ExternalCommandsData.AvailabilityClassName Property

The full class name for the class providing the entry point to decide availability of this menu item.

Namespace: Autodesk.Revit.UI
Assembly: RevitAPIUI (in RevitAPIUI.dll) Version: 26.1.0.0 (26.1.0.34)

Syntax

public string AvailabilityClassName { get; set; }

String

Exception	Condition
ArgumentNullException	When setting this property: A non-optional argument was null

This is the class implementing IExternalCommandAvailability interface.