MatrixKeyFrameCollection.FreezeCore Method (Boolean)
Makes this instance of MatrixKeyFrameCollection unmodifiable or determines whether it can be made unmodifiable.
Assembly: PresentationCore (in PresentationCore.dll)
true if this method should simply determine whether this instance can be frozen. false if this instance should actually freeze itself when this method is called.
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