RectKeyFrameCollection.FreezeCore Method (Boolean)
Makes this instance of RectKeyFrameCollection unmodifiable or determines whether it can be made unmodifiable.
Assembly: PresentationCore (in PresentationCore.dll)
true to check if this instance can be frozen; false to freeze this instance.
Return ValueType: System.Boolean
If isChecking is true, this method returns true if this instance can be made read-only, or false if it cannot be made read-only. If isChecking is false, this method returns true if this instance is now read-only, or false if it cannot be made read-only, with the side effect of having begun to change the frozen status of this object.
Available since 3.0