How to detect IIS version using C#?

Question

Update: I meant from a winapp (actually the scenario is developing a custom installer that wants to check the version of the installed IIS to call the appropriate api's)

Server-side or client side (e.g. calling an IIS web from a winforms app) ? I guess you mean server-side. — splattne, Jan 15 '09 at 11:58
I meant from a winapp (actually the scenario is developing a custom installer that wants to check the version of the installed IIS to call the appropriate api's) should wrote it in the main question..(sorry).. — Amr Elsehemy, Jan 15 '09 at 12:11

score 37 · Answer 1 · edited Apr 10 '14 at 13:53

Found the answer here: link text The fileVersion method dosesn't work on Windows 2008, the inetserv exe is somewhere else I guess.

public Version GetIisVersion()
{
    using (RegistryKey componentsKey = Registry.LocalMachine.OpenSubKey(@"Software\Microsoft\InetStp", false))
    {
        if (componentsKey != null)
        {
            int majorVersion = (int)componentsKey.GetValue("MajorVersion", -1);
            int minorVersion = (int)componentsKey.GetValue("MinorVersion", -1);

            if (majorVersion != -1 && minorVersion != -1)
            {
                return new Version(majorVersion, minorVersion);
            }
        }

        return new Version(0, 0);
    }
}

I tested it, it works perfectly on Windows XP, 7 and 2008

Works with Windows 2003 Server as well! – Sudhanshu Mishra Jul 27 '15 at 02:12 — Sudhanshu Mishra, Jul 27 '15 at 02:12

Igal Tabachnik · Accepted Answer · 2009-01-15T12:20:29.810

You can get this information from the SERVER_SOFTWARE variable. It will return the following:

Microsoft-IIS/5.0 (Windows 2000)
Microsoft-IIS/5.1 (Windows XP)
Microsoft-IIS/6.0 (Windows 2003 Server)

etc.

If you're using ASP.NET, you can get this string via

Request.ServerVariables["SERVER_SOFTWARE"];

EDIT: It seems that you will have to query the registry to get this information. Take a look at this page to see how.

score 11 · Answer 3 · answered Jan 15 '09 at 12:26

11

This is how i do it.

FileVersionInfo verinfo = FileVersionInfo.GetVersionInfo(System.Environment.SystemDirectory + @"\inetsrv\inetinfo.exe");

//Tip... look at verinfo.MajorVersion.

answered Jan 15 '09 at 12:26

Jesper Palm

7,170
31
36

1

This is throwing a FileNotFoundException on Windows2008R2 (even when the file is there). Looks like a file permission issue. – Ignacio Soler Garcia Jun 18 '12 at 13:19
The file is not found by a 32 bits process on a 64 bits server because inetsrc\inetinfo.exe does not exist in the SysWOW64 directory. The registry method of jlafay works in all cases because the registry value is present in both the 32 bits and 64 bits sections of HKLM. – Berend Engelbrecht Jul 15 '14 at 15:05

score 7 · Answer 4 · answered Jan 15 '09 at 11:20

7

U can find it in the registry.

Up to IIS version 6 you can find it here:

HKLM\SYSTEM\CurrentControlSet\Services\W3SVC\Parameters

Since version 7 here:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\InetStp

MajorVersion MinorVersion

answered Jan 15 '09 at 11:20

Xn0vv3r

17,766
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IIS 7 also has an entry in HKLM\SYSTEM\CurrentControlSet\Services\W3SVC\Parameters, at least on Windows7 32 bit. (Major version 7, minor version 5). But this key appears not to be availalbe on Windows Server 2008 (IIS7) anymore. – Stefan Steiger Sep 07 '10 at 07:53

score 4 · Answer 5 · edited Aug 04 '14 at 15:47

4

In .NET 4.5

HttpRuntime.IISVersion

edited Aug 04 '14 at 15:47

Robert

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answered Aug 04 '14 at 15:28

h0ckey09

89
7

Self-explanatory... How to detect IIS version using C#? Use httpRuntime.IISVersion. – h0ckey09 Aug 04 '14 at 20:16
As I understand the question, the OP is looking for IIS version when running the installer. HttpRuntime.IISVersion will return `null` if the application running is not hosted by IIS, so this answer doesn't appear to help the OP. – Beofett Mar 28 '16 at 20:50

score 4 · Answer 6 · answered Jan 15 '09 at 11:27

4

Use System.Web.HttpRequest.ServerVariables("SERVER_SOFTWARE"). The return value is a string in the format name/version.

answered Jan 15 '09 at 11:27

gkrogers

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score 3 · Answer 7 · answered Apr 08 '13 at 08:32

You can use below code

public static bool IisInstalled()
        {
            try
            {
                using (RegistryKey iisKey = Registry.LocalMachine.OpenSubKey(@"Software\Microsoft\InetStp"))
                {
                    return (int)iisKey.GetValue("MajorVersion") >= 6;
                }
            }
            catch
            {
                return false;
            }
        }

fore more information visit : http://www.java2s.com/Code/CSharp/Windows/IIShelperisIISInstalledIISstateIISversion.htm

score 3 · Answer 8 · answered Jan 15 '09 at 11:23

3

It is usually presented in http header of response, as i know.

answered Jan 15 '09 at 11:23

0x49D1

8,505
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score 2 · Answer 9 · answered Dec 22 '11 at 02:59

For installer with custom actions: In your custom action view, you can pass data to your customer installer class via the "CustomActionData" attribute in the properties for the custom action as follows: /iisv="[IISVERSION]"

Check:

http://johnbarshinger.wordpress.com/2006/10/27/how-to-modify-the-vs2005-installer-to-set-the-asp-net-version-and-create-application-pools/

score 0 · Answer 10 · edited May 23 '17 at 12:33

0

I would just check the version of the OS: xp has IIS 5.1, Server 2003 has IIS 6 and vista/Server 2008 has IIS 7.

Here's how to check the version of the OS.

edited May 23 '17 at 12:33

Community

1
1

answered Aug 18 '09 at 08:30

Lodewijk

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score -2 · Answer 11 · answered Jan 15 '09 at 11:22

-2

Check the X-Powered-By header: http://www.http-stats.com/X-Powered-By

There you can find the possibly values...

answered Jan 15 '09 at 11:22

Ironicnet

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How to detect IIS version using C#?

11 Answers11

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