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UIElement::PreviewTouchDown Event

.NET Framework 4.6 and 4.5

Occurs when a finger touches the screen while the finger is over this element.

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

event EventHandler<TouchEventArgs^>^ PreviewTouchDown {
	void add(EventHandler<TouchEventArgs^>^ value);
	void remove(EventHandler<TouchEventArgs^>^ value);

By default, the PreviewTouchDown and TouchDown events do not occur until a finger touches the screen and moves. Pressing a finger on the screen and holding it without moving it causes the press and hold behavior of a Stylus. The press and hold behavior is equivalent to a mouse right-click.

To cause the PreviewTouchDown and TouchDown events to occur as soon as a finger touches the screen, set the Stylus::IsPressAndHoldEnabled attached property to false for this element.

Identifier field


Routing strategy



EventHandler<TEventArgs> of type TouchEventArgs.

  • The corresponding bubbling event is TouchDown.

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

.NET Framework
Available since 4.0
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