public void TaggerSelectChange(object tagger, bool selected)
        {
            Tagger TaggerObject = (Tagger)tagger;

            if (selected == true)
            {
                if (CurrentSelected != null)
                {
                    CurrentSelected.DeSelectTagger();
                }
                CurrentSelected = TaggerObject;
                CurrentSelected.Focus();
                CurrentSelected.PreviewKeyDown += new PreviewKeyDownEventHandler(CurrentSelected_PreviewKeyDown);
            }
            if (selected == false)
            {
                CurrentSelected = null;
            }
        }