UIElement.PreviewKeyDown Event

Definition

Namespace:: Windows.UI.Xaml

Edit

Occurs when a keyboard key is pressed while the UIElement has focus.

Equivalent WinUI event: Microsoft.UI.Xaml.UIElement.PreviewKeyDown.

public:
 virtual event KeyEventHandler ^ PreviewKeyDown;

// Register
event_token PreviewKeyDown(KeyEventHandler const& handler) const;

// Revoke with event_token
void PreviewKeyDown(event_token const* cookie) const;

// Revoke with event_revoker
PreviewKeyDown_revoker PreviewKeyDown(auto_revoke_t, KeyEventHandler const& handler) const;

public event KeyEventHandler PreviewKeyDown;

function onPreviewKeyDown(eventArgs) { /* Your code */ }
uIElement.addEventListener("previewkeydown", onPreviewKeyDown);
uIElement.removeEventListener("previewkeydown", onPreviewKeyDown);
- or -
uIElement.onpreviewkeydown = onPreviewKeyDown;

Public Custom Event PreviewKeyDown As KeyEventHandler

<uiElement PreviewKeyDown="eventhandler"/>

Event Type

KeyEventHandler

Windows 10 requirements

Device family	Windows 10 Fall Creators Update (introduced in 10.0.16299.0)
API contract	Windows.Foundation.UniversalApiContract (introduced in v5.0)

Remarks

PreviewKeyDown is a routed event. For more info on the routed event concept, see Events and routed events overview.

This event uses the tunneling routing strategy. The corresponding bubbling event is KeyDown.

Applies to