The ExternalDefinition type exposes the following members.
Properties
| Name | Description | |
|---|---|---|
 | Description | The description of the parameter. The description will be used as tooltip in the Revit UI including in the properties palette. |
| GUID | Returns the GUID associated with the shared parameter definition. |
| HideWhenNoValue | Indicates whether this parameter should be hidden from the properties palette when it has no value. |
| IsValidObject | Specifies whether the .NET object represents a valid Revit entity. |
| Name | The user visible name for the parameter. (Overrides Definition.Name) |
| OwnerGroup | Returns or change the group ID of the external parameter definition. |
| UserModifiable | Indicates whether the parameter can be modified by the user interface. |
| Visible | Indicates if the parameter is visible in the Autodesk Revit user interface. |