介绍

我之前关于使用托管代码检测安装了哪些 .NET Framework 版本和服务包的文章生成了一些与检测 Internet 信息服务 (IIS) 是否已安装以及 ASP 或 ASP.NET 是否已注册相关的后续问题。

由于这是一个托管代码解决方案，它确实需要已经安装了 .NET Framework 的一个版本，因此不能保证此类作为安装过程的一部分工作。如果您需要在安装过程中可靠地执行此操作，则需要考虑使用非托管 C++ 执行相同的工作。

背景

确定是否安装了特定版本的 Internet 信息服务的正确方法是在注册表中查找以下项：

HKLM\Software\Microsoft\InetStp\MajorVersion
HKLM\Software\Microsoft\InetStp\VersionString

这是一个 DWORD 值，指示安装的 IIS 版本（如果存在）。

对于 IIS 5，您可以使用 MinorVersion DWORD 值来确定您是在 Windows 2000 Server 还是 Windows XP Professional 上运行。如果 MinorVersion 为 1，则您在 Windows XP Professional 上运行。

检测 IIS 子组件

有时，仅仅知道是否安装了 IIS 是不够的，您需要确定是否还安装了特定的子组件。同样，我们可以转向注册表以获取此信息。所有子组件信息都包含在以下注册表项中：

HKLM\Software\Microsoft\Windows\CurrentVersion\Setup\Oc Manager\Subcomponents

此键下的所有值都是 DWORD，因此如果值为 1，则安装该组件。

检测是否已注册 ASP 或 ASP.NET

为了检测 ASP 是否在 IIS 中注册，您可以简单地查看是否安装了 ASP 组件 (iis_asp)。但是，对于 ASP.NET，由于有不同版本的 ASP.NET，它变得有点复杂。我们还可以通过查看以下键来使用注册表获取此信息：

如果该键存在，则该版本的 ASP.NET 已向 IIS 注册。

使用代码

为了整合检查所有各种注册表项并帮助隔离 .NET Framework 和 IIS 的未来版本的更改，InternetInformationServicesDetection创建了该类。这个类公开了以下public方法：

• C＃

  public  static  bool IsInstalled(InternetInformationServicesVersion iisVersion)

• C＃

  public  static  bool IIsInstalled(InternetInformationServicesComponent subcomponent)

• C＃

  public  static  bool IsAspRegistered()

• C＃

  public  static  bool IsAspNetRegistered(FrameworkVersion frameworkVersion)

正如你所看到的，这些函数使用FrameworkVersion，InternetInformationServicesVersion和InternetInformationServicesComponent枚举。这些枚举具有以下定义：

