P

AnalyticalModelColumn.TopExtensionPlaneId

Description:
The top extension plane ID option.

Remarks:
This Plane identifies a Level, a Grid, or a Ref Plane. To validate plane use [!:Autodesk::Revit::DB::Structure::AnalyticalModelColumn::isPlaneValidForExtension] method.

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