private static void OnFFTComplexityChanged(DependencyObject o, DependencyPropertyChangedEventArgs e) { SpectrumAnalyzer spectrumAnalyzer = o as SpectrumAnalyzer; if (spectrumAnalyzer != null) { spectrumAnalyzer.OnFFTComplexityChanged((FFTDataSize)e.OldValue, (FFTDataSize)e.NewValue); } }