Contains values specifying the type of selection that must be specified to make an Action enabled.
An Action availability does not depend how many objects are currently selected.
An Action is available when one or more objects are selected.
An Action is available when a single object is selected.
Members of the SelectionDependencyType enumeration specify all available object selection types. To get the enumeration value which is currently used by an Action, use the ActionBase.SelectionDependencyType property.