Wall Is |
Says whether the element id can be used as a target for a new attachment.
Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.3.0.0 (25.3.0.0)

Parameters
- doc Document
- Current Revit document.
- targetId ElementId
- A proposed target element id for a wall attachment.
Return Value
BooleanReturns true if the element id can be used as a target for a new attachment, false otherwise.

Exception | Condition |
---|---|
ArgumentNullException | A non-optional argument was null |

Valid targets are roofs, floors, ceilings, toposolids, or other walls.
