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Leadtools.Windows.Annotations Namespace > AnnObject Class : OnHeaderChanged Method |
protected virtual void OnHeaderChanged( RoutedPropertyChangedEventArgs<string> e )
'Declaration Protected Overridable Sub OnHeaderChanged( _ ByVal e As RoutedPropertyChangedEventArgs(Of String) _ )
'Usage Dim instance As AnnObject Dim e As RoutedPropertyChangedEventArgs(Of String) instance.OnHeaderChanged(e)
protected: virtual void OnHeaderChanged( RoutedPropertyChangedEventArgs<String^>^ e )
Raising an event invokes the event handler through a delegate.
The OnHeaderChanged method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.
Notes to Inheritors: When overriding OnHeaderChanged in a derived class, be sure to call the base class's OnHeaderChanged method so that registered delegates receive the event.