Informs the receiver that the number of items in its data source has changed.
Original signature is '- (void)noteNumberOfItemsChanged'
Available in Mac OS X v10.0 and later.

C# | Visual Basic | Visual C++ |
public virtual void NoteNumberOfItemsChanged()
Public Overridable Sub NoteNumberOfItemsChanged
public: virtual void NoteNumberOfItemsChanged()

- Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later), 10.5 (For Mac OS X 10.5 and later)