using System;
using System.DirectoryServices;
using System.Runtime.InteropServices;
using System.Reflection;
using activedsnet;
class Test
{
static string domainPath = "WinNT://myDomainName/"; // WinNT provider - domain name

private static void ListMembersInGroup(string GroupName)
{
    IADsMembers MembersCollection = null;
    try
    {
    // someValidUser and hisPwd are user credentials to bind to the DC
        DirectoryEntry groupEntry = new DirectoryEntry( domainPath + GroupName ,"someValidUser", "hisPwd",
AuthenticationTypes.Secure);
        PropertyCollection pcoll = groupEntry.Properties;
    // invoke native method "members"
        MembersCollection = groupEntry.Invoke("Members") as IADsMembers;
        object[] filter = {"user"};
        MembersCollection.Filter = filter;
    // enumerate members of collection object that supports the IADsMembers interface
    // ADSI provider doesn't support count property
        try
        {
            foreach (IADsUser member in MembersCollection)
        {
        Console.WriteLine("====================================================");
        Console.WriteLine("ADsPath "+ member.ADsPath + " Name: " + member.Name );
        ListUserProp(member.Name);
        }
      }
        catch (COMException e)
        {
            Console.WriteLine("Error: {0}",e.Message);
        }
    }
        catch (COMException e)
        {
            Console.WriteLine(e.Message);
        }
    }
/ Show user props
private static void ListUserProp(string UserName)
{
    DirectoryEntry userEntry = null;
    try
    {
        userEntry = new DirectoryEntry(domainPath + UserName,"Administrator", "kevin", AuthenticationTypes.Secure);
        PropertyCollection pcoll = userEntry.Properties;
        Console.WriteLine(pcoll.Count);
        foreach(string sc in pcoll.PropertyNames)
        Console.WriteLine(sc + "\t" + pcoll[sc].Value);
    }
    catch (COMException e)
    {
        Console.WriteLine(e.Message);
    }
        finally
    {
        userEntry.Close();
    }
}
    public static void Main()
    {
    // List all members in group "Domain Users"
        ListMembersInGroup("Domain Users");
    }
}