Active Directory: How to get all related groups by user

Hi

I know this is not a Moss post and i know that in Moss we trust, but it is a nice code to have.

Recently i needed to get all related AD groups per user, so if a user A is in group B and group B is in group C, i will get a collection like so { B,C } for A.

To do so i used the following code:

/// ldapPath - Ldap://...

/// distinguishedName - The user location (CN=AAA, OU=BBB,OU=CCC,DC=DDD )

///resultField - The property field value (DisplyName, Mail)

public static void GetAllRelatedGroupsByEntry(string ldapPath, string distinguishedName,

ref List<string> groups, string resultField)

{

SearchResultCollection results = null;

using (DirectoryEntry entry = new DirectoryEntry(ldapPath))

{

using (DirectorySearcher search = new DirectorySearcher(entry))

{

search.Filter = "(&(objectClass=Group)(objectCategory=Group)(member=" + distinguishedName + "))";

results = search.FindAll();

if (results != null)

{

foreach (SearchResult result in results)

{

for (int i = 0; i <>

{

groups.Add(result.Properties[resultField][i].ToString());

GetAllRelatedGroupsByEntry(ldapPath,

result.Properties["DistinguishedName"][i].ToString(),

ref groups, resultField);

}

}

}

}

}

}