How can I look up IIS site id in C#?

Question

I am writing an installer class for my web service. In many cases when I use WMI (e.g. when creating virtual directories) I have to know the siteId to provide the correct metabasePath to the site, e.g.:

metabasePath is of the form "IIS://<servername>/<service>/<siteID>/Root[/<vdir>]"
for example "IIS://localhost/W3SVC/1/Root"

How can I look it up programmatically in C#, based on the name of the site (e.g. for "Default Web Site")?

Answer 1

Maybe not the best way, but here we do it the following way :

1. loop through all the sites under "IIS://servername/service"
2. for each of the sites check if the name is "Default Web Site" in your case
3. if true then you have your site id

In Visual Basic 6 (sorry, all the code I have at hand just now) this would be it :

Dim oSite As IADsContainer
Dim oService As IADsContainer
Set oService = GetObject("IIS://localhost/W3SVC")
For Each oSite In oService
    If IsNumeric(oSite.Name) Then
        If oSite.ServerComment = "Default Web Site" Then
            Debug.Print "Your id = " & oSite.Name
        End If
    End If
Next

Answer 2

Here is how to get it by name. You can modify as needed.

 public int GetWebSiteId(string serverName, string websiteName)
        {
            int result = -1;

            DirectoryEntry w3svc = new DirectoryEntry(string.Format("IIS://{0}/w3svc", serverName));

            foreach (DirectoryEntry site in w3svc.Children)
            {
                if (site.Properties["ServerComment"] != null)
                {
                    if (site.Properties["ServerComment"].Value != null)
                    {
                        if (string.Compare(site.Properties["ServerComment"].Value.ToString(), websiteName, 

                         false) == 0)
                        {
                            result = site.Name;
                            break;
                        }
                    }
                }
            }

            return result;
        }

Answer 3

You can search for a site by inspecting the ServerComment property belonging to children of the metabase path IIS://Localhost/W3SVC that have a SchemaClassName of IIsWebServer.

The following code demonstrates two approaches:

string siteToFind = "Default Web Site";

// The Linq way
using (DirectoryEntry w3svc1 = new DirectoryEntry("IIS://Localhost/W3SVC"))
{
    IEnumerable<DirectoryEntry> children = 
          w3svc1.Children.Cast<DirectoryEntry>();

    var sites = 
        (from de in children
         where
          de.SchemaClassName == "IIsWebServer" &&
          de.Properties["ServerComment"].Value.ToString() == siteToFind
         select de).ToList();
    if(sites.Count() > 0)
    {
        // Found matches...assuming ServerComment is unique:
        Console.WriteLine(sites[0].Name);
    }
}

// The old way
using (DirectoryEntry w3svc2 = new DirectoryEntry("IIS://Localhost/W3SVC"))
{

    foreach (DirectoryEntry de in w3svc2.Children)
    {
     if (de.SchemaClassName == "IIsWebServer" && 
         de.Properties["ServerComment"].Value.ToString() == siteToFind)
     {
      // Found match
      Console.WriteLine(de.Name);
     }
    }
}

This assumes that the ServerComment property has been used (IIS MMC forces its used) and is unique.

Kev

Answer 4

private static string FindWebSiteByName(string serverName, string webSiteName)
{
 DirectoryEntry w3svc = new DirectoryEntry("IIS://" + serverName + "/W3SVC");
 foreach (DirectoryEntry site in w3svc.Children)
 {
  if (site.SchemaClassName == "IIsWebServer"
   && site.Properties["ServerComment"] != null
   && site.Properties["ServerComment"].Value != null
   && string.Equals(webSiteName, site.Properties["ServerComment"].Value.ToString(), StringComparison.OrdinalIgnoreCase))
  {
   return site.Path;
  }
 }

 return null;
}

Answer 5

public static ManagementObject GetWebServerSettingsByServerComment(string serverComment)
        {
            ManagementObject returnValue = null;

            ManagementScope iisScope = new ManagementScope(@"\\localhost\root\MicrosoftIISv2", new ConnectionOptions());
            iisScope.Connect();
            if (iisScope.IsConnected)
            {
                ObjectQuery settingQuery = new ObjectQuery(String.Format(
                    "Select * from IIsWebServerSetting where ServerComment = '{0}'", serverComment));

                ManagementObjectSearcher searcher = new ManagementObjectSearcher(iisScope, settingQuery);
                ManagementObjectCollection results = searcher.Get();

                if (results.Count > 0)
                {
                    foreach (ManagementObject manObj in results)
                    {
                        returnValue = manObj;

                        if (returnValue != null)
                        {
                            break;
                        }
                    }
                }
            }

            return returnValue;
        }

Answer 6

Do you guys know how IIS 6.0 actually generates this ID number for each site? My server admin person is worried that if I set up a site using a random ID number, that IIS might in the future try to use that same number to generate a different site.

Thanks