using DigitalData.Core.ConsoleApp;
using System.DirectoryServices;
using System.DirectoryServices.ActiveDirectory;


string AdRootPath = "LDAP://DD-GAN";
string groupFilter = "(&(objectClass=group) (samAccountName=*))";
string userFilter = "(&(objectClass=user)(samAccountName=@SAMACCOUNTNAME)(!(UserAccountControl:1.2.840.113556.1.4.803:=2)))";
DirectoryService service = new ();

var groups = DirectoryService.Search<ADGroup>(groupFilter);

foreach (var g in groups)
{
    Console.WriteLine(g.Name);
}