User ID to user name or Worker Name in AX 2012 / D365

Hi,

Worker = HcmWorker::find(DirPersonUser::findUserWorkerReference(UserId));

or

    public static Name userName(UserId _userId)
{
    DirPartyName        partyName;

    partyName = DirPersonUser::userId2Name(this.UserId); //_UserId
    if (!partyName)
        partyName = (select firstonly Name from userInfo where userInfo.Id == this.UserId).Name;
    if (!partyName)
        partyName = this.UserId;
    return partyName;
}

public static UserID Worker2UserId(HcmWorkerRecId _WorkerRecId)

{

    DirPersonUser   personUser;

    HcmWorker       worker;

     select User from personUser

         exists join worker

            where worker.Person == personUser.PersonParty

                    && worker.RecId == _WorkerRecId;

   

    return personUser.User;

}

Regards