Fade animation in C# / WPF

fade_animation.cs

DoubleAnimation animation = new DoubleAnimation();
animation.To = 0;
//animation.From = 1;
animation.Duration = TimeSpan.FromMilliseconds(ANIMATION_SPEED);
animation.EasingFunction = new QuadraticEase();

Storyboard sb = new Storyboard();
sb.Children.Add(animation);

c.Opacity = 1;
c.Visibility = Visibility.Visible;

Storyboard.SetTarget(sb, c);
Storyboard.SetTargetProperty(sb, new PropertyPath(Control.OpacityProperty));

sb.Begin();

sb.Completed += delegate(object sender, EventArgs e)
{
	c.Visibility = Visibility.Collapsed;
};

Thanks for this! Please note that the Completed delegate must be defined before calling Begin()

https://stackoverflow.com/a/14183515/2399918