(adsbygoogle = window.adsbygoogle || []).push({}); *System.Windows.Media.Animations
*Works for controls that have an opacity property
*Opacity values range from 0.00 - 1.00

0 = not visible
1 = visible

Some examples:

    

static double opacityValue = 0;



        public static void fadeIn(Image image, double duration)

        {

            image.Opacity = opacityValue;

            var fadeTime = new DoubleAnimation(opacityValue, 1, TimeSpan.FromSeconds(duration));

            image.BeginAnimation(System.Windows.UIElement.OpacityProperty, fadeTime);

        }

        public static void fadeIn(Label label, double duration)

        {

            label.Opacity = opacityValue;

            var fadeTime = new DoubleAnimation(opacityValue, 1, TimeSpan.FromSeconds(duration));

            label.BeginAnimation(System.Windows.UIElement.OpacityProperty, fadeTime);

        }

        public static void fadeOut(Image image, double duration)

        {

            image.Opacity = opacityValue;

            var fadeTime = new DoubleAnimation(1, 0, TimeSpan.FromSeconds(duration));

            image.BeginAnimation(System.Windows.UIElement.OpacityProperty, fadeTime);

        }

        public static void fadeOut(Label label, double duration)

        {

            label.Opacity = opacityValue;

            var fadeTime = new DoubleAnimation(1, 0, TimeSpan.FromSeconds(duration));

            label.BeginAnimation(System.Windows.UIElement.OpacityProperty, fadeTime);

        }

Interesting, nice share c:

Thanks Kaneki hehe :p