Assembly: PresentationCore (in presentationcore.dll)
Valore restituitoAn object, if implementation of a derived class has an alternate parent connection to report.
The default virtual implementation of this method returns riferimento null (Nothing in Visual Basic). FrameworkContentElement provides a practical implementation.
Alternative parents are used for event routing, in cases where an element creates an alternative parent structure so that its events are routed in a way that diverges from the standard pattern of routing up the visual tree to the standard parent, or downward in the preview routing strategy.