Keyboard.PreviewKeyDown Attached Event (System.Windows.Input)

.NET Framework Class Library

Keyboard..::.PreviewKeyDown Attached Event

Occurs when a key on the keyboard is pressed.

Namespace: System.Windows.Input
Assembly: PresentationCore (in PresentationCore.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation

Syntax

Visual Basic (Declaration)

See AddPreviewKeyDownHandler, RemovePreviewKeyDownHandler

Visual Basic (Usage)

See AddPreviewKeyDownHandler, RemovePreviewKeyDownHandler

See AddPreviewKeyDownHandler, RemovePreviewKeyDownHandler

Visual C++

See AddPreviewKeyDownHandler, RemovePreviewKeyDownHandler

JScript

See AddPreviewKeyDownHandler, RemovePreviewKeyDownHandler

XAML Attribute Usage

<object Keyboard.PreviewKeyDown="KeyEventHandler" .../>

Routed Event Information

Identifier field	PreviewKeyDownEvent
Routing strategy	Tunneling
Delegate	KeyEventHandler

The corresponding bubbling event is KeyDown.

Remarks

This is an attached event. WPF implements attached events as routed events. Attached events are fundamentally a XAML language concept for referencing events that can be handled on objects that do not define that event, which WPF expands upon by also enabling the event to traverse a route. Attached events do not have a direct handling syntax in code; to attach handlers for a routed event in code, you use a designated Add*Handler method. For details, see Attached Events Overview.

Platforms

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.

Version Information

.NET Framework

Supported in: 3.5, 3.0

Reference

Keyboard Class

Keyboard Members

System.Windows.Input Namespace

Other Resources

Input Overview

Attached Events Overview

Preview Events