directoryservices

I have the following code: var directoryEntry = new DirectoryEntry(distributionListsListADSPath); var directorySearcher = new DirectorySearcher(directoryEntry) { SizeLimit = int.MaxValue, PageSize = int.MaxValue }; var result = directorySearcher.FindAll(); The problem is I want to search two seperate OUs. So what I do is run through this twice, once where private const string distributionListsListADSPath = "LDAP://OU=Distribution Lists,OU=Groups,DC=enron,DC=com"; and a second where it is private const string distributionListsListADSPath = "LDAP://OU=Security Groups,OU=Groups,DC=enron,DC=com";

I want to extend the GroupPrincipal class to handle some custom properties: using System.DirectoryServices.AccountManagement; [DirectoryRdnPrefix("CN")] [DirectoryObjectClass("group")] public class MyGroupPrincipal : GroupPrincipal { // ... } How could I override the Members property for MyGroupPrincipal so that if it has a member that is a group an instance of MyGroupPrincipal and not of GroupPrincipal is returned? I would like to write e.g. MyGroupPrincipal group = GetGroup(); foreach (var m in group.Members) { if (m is MyGroupPrincipal) { // always fails: m is a normal GroupPrincipal // do