Create Method (Document, IList(CurveLoop), ElementId)
Creates a new SiteSubRegion element with assigned TopographySurface to be hosted and adds it to the document.

Namespace: Autodesk.Revit.DB.Architecture
Assembly: RevitAPI (in RevitAPI.dll) Version: 24.0.0.0 (24.0.0.0)
Since:  2014

Syntax

C#
[ObsoleteAttribute("This method is deprecated in Revit 2024 with the introduction of the new Toposolid elements.  It is recommended that Toposolid elements should be used in place of TopographySurface elements.")]
public static SiteSubRegion Create(
	Document document,
	IList<CurveLoop> curveLoops,
	ElementId hostTopoSurfaceId
)
Visual Basic
<ObsoleteAttribute("This method is deprecated in Revit 2024 with the introduction of the new Toposolid elements.  It is recommended that Toposolid elements should be used in place of TopographySurface elements.")> _
Public Shared Function Create ( _
	document As Document, _
	curveLoops As IList(Of CurveLoop), _
	hostTopoSurfaceId As ElementId _
) As SiteSubRegion
Visual C++
[ObsoleteAttribute(L"This method is deprecated in Revit 2024 with the introduction of the new Toposolid elements.  It is recommended that Toposolid elements should be used in place of TopographySurface elements.")]
public:
static SiteSubRegion^ Create(
	Document^ document, 
	IList<CurveLoop^>^ curveLoops, 
	ElementId^ hostTopoSurfaceId
)

Parameters

document
Type: Autodesk.Revit.DB..::..Document
The document to be modified.
curveLoops
Type: System.Collections.Generic..::..IList<(Of <(<'CurveLoop>)>)>
The boundary of the subregion.
hostTopoSurfaceId
Type: Autodesk.Revit.DB..::..ElementId
The element id of a TopographySurface assigned to be a host of new created SiteSubRegion.

Return Value

The new SubRegion surface.

Remarks

This will create a new TopographySurface element which represents a subregion with a host TopographySurface assigned. If you need access to this Element you can obtain it from the TopographySurface property. See TopographySurface for details.

Exceptions

ExceptionCondition
Autodesk.Revit.Exceptions..::..ArgumentException The input curve loops cannot compose a valid boundary, that means: no curve loop is contained in the given collection; these curve loops intersect with each other for some of them; or each curve loop is not closed individually; or each curve loop is not planar; or each curve loop is not in a plane parallel to the horizontal(XY) plane. -or- The ElementId hostTopoSurfaceId does not represent a TopographySurface.
Autodesk.Revit.Exceptions..::..ArgumentNullException A non-optional argument was null
Autodesk.Revit.Exceptions..::..InvalidOperationException Failed to create the Sketch for the boundary of the current Subregion. -or- Cannot associate the new subregion with the assigned host because there is no geometric overlap, or they have mismatched design options. -or- The given curve loops intersect with curve loops of existing SiteSubRegions hosted on the same TopographySurface. -or- The boundary of SubRegion is entirely inside or overlaps at least one existing BuildingPad hosted on the same TopographySurface. This behavior is not allowed.
Autodesk.Revit.Exceptions..::..ModificationForbiddenException The document is in failure mode: an operation has failed, and Revit requires the user to either cancel the operation or fix the problem (usually by deleting certain elements). -or- The document is being loaded, or is in the midst of another sensitive process.
Autodesk.Revit.Exceptions..::..ModificationOutsideTransactionException The document has no open transaction.

See Also

M:Autodesk.Revit.DB.Architecture.SiteSubRegion.Create(Autodesk.Revit.DB.Document,System.Collections.Generic.IList{Autodesk.Revit.DB.CurveLoop},Autodesk.Revit.DB.ElementId)