Number |
Creates a new instance of a NumberSystem associated to a host element, a view, and a reference level of stairs if in a multistory stairs.
Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)

public static NumberSystem Create(
Document document,
ElementId viewId,
LinkElementId hostElementId,
StairsNumberSystemReferenceOption referenceOption,
LinkElementId placementLevelId
)
Parameters
- document Document
- The document.
- viewId ElementId
- The view in which the NumberSystem will be created.
- hostElementId LinkElementId
- The host id on which the NumberSystem will be created.
- referenceOption StairsNumberSystemReferenceOption
- The reference option of the NumberSystem.
- placementLevelId LinkElementId
- The id of the level on which the NumberSystem will be placed. The placement level must be one of the base levels of a stairs group members. It is suggested to get the level from MultistoryStairs.GetStairsPlacementLevels().
Return Value
NumberSystemThe created NumberSystem.

Exception | Condition |
---|---|
ArgumentException | viewId is not valid for placement of a NumberSystem (only floor plan views and elevation views are permitted). -or- hostElementId is not valid as a host for NumberSystem (only StairsRun elements are permitted in this release). -or- The reference option is not valid for a NumberSystem. -or- The placementLevelId is not one of the stairs base levels. -or- The hostElementId already has a number system. |
ArgumentNullException | A non-optional argument was null |
ArgumentOutOfRangeException | A value passed for an enumeration argument is not a member of that enumeration |

In multistory stairs, a stairs element could be a stair group or individual stair. This method allows to add a NumberSystem for a run of an individual stairs or a stairs group member on the placementLevelId.
