protected override void OnAttached() { // get the control var control = Control as WebKit.WKWebView; if (control != null) { System.Diagnostics.Debug.WriteLine("Connected Effect"); Effect thisEffect = Element.Effects.FirstOrDefault(e => e is Mobile.Effects.ScrollNotifierEffect); effect = (WeeklyXamarin.Mobile.Effects.ScrollNotifierEffect)thisEffect; control.ScrollView.Scrolled += ScrollView_Scrolled; } }