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Leadtools.Windows.Controls Namespace > ImageViewer Class : OnImageVerticalAlignmentChanged Method |
protected virtual void OnImageVerticalAlignmentChanged( RoutedPropertyChangedEventArgs<VerticalAlignment> e )
'Declaration Protected Overridable Sub OnImageVerticalAlignmentChanged( _ ByVal e As RoutedPropertyChangedEventArgs(Of VerticalAlignment) _ )
'Usage Dim instance As ImageViewer Dim e As RoutedPropertyChangedEventArgs(Of VerticalAlignment) instance.OnImageVerticalAlignmentChanged(e)
protected: virtual void OnImageVerticalAlignmentChanged( RoutedPropertyChangedEventArgs<VerticalAlignment>^ e )
Raising an event invokes the event handler through a delegate.
The OnImageVerticalAlignmentChanged 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 OnImageVerticalAlignmentChanged in a derived class, be sure to call the base class's OnImageVerticalAlignmentChanged method so that registered delegates receive the event.