private void ShowNextCommandExecute() { FractalCollection.MoveCurrentToNext(); RenderFractal(); RaiseCanExecuteChanged(); }
private bool ShowNextCommandCanExecute() { return(FractalCollection.CurrentPosition < FractalCollection.OfType <Fractal>().Count() - 1); }
private void ShowPrevCommandExecute() { FractalCollection.MoveCurrentToPrevious(); RenderFractal(); RaiseCanExecuteChanged(); }