Gets the extendable region ids for the compound structure.

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

Syntax

C#
`public IList<int> GetExtendableRegionIds( bool top )`

Visual Basic
`Public Function GetExtendableRegionIds ( _ top As Boolean _ ) As IList(Of Integer)`

Visual C++
`public: IList<int>^ GetExtendableRegionIds( bool top )`

top: Type: System Boolean
If true, retrieve ids of regions which are extendable at the top, otherwise retrieve the ids of regions which are extendable at the bottom.

An array of region ids which are marked extendable.

Remarks

Regions along the top or bottom of the wall may be set to be extendable.

Exception	Condition
Autodesk.Revit.Exceptions InvalidOperationException	This operation is valid only for vertically compound structures.