RoutedPropertyChangedEventArgs<T> Constructor

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Initializes a new instance of the RoutedPropertyChangedEventArgs<T> class, with provided old and new values.

Namespace:  System.Windows
Assembly:  System.Windows (in System.Windows.dll)


Public Sub New ( _
    oldValue As T, _
    newValue As T _
public RoutedPropertyChangedEventArgs(
    T oldValue,
    T newValue


  • oldValue
    Type: T
    The previous value of the property, before the event was raised.
  • newValue
    Type: T
    The current value of the property at the time of the event.


The types passed must match the declared constraints of the specific generic.

Version Information


Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0


For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.