RoutedPropertyChangedEventArgs Generic Class

Provides data about a change in value to a dependency property as reported by particular routed events, including the previous and current value of the property that changed.

Namespace: System.Windows
Assembly: PresentationFramework (in presentationframework.dll)
XML Namespace:

public class RoutedPropertyChangedEventArgs<T> : RoutedEventArgs
J# supports the use of generic types and methods, but not the declaration of new ones.
JScript does not support generic types and methods.
You cannot use this managed class in XAML.

Type Parameters


Type of the dependency property that has changed.

This is a generic class. Different routed events can specify the type constraint of the generic to produce an effective specific event data class. The OldValue and NewValue properties can be established with type constraints, without requiring different delegates for each possible property type.

Routed events that reports a property change where the delegate incorporates this arguments class include ValueChanged, where the type constraint (and old and new values passed in the arguments) is of type Double, and SelectedItemChanged,where the type constraint is Object.


Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0