Occurs when a key is pressed while focus is on this element.
Namespace:
System.Windows
Assembly:
PresentationCore (in PresentationCore.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation
Visual Basic (Declaration)
Public Event PreviewKeyDown As KeyEventHandler
Dim instance As UIElement
Dim handler As KeyEventHandler
AddHandler instance.PreviewKeyDown, handler
public event KeyEventHandler PreviewKeyDown
public:
virtual event KeyEventHandler^ PreviewKeyDown {
void add (KeyEventHandler^ value);
void remove (KeyEventHandler^ value);
}
JScript does not support events.
<object PreviewKeyDown="KeyEventHandler" .../>
Implements
IInputElement..::.PreviewKeyDown
Key handling interacts with other platform features such as commanding and text composition. The KeyDown 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.
This event creates an alias for the Keyboard..::.PreviewKeyDown attached event for this class, so that PreviewKeyDown is part of the class members list when UIElement is inherited as a base element. Event handlers that are attached to the PreviewKeyDown event are attached to the underlying Keyboard..::.PreviewKeyDown attached event and receive the same event data instance.
Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
.NET Framework
Supported in: 3.5, 3.0
Reference
Other Resources