Microsoft Silverlight will reach end of support after October 2021. Learn more.
Represents methods that handle various routed events that track property values changing. Typically the events denote a cancellable action.
Assembly: System.Windows.Controls (in System.Windows.Controls.dll)
'Declaration Public Delegate Sub RoutedPropertyChangingEventHandler(Of T) ( _ sender As Object, _ e As RoutedPropertyChangingEventArgs(Of T) _ )
public delegate void RoutedPropertyChangingEventHandler<T>( Object sender, RoutedPropertyChangingEventArgs<T> e )
The type of the value for the dependency property that is changing.
The object where the initiating property is changing.
Event data for the event,
The difference between RoutedPropertyChanged events and RoutedPropertyChanging events is that RoutedPropertyChanging events typically give the application an opportunity to cancel the property change, by setting Cancel to true in the event data.
Supported in: 5, 4, 3
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.