public List<Drawing> ShowViewToSelectManyDialog()
 {
     var slctForm = new DrawingsSelectionForm(this);
     _slctedDraws = new List<Drawing>();
     slctForm.OnSelectDrawingsByCloseForm += SlctForm_OnSelectDrawings;
     slctForm.ShowDialog();
     return _slctedDraws;
 }
 public void ShowViewToSelectDialog(OnSelectEventHandler<Drawing> handler)
 {
     var slctForm = new DrawingsSelectionForm(this);
     _slctedDraws = new List<Drawing>();
     slctForm.OnSelectDrawings += drawings => { handler?.Invoke(drawings.Select(Mapper.Map<Drawing>).ToList()); };
     slctForm.OnSelectDrawingsByCloseForm += drawings => { handler?.Invoke(drawings.Select(Mapper.Map<Drawing>).ToList()); };
     slctForm.ShowDialog();
 }
 public Drawing ShowViewToSelectOneDialog()
 {
     var slctForm = new DrawingsSelectionForm(this);
     slctForm.ShowDialog();
     return null;
 }