protected override void Dispose(bool disposing)
            {
                if (_disposed)
                {
                    return;
                }

                _disposed = true;

                if (disposing)
                {
                    _renderer = null;
                }

                base.Dispose(disposing);
            }
 public PickerSource(PickerRendererBase <TControl> renderer)
 {
     _renderer = renderer;
 }