Topography |
Gets the ids of all subregion elements hosted on this topography surface.
Namespace: Autodesk.Revit.DB.Architecture
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)


Exception | Condition |
---|---|
InvalidOperationException | This element is not a TopographySurface. |

This applies to a TopographySurface element (not a SiteSubRegion or a topography surface associated with a BuildingPad). This applies to TopographySurface and SiteSubRegion elements.
