Returns the element id of the level that defines the bottom of the underlay range.
Namespace: Autodesk.Revit.DBAssembly: RevitAPI (in RevitAPI.dll) Version: 26.4.0.0 (26.4.0.0)
Syntax
C#
public ElementId GetUnderlayBaseLevel()
Return Value
ElementId
If InvalidElementId is returned, then the underlay base level is not set and no elements will be displayed as underlay.
See Also
Reference