Fires before a FlyoutControl is closed (hidden), and allows you to prevent this action.
The Closing event's data class is CancelEventArgs. The following properties provide information specific to this event:
|Cancel||Gets or sets a value indicating whether the event should be canceled.|
To prevent a FlyoutControl from being closed (hidden), set the event's Cancel parameter to true, or set the FlyoutBase.StaysOpen property to true. After a flyout control is closed, the FlyoutBase.Closed event fires.