建一个列表项
43 var option = document.createElement("option");
44 //列表项显示文本赋值
45 option.text = Row.Name + " " + Row.LastName;
46 //列表项选项值赋值
47 option.value = Row.Email;
48
49 //判断浏览器类型，进行项目添加
50 if ( window.navigator.appName.toLowerCase().indexOf("microsoft") > -1)
51 List.add(option);
52 else
53 List.add(option, null);
54 }
55 }
56 );
57 }
58
原:http://dotnet.chinaitlab.com/ASPNET/35454.html