AJAX应用场景
更丰富的UI
页面分部分刷新
对性能的影响
对异常处理的影响

IIS 7兼容模式
扩展IIS 7架构
添加xml配置文件到
%SystemDir%\instsrv\config\schema
使用Microsoft.Web.Administration读取

<configSchema>
    <sectionSchema name="system.webServer/imageCopyright">
        <attribute name="enabled" type="bool" defaultValue="false" />
        <attribute name="message" type="string" defaultValue="Copyright Message" />
        <attribute name="color" type="string" defaultValue="Red" />
        <attribute name="cacheDuration" type="int" defaultValue="20" />
    </sectionSchema>
</configSchema>

IIS 7编程
Microsoft.Web.Administration

ServerManager iisManager = new ServerManager();

foreach(WorkerProcess w3wp in iisManager.WorkerProcesses)
{
    Console.WriteLine("W3Wp {0}", w3wp.ProcessId);

    foreach(Request request in w3wp.GetRequests(0))
    {
        Console.WriteLine("{0}-{1},{2},{3}", request.Url, request.ClientIPAddr, request.TimeElapsed, request.TimeInState);
    }
}