Compound |
Returns the index of the layer just below the core boundary.
Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)

Parameters
- shellLayerType ShellLayerType
- If ShellLayerType.Exterior return the index on the exterior side (or top side for a roof, floor, or ceiling type). If ShellLayerType.Interior return the index on the interior side (or bottom side for a roof, floor, or ceiling type).
Return Value
Int32The index of the layer.

Exception | Condition |
---|---|
ArgumentOutOfRangeException | A value passed for an enumeration argument is not a member of that enumeration |

-1 returned if there is no such a layer. You can change the shell/core layer boundary using SetNumberOfShellLayers(ShellLayerType, Int32) .
