PreviewKeyUp Event
Collapse the table of content
Expand the table of content

UIElement.PreviewKeyUp Event


Occurs when a key is released while focus is on this element.

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

public event KeyEventHandler PreviewKeyUp

Key handling interacts with other platform features such as commanding and text composition. The KeyUp event is a lower-level text input event that might not behave as expected on certain controls. This is because some controls have control compositing or class handling that provides a higher-level version of text input handling and related events. For details, check the documentation for individual controls.

This event creates an alias for the Keyboard.PreviewKeyUp attached event for this class, so that PreviewKeyUp is part of the class members list when UIElement is inherited as a base element. Event handlers that are attached to the PreviewKeyUp event are attached to the underlying Keyboard.PreviewKeyUp attached event and receive the same event data instance.

Identifier field


Routing strategy




  • The corresponding bubbling event is KeyUp.

  • Override OnPreviewKeyUp to implement class handling for this event in derived classes.

.NET Framework
Available since 3.0
Return to top
© 2015 Microsoft