/// <span class="code-SummaryComment"><summary></span>
/// Specifies the .NET Framework versions
/// <span class="code-SummaryComment"></summary></span>
public enum FrameworkVersion
{
/// <span class="code-SummaryComment"><summary></span>
 /// .NET Framework 1.0
 /// <span class="code-SummaryComment"></summary></span>
 Fx10,
/// <span class="code-SummaryComment"><summary></span>
 /// .NET Framework 1.1
 /// <span class="code-SummaryComment"></summary></span>
 Fx11,
/// <span class="code-SummaryComment"><summary></span>
 /// .NET Framework 2.0
 /// <span class="code-SummaryComment"></summary></span>
 Fx20,
/// <span class="code-SummaryComment"><summary></span>
 /// .NET Framework 3.0
 /// <span class="code-SummaryComment"></summary></span>
 Fx30,
/// <span class="code-SummaryComment"><summary></span>
 /// .NET Framework 3.5 (Orcas)
 /// <span class="code-SummaryComment"></summary></span>
 Fx35,
}
/// <span class="code-SummaryComment"><summary></span>
/// Specifies the Internet Information Services (IIS) versions
/// <span class="code-SummaryComment"></summary></span>
public enum InternetInformationServicesVersion
{
/// <span class="code-SummaryComment"><summary></span>
 /// Internet Information Services 4
 /// <span class="code-SummaryComment"></summary></span>
 /// <span class="code-SummaryComment"><remarks>Shipped in NT Option Pack for Windows NT 4</remarks></span>
 IIS4,
/// <span class="code-SummaryComment"><summary></span>
 /// Internet Information Services 5
 /// <span class="code-SummaryComment"></summary></span>
 /// <span class="code-SummaryComment"><remarks>Shipped in Windows 2000 Server and Windows XP Professional</remarks></span>
 IIS5,
/// <span class="code-SummaryComment"><summary></span>
 /// Internet Information Services 6
 /// <span class="code-SummaryComment"></summary></span>
 /// <span class="code-SummaryComment"><remarks>Shipped in Windows Server 2003</remarks></span>
 IIS6,
/// <span class="code-SummaryComment"><summary></span>
 /// Internet Information Services 7
 /// <span class="code-SummaryComment"></summary></span>
 /// <span class="code-SummaryComment"><remarks>Shipped in Windows Vista</remarks></span>
 IIS7,
}
/// <span class="code-SummaryComment"><summary></span>
/// Specifies the Internet Information Services (IIS) versions
/// <span class="code-SummaryComment"></summary></span>
public enum InternetInformationServicesComponent
{
/// <span class="code-SummaryComment"><summary></span>
 /// Internet Information Services Common Files
 /// <span class="code-SummaryComment"></summary></span>
 Common,
/// <span class="code-SummaryComment"><summary></span>
 /// Active Server Pages (ASP) for Internet Information Services
 /// <span class="code-SummaryComment"></summary></span>
 ASP,
/// <span class="code-SummaryComment"><summary></span>
 /// File Transfer Protocol (FTP) service
 /// <span class="code-SummaryComment"></summary></span>
 FTP,
/// <span class="code-SummaryComment"><summary></span>
 /// Internet Information Services Manager
 /// <span class="code-SummaryComment"></summary></span>
 InetMgr,
/// <span class="code-SummaryComment"><summary></span>
 /// Internet Data Connector
 /// <span class="code-SummaryComment"></summary></span>
 InternetDataConnector,
/// <span class="code-SummaryComment"><summary></span>
 /// Network News Transfer Protocol (NNTP) service
 /// <span class="code-SummaryComment"></summary></span>
 NNTP,
/// <span class="code-SummaryComment"><summary></span>
 /// Server-Side Includes
 /// <span class="code-SummaryComment"></summary></span>
 ServerSideIncludes,
/// <span class="code-SummaryComment"><summary></span>
 /// Simple Mail Transfer Protocol (SMTP) service
 /// <span class="code-SummaryComment"></summary></span>
 SMTP,
/// <span class="code-SummaryComment"><summary></span>
 /// Web Distributed Authoring and Versioning (WebDAV) publishing
 /// <span class="code-SummaryComment"></summary></span>
 WebDAV,
/// <span class="code-SummaryComment"><summary></span>
 /// World Wide Web (WWW) service
 /// <span class="code-SummaryComment"></summary></span>
 WWW,
/// <span class="code-SummaryComment"><summary></span>
 /// Remote administration (HTML)
 /// <span class="code-SummaryComment"></summary></span>
 RemoteAdmin,
/// <span class="code-SummaryComment"><summary></span>
 /// Internet Server Application Programming Interface (ISAPI) for
 /// Background Intelligent Transfer Service (BITS) server extensions
 /// <span class="code-SummaryComment"></summary></span>
 BitsISAPI,
/// <span class="code-SummaryComment"><summary></span>
 /// Background Intelligent Transfer Service (BITS) server extensions
 /// <span class="code-SummaryComment"></summary></span>
 Bits,
/// <span class="code-SummaryComment"><summary></span>
 /// FrontPage server extensions
 /// <span class="code-SummaryComment"></summary></span>
 FrontPageExtensions,
/// <span class="code-SummaryComment"><summary></span>
 /// Internet printing
 /// <span class="code-SummaryComment"></summary></span>
 InternetPrinting,
/// <span class="code-SummaryComment"><summary></span>
 /// ActiveX control and sample pages for hosting Terminal Services
 /// client connections over the web
 /// <span class="code-SummaryComment"></summary></span>
 TSWebClient,
}

C# 中的完整示例如下所示：

bool iis4Installed =
InternetInformationServicesDetection.IsInstalled
(InternetInformationServicesVersion.IIS4);
bool iis5Installed =
InternetInformationServicesDetection.IsInstalled
(InternetInformationServicesVersion.IIS5);
bool iis6Installed =
InternetInformationServicesDetection.IsInstalled
(InternetInformationServicesVersion.IIS6);
bool iis7Installed =
InternetInformationServicesDetection.IsInstalled
(InternetInformationServicesVersion.IIS7);
Console.WriteLine("IIS 4 installed? {0}", iis4Installed);
Console.WriteLine("IIS 5 installed? {0}", iis5Installed);
Console.WriteLine("IIS 6 installed? {0}", iis6Installed);
Console.WriteLine("IIS 7 installed? {0}", iis7Installed);
if (iis4Installed || iis5Installed || iis6Installed || iis7Installed)
{
Console.WriteLine("ASP Registered? {0}",
InternetInformationServicesDetection.IsAspRegistered());
Console.WriteLine("ASP.NET 1.0 Registered? {0}",
InternetInformationServicesDetection.IsAspNetRegistered(FrameworkVersion.Fx10));
Console.WriteLine("ASP.NET 1.1 Registered? {0}",
InternetInformationServicesDetection.IsAspNetRegistered(FrameworkVersion.Fx11));
Console.WriteLine("ASP.NET 2.0 Registered? {0}",
InternetInformationServicesDetection.IsAspNetRegistered(FrameworkVersion.Fx20));
// These really don't exist, they are actually the .NET 2.0 version of ASP.NET.
Console.WriteLine("ASP.NET 3.0 Registered? {0}",
InternetInformationServicesDetection.IsAspNetRegistered(FrameworkVersion.Fx30));
Console.WriteLine("ASP.NET 3.5 Registered? {0}",
InternetInformationServicesDetection.IsAspNetRegistered(FrameworkVersion.Fx35));
}