C#: Fade out animation

fadeout.cs

var myControl = ControlName;
var a = new DoubleAnimation
{
    From = 1.0,
    To = 0.0,
    FillBehavior = FillBehavior.Stop,
    BeginTime = TimeSpan.FromSeconds(2),
    Duration = new Duration(TimeSpan.FromSeconds(0.5))
};
var storyboard = new Storyboard();

storyboard.Children.Add(a);
Storyboard.SetTarget(a, myControl);
Storyboard.SetTargetProperty(a, new PropertyPath(OpacityProperty));
storyboard.Completed += delegate { myControl.Visibility = Visibility.Hidden; };
storyboard.Begin();