TopLevelId Property
The top level id of the area based load boundary line.

Namespace: Autodesk.Revit.DB.Electrical
Assembly: RevitAPI (in RevitAPI.dll) Version: 24.0.0.0 (24.0.0.0)
Since:  2023

Syntax

C#
public ElementId TopLevelId { get; set; }
Visual Basic
Public Property TopLevelId As ElementId
	Get
	Set
Visual C++
public:
property ElementId^ TopLevelId {
	ElementId^ get ();
	void set (ElementId^ value);
}

Remarks

The top level's elevation cannot be lower than the bottom level.

Exceptions

ExceptionCondition
Autodesk.Revit.Exceptions..::..ArgumentException When setting this property: The ElementId levelId cannot be used as the top level. The ElementId levelId is not a Level or it's elevation is lower than the bottom level's elevation.
Autodesk.Revit.Exceptions..::..ArgumentNullException When setting this property: A non-optional argument was null

See Also

P:Autodesk.Revit.DB.Electrical.AreaBasedLoadBoundaryLineData.TopLevelId