MassInstanceUtils.RemoveMassLevelDataFromMassInstance Method

Delete the MassLevelData (Mass Floor) that associates a Level with a mass instance.

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 26.1.0.0 (26.1.0.34)

Syntax

public static void RemoveMassLevelDataFromMassInstance(
	Document document,
	ElementId massInstanceId,
	ElementId levelId
)

document Document: The Document.
massInstanceId ElementId: The ElementId of the mass instance.
levelId ElementId: The ElementId of the Level to disassociate from the mass instance.

Exception	Condition
ArgumentException	The ElementId massInstanceId is not a mass instance. -or- The ElementId levelId is not a Level.
ArgumentNullException	A non-optional argument was null

Alternatively, you could just delete the MassLevelData.