// Constructs the m_alChildren array.
        public void AddChildren( CGedcom gedcom )
        {
            m_alChildren = new ArrayList();

            foreach( CChildXref cxr in m_alXrefsChildren )
            {
                if( cxr != null && cxr.m_xref != "" )
                {
                    CIndividualRecord ir = gedcom.GetIndividualRecord( cxr.m_xref );
                    if( ir != null )
                    {
                        m_alChildren.Add( new CChild( cxr.m_nPositionInFile, ir ) );
                    }
                }
            }
            m_alChildren.Sort( new CChild.Comparer() );
        }