| Revit 2024 API | 
| TopRail Properties | 
| TopRail Class See Also | 
The TopRail type exposes the following members.
Properties
| Name | Description | |
|---|---|---|
| AssemblyInstanceId | 
   The id of the assembly instance to which the element belongs.
  (Inherited from Element.) | |
| BoundingBox | Retrieves a box that circumscribes all geometry of the element.  (Inherited from Element.) | |
| Category | Retrieves a Category object that represents the category or sub category in which the
element resides.  (Inherited from Element.) | |
| CreatedPhaseId | 
   Id of a Phase at which the Element was created.
  (Inherited from Element.) | |
| DemolishedPhaseId | 
   Id of a Phase at which the Element was demolished.
  (Inherited from Element.) | |
| DesignOption | Returns the design option to which the element belongs.  (Inherited from Element.) | |
| Document | Returns the Document in which the Element resides.  (Inherited from Element.) | |
| Geometry | Retrieves the geometric representation of the element.  (Inherited from Element.) | |
| GroupId | 
   The id of the group to which an element belongs.
  (Inherited from Element.) | |
| HostRailingId | 
   The id of the host Railing that contains this rail.
  (Inherited from ContinuousRail.) | |
| Id | 
   A unique identifier for an Element in an Autodesk Revit project.
  (Inherited from Element.) | |
| IsModifiable | 
   Identifies if the element is modifiable.
  (Inherited from Element.) | |
| IsTransient | 
   Indicates whether an element is transient or permanent.
  (Inherited from Element.) | |
| IsValidObject | 
   Specifies whether the .NET object represents a valid Revit entity.
  (Inherited from Element.) | |
| Length | 
   The length of the rail.
  (Inherited from ContinuousRail.) | |
| LevelId | 
   The id of the level associated with the element.
  (Inherited from Element.) | |
| Location | This property is used to find the physical location of an element within a project.  (Inherited from Element.) | |
| Name | A human readable name for the Element.  (Inherited from Element.) | |
| OwnerViewId | 
   The id of the view that owns the element.
  (Inherited from Element.) | |
| Parameter[([( Guid])]) | Retrieves a parameter from the element given a GUID for a shared parameter.  (Inherited from Element.) | |
| Parameter[([( BuiltInParameter])]) | Retrieves a parameter from the element given a parameter id.  (Inherited from Element.) | |
| Parameter[([( Definition])]) | Retrieves a parameter from the element based on its definition.  (Inherited from Element.) | |
| Parameters | Retrieves a set containing all of the parameters that are contained within the element.  (Inherited from Element.) | |
| ParametersMap | Retrieves a map containing all of the parameters that are contained within the element.  (Inherited from Element.) | |
| Pinned | 
   Identifies if the element has been pinned to prevent changes.
  (Inherited from Element.) | |
| UniqueId | 
   A stable unique identifier for an element within the document.
  (Inherited from Element.) | |
| VersionGuid | 
   Get the element version Guid.
  (Inherited from Element.) | |
| ViewSpecific | 
   Identifies if the element is owned by a view.
  (Inherited from Element.) | |
| WorksetId | 
   Get Id of the Workset which owns the element.
  (Inherited from Element.) |