public BindingListenerService() { #if UWP property = DependencyProperty.RegisterAttached( "DependencyPropertyListener" + index++, typeof(object), typeof(BindingListenerService), new PropertyMetadata(null, (d, e) => { OnChanged(new BindingChangedEventArgs(e)); })); #else property = DependencyPropertyHelper.RegisterAttached( "DependencyPropertyListener" + index++, typeof(object), typeof(BindingListenerService), null, (d, e) => { OnChanged(new BindingChangedEventArgs(e)); }); #endif }