public StaffHistory()
        {
            m_Pages      = new PageInfoCollection();
            m_QueueStats = new QueueStatusCollection();

            m_UserInfo  = new Hashtable(StringComparer.OrdinalIgnoreCase);
            m_StaffInfo = new Hashtable(StringComparer.OrdinalIgnoreCase);
        }
 /// <summary>
 /// Default constructor for enumerator.
 /// </summary>
 /// <param name="collection">Instance of the collection to enumerate.</param>
 internal QueueStatusCollectionEnumerator(QueueStatusCollection collection)
 {
     _index      = -1;
     _collection = collection;
 }