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