public static async Task SlideAndFadeUpFromBottomAsync(this FrameworkElement element, float duration, bool keepMargin = true, int height = 0) { var sb = new Storyboard(); sb.AddSlideBottomUp(duration, height == 0 ? element.ActualHeight : height, .9f, keepMargin); sb.AddFadeIn(duration); await DoAnimation(element, duration, sb); }