The PreEventArgs type exposes the following members.
Properties
| Name | Description | |
|---|---|---|
 | Cancel |
Indicates whether the event is being cancelled.
When the event is cancellable, set the property to True to cancel it.
(Inherited from RevitEventArgs) |
| Cancellable |
Indicates whether an event may be cancelled by an event delegate.
(Inherited from RevitEventArgs) |