Storyboard.Begin Method (FrameworkElement, FrameworkTemplate)
Applies the animations associated with this Storyboard to their targets within the specified template and initiates them.
Assembly: PresentationFramework (in PresentationFramework.dll)
public void Begin( FrameworkElement containingObject, FrameworkTemplate frameworkTemplate )
If the targeted properties are already animated, they are replaced using the SnapshotAndReplace handoff behavior.
When this method is called, Clock objects are created for the storyboard and any timelines it contains. These clocks are stored with containingObject.