View Plan Set Underlay Range Method

Sets the underlay base and underlay top to the specified levels.

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.3.0.0 (25.3.0.0)

Syntax

public void SetUnderlayRange(
	ElementId baseLevelId,
	ElementId topLevelId
)

Public Sub SetUnderlayRange ( 
	baseLevelId As ElementId,
	topLevelId As ElementId
)

public:
void SetUnderlayRange(
	ElementId^ baseLevelId, 
	ElementId^ topLevelId
)

member SetUnderlayRange : 
        baseLevelId : ElementId * 
        topLevelId : ElementId -> unit

baseLevelId ElementId: The element id of a level in the project or InvalidElementId. If InvalidElementId, then the underlay base level is not set and no elements will be displayed as underlay.
topLevelId ElementId: The element id of a level in the project or InvalidElementId. If InvalidElementId, then the underlay range is unbounded.

Exceptions

Exception	Condition
ArgumentException	The ElementId baseLevelId does not correspond to a Level in the project. -or- The ElementId topLevelId does not correspond to a Level in the project. -or- The elevation of level topLevelId must be greater than the elevation of level baseLevelId.
ArgumentNullException	A non-optional argument was null