P

AnalyticalModelSurface.TopExtensionPlaneId

Description:
The top extension plane ID option.

Remarks:
Analytical model elements for walls support extension options, while those for floor or slabs do not. This Plane identifies a Level, a Grid, or a Ref Plane. To validate plane use [!:Autodesk::Revit::DB::Structure::AnalyticalModelSurface::isPlaneValidForExtension] method. To chcek if analytical model support extension use HasExtension property. If used on analytical model that do not support extension, exception InvalidOperationException will be thrown.

public ElementId TopExtensionPlaneId { get; set; }

Public Property TopExtensionPlaneId As ElementId
Get
Set

public:
property ElementId^ TopExtensionPlaneId {
	ElementId^ get ();
	void set (ElementId^ value);
}

Autodesk.Revit.Exceptions.ArgumentNullException

When setting this property: A non-optional argument was null