Revit Event Args Cancellable Property

Indicates whether an event may be cancelled by an event delegate.

Namespace: Autodesk.Revit.DB.Events
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)

Syntax

public virtual bool Cancellable { get; }

Public Overridable ReadOnly Property Cancellable As Boolean
	Get

public:
virtual property bool Cancellable {
	bool get ();
}

abstract Cancellable : bool with get
override Cancellable : bool with get

Property Value

Boolean

Remarks

If 'Cancellable' is true, event delegates may cancel the command that was announced by the event. To do so, a delegate would set the 'Cancel' property to True. Typically, post-events (e.g. DocumentPrinted) are not cancellable, while most pre-events (e.g. DocumentPrinting) are cancellable, except for special conditions and situations, such as when the Revit application is being closed or if an event is raised during another event.

Reference

RevitEventArgs Class

Autodesk.Revit.DB.Events Namespace