private void EchoEffectToggle_Toggled(object sender, RoutedEventArgs e) { // Enable/Disable the effect in the graph // Also enable/disable the associated UI for effect parameters if (echoEffectToggle.IsOn) { echoSlider.IsEnabled = true; echoLabel.Foreground = new SolidColorBrush(Colors.White); fileInputNode.EnableEffectsByDefinition(echoEffectDefinition); } else { echoSlider.IsEnabled = false; echoLabel.Foreground = new SolidColorBrush(Color.FromArgb(255, 74, 74, 74)); fileInputNode.DisableEffectsByDefinition(echoEffectDefinition); } }