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
<system.web.extensions>
??? <scripting>
????? <webServices>
??????? <jsonSerialization>
????????? <converters>
??????????? <add name="DataSetConverter" type="Microsoft.Web.Preview.Script.Serialization.Converters.DataSetConverter,Microsoft.Web.Preview"/>
??????????? <add name="DataRowConverter" type="Microsoft.Web.Preview.Script.Serialization.Converters.DataRowConverter,Microsoft.Web.Preview"/>
??????????? <add name="DataTableConverter" type="Microsoft.Web.Preview.Script.Serialization.Converters.DataTableConverter,Microsoft.Web.Preview"/>
????????? </converters>
??????? </jsonSerialization>
????? </webServices>
??? </scripting>
</system.web.extensions>
WEB服务1：WS1
using System;
using System.Web;
using System.Collections;
using System.Web.Services;
using System.Web.Services.Protocols;
using Microsoft.Web.Script.Services;
using System.Data;
/**//// <summary>
/// WS1 的摘要说明
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[ScriptService]
public class WS1 : System.Web.Services.WebService {
??? public WS1 () {
??????? //如果使用设计的组件，请取消注释以下行
??????? //InitializeComponent();
??? }
??? [WebMethod]
??? public string ServerTime()
??? {
??????? return String.Format("now： {0}",DateTime.Now);
??? }
??? [WebMethod]
??? public DataTable GetDataTable()
??? {
??????? DataTable dt = new DataTable("Person");
??????? dt.Columns.Add(new DataColumn("Name",typeof(string)));
??????? dt.Columns.Add(new DataColumn("LastName",typeof(string)));
??????? dt.Columns.Add(new DataColumn("Email",typeof(string)));
??????? dt.Rows.Add("kui","he","hekui168@163.com");
??????? dt.Rows.Add("ren","chao","chaoren888@163.com");
??????? return dt;
??? }
}
WEB服务2：WS
using System;
using System.Web;
using System.Collections;
using System.Web.Services;
using System.Web.Services.Protocols;
using Microsoft.Web.Script.Services;
/**//// <summary>
/// WS 的摘要说明
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[ScriptService]
public class WS : System.Web.Services.WebService {
??? public WS () {
??????? //如果使用设计的组件，请取消注释以下行
??????? //InitializeComponent();
??? }
??? [WebMethod]
??? [ScriptMethod(UseHttpGet = true)]
??? public string HelloWorld(String query)
??? {
??????? string inputString = Server.HtmlEncode(query);
??????? if (!String.IsNullOrEmpty(inputString))
??????? {
??????????? return String.Format("hello,{0}. ",inputString);
??????? }
??????? else
??????? {
??????????? return "query string is null or empty";
??????? }
??? }
}
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
??????? <asp:ScriptManager ID="ScriptManager1" runat="server">
??????????? <Services>
??????????????? <asp:ServiceReference Path="~/WS.asmx" />
??????????????? <asp:ServiceReference Path="~/WS1.asmx" />
??????????? </Services>
??????? </asp:ScriptManager>
Default页面：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
??? <title>Untitled Page</title>
??? <script language="javascript" type="text/javascript" src="js.js">
??? </script>
</head>
<body>
??? <form id="form1" runat="server">
??????? <asp:ScriptManager ID="ScriptManager1" runat="server">
??????????? <Services>
??????????????? <asp:ServiceReference Path="~/WS.asmx" />
??????????????? <asp:ServiceReference Path="~/WS1.asmx" />
??????????? </Services>
??????? </asp:ScriptManager>
??????? <div>
??????????? <asp:Button ID="Button1" runat="server" Text="Button" OnClientClick="dd();return false;" />
??????????? <div id="time">
??????????? </div>
??????????? <div id="List1">
??????????????? <asp:DropDownList ID="ddl1" runat="server" Width="187px">
??????????????? </asp:DropDownList>
??????????????? </div>
???????????
??????? </div>
??? </form>
</body>
</html>
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)”
??? function dd()
??? {
??????? WS.HelloWorld(??
???????????????????????? 'hekui',
???????????????????????? function(result)
???????????????????????? {
??????????????????????????? alert(result);
???????????????????????? }
???????????????????? );
??????? WS1.ServerTime(
???????????????????????? function(result)
???????????????????????? {
??????????????????????????? alert(result);
??????????????????????????? var divTime = document.getElementById("time");
??????????????????????????? divTime.innerHTML = result;
???????????????????????? }
???????????????????? );
?????? WS1.GetDataTable(
???????????????????????? function(result)
???????????????????????? {
??????????????????????????? // 获取到下拉框控件
??????????????????????????? var List = document.getElementById("ddl1");
??????????????????????????????????????????????????????
??????????????????????????? //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"(")
??????????????????????????? var Text= result.dataArray.substring(0,result.dataArray.length -1);???????????
??????????????????????????? var Table = eval( Text);
???????????????????????????
??????????????????????????? //AJAX December CTP 支持以下方法转换
//??????????????????????????? var Table = Sys.Preview.Data.DataTable.parseFromJson(result);
???????????????????????????
??????????????????????????? //清除下拉框原有列表项
??????????????????????????? for (x=List.options.length-1; x > -1; x--)
??????????????????????????? {
??????????????????????????????? List.remove(0);
??????????????????????????? }
???????????????????????????
??????????????????????????? //从获取的DataTable添加数据到下拉框列表项
??????????????????????????? for (x=0; x < Table.length; x++ )
??????????????????????????? {
??????????????????????????????? //获取每一行
??????????????????????????????? var Row = Table[x];?????????
??????????????????????????????? //创建一个列表项?????????????????
??????????????????????????????? var option = document.createElement("option");
??????????????????????????????? //列表项显示文本赋值
??????????????????????????????? option.text = Row.Name + " " + Row.LastName;??
??????????????????????????????? //列表项选项值赋值
??????????????????????????????? option.value = Row.Email;?????????????????????
??????????????????????????????? //判断浏览器类型，进行项目添加???? ??????????????????????????????? if ( window.navigator.appName.toLowerCase().indexOf("microsoft") > -1) ?????????????????????????????????? List.add(option); ??????????????????????????????? else?????????????????????????????????? List.add(option,null);????????? ??????????????????????????? }???????????????????????? }?????????????????????? );??? }
