Occurs when checking whether a View can be closed.
The QueryCanClose event handler receives an argument of the CancelEventArgs type. The following properties provide information specific to this event.
|Cancel||Gets or sets a value indicating whether the event should be canceled.|
The QueryCanClose event is raised as a result of calling the View.CanClose and View.Close methods. Handle this event to prohibit closing a View under certain conditions. For this purpose, set the handler's CancelEventArgs.Cancel parameter to true. By default, this parameter is set to false.
The QueryCanClose event is raised for root views only (see View.IsRoot).