Windows Server 2012 R2 安装NetFx3。镜像文件SXS文件夹。

//------------------------------------------------------------------------------
// 
//     Copyright （c） Microsoft Corporation.  All rights reserved.
// 
//------------------------------------------------------------------------------

namespace System.Web.Administration {
    using System;
    using System.Configuration;
    using System.Globalization;
    using System.Security;
    using System.Security.Permissions;
    [AspNetHostingPermission（SecurityAction.linkDemand Level=AspNetHostingPermissionLevel.Minimal）]
    [AspNetHostingPermission（SecurityAction.InheritanceDemand Level=AspNetHostingPermissionLevel.Minimal）]
    public class ApplicationConfigurationPage : WebAdminPage {
        protected override void OnInit（EventArgs e） {
            NavigationBar.SetSelectedIndex（2）;
            base.OnInit（e）;
        }
    }
}