CSharp abruf der Domänengruppen und User

            PrincipalContext ctx = new PrincipalContext(ContextType.Domain, domainName);
            GroupPrincipal grp = GroupPrincipal.FindByIdentity(ctx, IdentityType.SamAccountName, groupName);

            if (grp != null)
            {
                foreach (Principal p in grp.GetMembers(false))
                {
                    Console.WriteLine(p.SamAccountName + " - " + p.DisplayName);  
                }


                grp.Dispose();
                ctx.Dispose();
                Console.ReadLine();
            }
            else
            {
                Console.WriteLine("\nWe did not find that group in that domain, perhaps the group resides in a different domain?");  
                Console.ReadLine();
            }