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UIElement.KeyDown Event

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

public event KeyEventHandler KeyDown
<object KeyDown="KeyEventHandler" .../>

Implements

IInputElement.KeyDown

Identifier field

KeyDownEvent

Routing strategy

Bubbling

Delegate

KeyEventHandler

  • The corresponding tunneling event is PreviewKeyDown.

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

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

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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