public void BeginAnimation(DependencyProperty dp, AnimationTimeline animation, HandoffBehavior handoffBehavior)
{
if (dp == null)
{
throw new ArgumentNullException("dp");
}
if (animation != null && !animation.IsValidTarget(dp))
{
throw new ArgumentException("AnimationTimeline type mismatch: " + animation.GetType() +
" on property " + dp.OwnerType.GetType() + "." + dp.Name + " of type " + dp.PropertyType);
}
if (base.IsFrozen)
{
throw new InvalidOperationException("Resource is frozen and cannot be animated");
}
if (animation == null)
{
base.ClearAnimation(dp);
}
else
{
Storyboard storyboard = new Storyboard();
storyboard.Children.Add(animation);
storyboard.Begin(FrameworkElement.FindTreeElement(this), handoffBehavior);
}
}
