public void RemoveLastEntry()
        {
            Count--;
            ReferenceName.RemoveAt(Count);
            ReferencePosition.RemoveAt(Count);
            ChrIndexer.Remove(NumIndexer[Count]);
            NumIndexer.Remove(Count);
            Ad.RemoveAt(Count);
            Dp.RemoveAt(Count);

            if (Categories != null)
            {
                Categories.RemoveAt(Count);
                QScores.RemoveAt(Count);
                Gp.RemoveAt(Count);
            }
        }