private void SynchronizeRotation(RotateImageEvent ri) { if (ri.SynchronizedPresenters.Contains(ViewModelID)) { return; } Rotate rotate = new Rotate(); Dictionary <String, Object> parameters = new Dictionary <String, Object>(); parameters.Add("DisplayedImage", DisplayedImage); parameters.Add("PresenterID", ViewModelID); parameters.Add("SynchronizedPresenters", ri.SynchronizedPresenters); rotate.AffectImage(parameters); }