BitmapSource.FreezeCore Method (Boolean)
Makes an instance of BitmapSource or a derived class immutable.
Assembly: PresentationCore (in PresentationCore.dll)
true if this instance should actually freeze itself when this method is called; otherwise, false.
Return ValueType: System.Boolean
If isChecking is true, this method returns true if this Animatable can be made unmodifiable, or false if it cannot be made unmodifiable.
If isChecking is false, this method returns true if the if this Animatable is now unmodifiable, or false if it cannot be made unmodifiable, with the side effect of having begun to change the frozen status of this object.
Available since 3.0