7、OK!服务器端的WCF已经准备好了，下面就开始客户端的访问。
8、配置ASP.NET Ajax，在web.config中进行设置：
<?xml version="1.0"?>
<configuration>
<appSettings/>
<connectionStrings/>
<system.web>
<compilation debug="false">
<assemblies>
<add assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
</assemblies>
</compilation>
<authentication mode="Forms" />
<httpHandlers>
<add verb="*" path="*_AppService.axd" validate="false" type="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" validate="false"/>
</httpHandlers>
<httpModules>
<add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
</httpModules>
</system.web>
</configuration>
注意：要设置为3.5版本的System.Web.Extensions，如果使用asp.net ajax 1.0会得不到调用WCF服务返回的结果。
9、修改default.aspx的代码：
1)添加ScriptManager，将ServiceReference设置为：~/CNBlogsWCFService.svc。
2)将
<%@ Register Assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
Namespace="System.Web.UI" TagPrefix="asp" %>
改为:
<%@ Register Assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"
Namespace="System.Web.UI" TagPrefix="asp" %>
2)添加调用WCF服务的代码，完整代码如下：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<%@ Register Assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" Namespace="System.Web.UI" TagPrefix="asp" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Ajax WCF 演示 </title>
</head>
<body>
<form id="form1" runat="server">
<div align="center" style="margin-top:50px">
<asp:ScriptManager ID="ScriptManager1" runat="server">
<Services>
<asp:ServiceReference Path="~/CNBlogsWCFService.svc" />
</Services>
</asp:ScriptManager>
<a href="#" onclick="AddToFavorites('1','2')">收藏</a><br />
<br />
<span style="color:Red" id="Msg"></span>
<script type="text/javascript">
function AddToFavorites(blogID,postID)
{
var wcf = new www.cnblog.com.ICNBlogsWCFService();
wcf.AddToFavorites(blogID,postID,OnSucceeded);
}
function OnSucceeded(result)
{
document.getElementById("Msg").innerHTML = result;
}
</script>
</div>
</form>
</body>
</html>
10、一切就绪，体验一下Ajax调用WCF的快乐!
