Windows Dev Center

ButtonBase.OnMouseLeftButtonUp Method

Provides class handling for the MouseLeftButtonUp event that occurs when the user lifts their finger while it is over this control.

Namespace:  System.Windows.Controls.Primitives
Assembly:  System.Windows (in System.Windows.dll)

'Declaration
Protected Overrides Sub OnMouseLeftButtonUp ( _
	e As MouseButtonEventArgs _
)

Parameters

e
Type: System.Windows.Input.MouseButtonEventArgs
The event data.

ExceptionCondition
ArgumentNullException

e is Nothing.

This method marks the MouseLeftButtonUp event as handled by setting the MouseButtonEventArgs.Handled property of the event data to true when the button is enabled and its ClickMode is not set to Hover. Since this method marks the MouseLeftButtonUp event as handled in some situations, you should use the Click event instead to detect a button tap.

Notes to Inheritors

If you override OnMouseLeftButtonUp, always call the base implementation in your OnMouseLeftButtonUp implementation. Failure to call the base implementation prevents base classes from handling the event with a class handler, which might change the run-time behavior of the final class. You can call the base implementation either before or after your special handling, depending on your requirements.

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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