[This is preliminary documentation and is subject to change.]

KVO notification change dictionaries contain the old value under this key if KNKeyValueObservingOptionOld was specified when creating the observation.

Namespace:  KNKVC
Assembly:  KNKVC (in KNKVC.dll) Version: 1.0.0.0 (1.0.0.0)

Syntax

C#
public const string KNKeyValueChangeOldKey
Visual Basic (Declaration)
Public Const KNKeyValueChangeOldKey As String
Visual C++
public:
literal String^ KNKeyValueChangeOldKey

See Also