C#

string userName = "WinNT://computername/test12";
     userName = userName.Substring(userName.Length - 6);
     DirectoryEntry de = new DirectoryEntry("WinNT://" + Environment.MachineName + ",computer");
     DirectoryEntries children = de.Children;
     DirectoryEntry badObject = children.Find("userName");
     children.Remove(badObject);
     de.CommitChanges();

private void CommandReceived(object sender, CommandEventArgs e)
        {
            
            switch (e.Command.CommandType)
            {
                case CommandsType.NewUser:
                    {
                        int ret = CreateNewUser(e.Command.SenderUsername, e.Command.MetaData);
                        Command cmd = new Command(CommandsType.NewUser, "server", e.Command.SenderUsername, ret.ToString());
                        SendCommandToTarget(cmd);
                        UpdateConsole("new client registration ", "", IPAddress.None, 0);

                        break;
                    }
            }
      }

private int CreateNewUser(string u, string pne)
        {
            try
            {
                RMData db = new RMData();
                string username = u;
                string password = pne.Split(new char[] { ':' })[0];
                string email = pne.Split(new char[] { ':' })[1];
                Users user = db.Users.SingleOrDefault(usr => usr.Username == username);
                if (user != null)
                    return 1;
                user = db.Users.SingleOrDefault(usr => usr.Email == email);
                if (user != null)
                    return 2;
                user = new Users();
                user.Username = username;
                user.AddedDate = DateTime.Now;
                user.Email = email;
                user.Password = password;
                db.Users.InsertOnSubmit(user);
                
                return 0;
            }
            catch (Exception ex)
            {
                return 3;
            }
        }