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介紹

我之前關于使用托管代碼檢測安裝了哪些 .NET Framework 版本和服務包的文章生成了一些與檢測 Internet 信息服務 (IIS) 是否已安裝以及 ASP 或 ASP.NET 是否已注冊相關的后續問題。

由于這是一個托管代碼解決方案，它確實需要已經安裝了 .NET Framework 的一個版本，因此不能保證此類作為安裝過程的一部分工作。如果您需要在安裝過程中可靠地執行此操作，則需要考慮使用非托管 C++ 執行相同的工作。

背景

確定是否安裝了特定版本的 Internet 信息服務的正確方法是在注冊表中查找以下項：

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

這是一個 DWORD 值，指示安裝的 IIS 版本（如果存在）。

對于 IIS 5，您可以使用 MinorVersion DWORD 值來確定您是在 Windows 2000 Server 還是 Windows XP Professional 上運行。如果 MinorVersion 為 1，則您在 Windows XP Professional 上運行。

檢測 IIS 子組件

有時，僅僅知道是否安裝了 IIS 是不夠的，您需要確定是否還安裝了特定的子組件。同樣，我們可以轉向注冊表以獲取此信息。所有子組件信息都包含在以下注冊表項中：

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

此鍵下的所有值都是 DWORD，因此如果值為 1，則安裝該組件。

檢測是否已注冊 ASP 或 ASP.NET

為了檢測 ASP 是否在 IIS 中注冊，您可以簡單地查看是否安裝了 ASP 組件 (iis_asp)。但是，對于 ASP.NET，由于有不同版本的 ASP.NET，它變得有點復雜。我們還可以通過查看以下鍵來使用注冊表獲取此信息：

如果該鍵存在，則該版本的 ASP.NET 已向 IIS 注冊。

使用代碼

為了整合檢查所有各種注冊表項并幫助隔離 .NET Framework 和 IIS 的未來版本的更改，InternetInformationServicesDetection創建了該類。這個類公開了以下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，這些函數使用FrameworkVersion，InternetInformationServicesVersion和InternetInformationServicesComponent枚舉。這些枚舉具有以下定義：

/// <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));
}