Revit 2026 API
Area |
The bottom level id of the area based load boundary line.
Namespace: Autodesk.Revit.DB.Electrical
Assembly: RevitAPI (in RevitAPI.dll) Version: 26.0.4.0 (26.0.4.0)
Syntax
public ElementId BottomLevelId { get; set; }
Public Property BottomLevelId As ElementId Get Set
public: property ElementId^ BottomLevelId { ElementId^ get (); void set (ElementId^ value); }
member BottomLevelId : ElementId with get, set
Property Value
ElementId
Exception | Condition |
---|---|
ArgumentException | When setting this property: The ElementId levelId cannot be used as the bottom level. The ElementId levelId is not a Level or it's elevation is higher than the top level's elevation. |
ArgumentNullException | When setting this property: A non-optional argument was null |

The bottom level's elevation cannot be higher than the top level.
See Also