Getting Group Memberships With DirectoryServices

Question

User2106497420 posted

I'm still fairly new to .NET, and am hoping someone can shed some light on a weird issue I'm having. I'm trying to write a method that can accept the name of an Active Directory computer, user, or group, and spit back the nested/recursive list of group memberships that object belongs to.

Right now I've got it giving me 121 entries, when it should be giving me 135. I can't figure out why I'm not getting everything.

Can someone tell me if there's something wrong with my code?

Thanks!

        public List<string> EnumerateAllGroupMemberships(string objectName)
        {
            List<string> groupsList = new List<string>();
            using (DirectoryEntry directoryEntry = CreateDirectoryEntry(myDomainRoot))
            {
                using (DirectorySearcher directorySearcher = new DirectorySearcher())
                {
                    directorySearcher.SearchRoot = directoryEntry;
                    directorySearcher.PropertiesToLoad.Add("memberOf");
                    GetGroupMembershipsRecursively(directorySearcher, objectName, groupsList);
                }
            }
            groupsList.Sort();
            return groupsList;
        }

        private void GetGroupMembershipsRecursively(DirectorySearcher directorySearcher, string objectName, List<string> groupsList)
        {
            directorySearcher.Filter = "(name=" + objectName + ")";
            SearchResult result = directorySearcher.FindOne();
            if (result != null)
            {
                var memberOfCollection = result.Properties["memberOf"];
                foreach (var entry in memberOfCollection)
                {
                    string groupDN = entry.ToString();
                    if (!groupsList.Contains(groupDN)) //Skip groups that have already been found
                    {
                        groupsList.Add(groupDN);
                        string groupName = GetNameFromDN(groupDN);
                        GetGroupMembershipsRecursively(directorySearcher, groupName, groupsList);
                    }
                }
            }
        }