Storyboard.TargetName Attached Property
Gets or sets the name of the object to animate.
Assembly: System.Windows (in System.Windows.dll)
Dependency property identifier field: TargetNameProperty
Attempting to set on a running animation will cause a run-time error. However, you can retarget an existing animation is stopped or not yet running. If you do so, be careful not to retarget an animation to the wrong type of target (one that does not possess the existing Storyboard.TargetProperty). Otherwise, you will get a run-time error.
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.