RoutedPropertyChangedEventArgs<T>.OldValue Property

Gets the previous value of the property as reported by a property-changed event.

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


Public Property OldValue As T
public T OldValue { get; private set; }

Property Value

Type: T
The generic value. In a practical implementation of the RoutedPropertyChangedEventArgs<T>, the generic type of this property is replaced with the constrained type of the implementation.


The value and type constraint of this property are established by the RoutedPropertyChangedEventArgs<T> constructor's type arguments.

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.