Hook invoked before changing a value for a key in the DictionaryBase.
- key
- Key of the object to change
- oldValue
- Documentation for this section has not yet been entered.
- newValue
- Documentation for this section has not yet been entered.
Derived classes can override this method and perform some action before the current_value is changed in the dictionary.
Namespace: System.Collections
Assembly: mscorlib (in mscorlib.dll)
Assembly Versions: 1.0.5000.0, 2.0.0.0