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

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0)
Since: 2012

Syntax

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

Visual Basic
`Public Shared Sub RemoveMassLevelDataFromMassInstance ( _ document As Document, _ massInstanceId As ElementId, _ levelId As ElementId _ )`

Visual C++
`public: static void RemoveMassLevelDataFromMassInstance( Document^ document, ElementId^ massInstanceId, ElementId^ levelId )`

massInstanceId: Type: Autodesk.Revit.DB ElementId
The ElementId of the mass instance.

levelId: Type: Autodesk.Revit.DB ElementId
The ElementId of the Level to disassociate from the mass instance.

Remarks

Alternatively, you could just delete the MassLevelData.

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