Gets a value that declares whether the property is being animated.
Assembly: PresentationFramework (in PresentationFramework.dll)
For any property that is currently being animated, the source reported by BaseValueSource is not immediately relevant, because the animation operates at higher dependency property precedence than the base value. For more information about precedence and animations, see Dependency Property Value Precedence.
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.