The DialogBoxShowingEventArgs type exposes the following members.
Properties
| Name | Description | |
|---|---|---|
 | Cancellable | Indicates whether an event may be cancelled by an event delegate. (Inherited from RevitAPIEventArgs .) |
| | DialogId | A unique string identifier for DialogBox and TaskDialog type dialogs in Revit. |
| | IsValidObject | Specifies whether the .NET object represents a valid Revit entity. (Inherited from RevitAPIEventArgs .) |