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Create Method (Document, IList(CurveLoop), ElementId, ElementId)

Creates a new instance of ceiling within the project.

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 23.0.0.0 (23.1.0.0)
Since: 2022

Syntax

C# 
public static Ceiling Create(
	Document document,
	IList<CurveLoop> curveLoops,
	ElementId ceilingTypeId,
	ElementId levelId
)
Visual Basic 
Public Shared Function Create ( _
	document As Document, _
	curveLoops As IList(Of CurveLoop), _
	ceilingTypeId As ElementId, _
	levelId As ElementId _
) As Ceiling
Visual C++ 
public:
static Ceiling^ Create(
	Document^ document, 
	IList<CurveLoop^>^ curveLoops, 
	ElementId^ ceilingTypeId, 
	ElementId^ levelId
)

Parameters

document
Type: Autodesk.Revit.DB Document
The document in which the new ceiling is created.
curveLoops
Type: System.Collections.Generic IList CurveLoop
An array of planar curve loops that represent the profile of the ceiling.
ceilingTypeId
Type: Autodesk.Revit.DB ElementId
Id of the ceiling type to be used by the new ceiling. If InvalidElementId is passed, the default type will be used.
levelId
Type: Autodesk.Revit.DB ElementId
Id of the level on which the ceiling is to be placed.

Return Value

If successful a new ceiling object within the project.

Remarks

To validate curve loop profile use BoundaryValidation .

Examples

Copy C# 
Ceiling CreateCeilingAtElevation(Document document, Level level, double elevation)
{
   XYZ first = new XYZ(0, 0, 0);
   XYZ second = new XYZ(20, 0, 0);
   XYZ third = new XYZ(20, 15, 0);
   XYZ fourth = new XYZ(0, 15, 0);
   CurveLoop profile = new CurveLoop();
   profile.Append(Line.CreateBound(first, second));
   profile.Append(Line.CreateBound(second, third));
   profile.Append(Line.CreateBound(third, fourth));
   profile.Append(Line.CreateBound(fourth, first));

   var ceiling = Ceiling.Create(document, new List<CurveLoop> { profile }, ElementId.InvalidElementId, level.Id);
   Parameter param = ceiling.get_Parameter(BuiltInParameter.CEILING_HEIGHTABOVELEVEL_PARAM);
   param.Set(elevation);

   return ceiling;
}
Copy VB.NET 
Private Function CreateCeilingAtElevation(ByVal document As Document, ByVal level As Level, ByVal elevation As Double) As Ceiling
    Dim first As XYZ = New XYZ(0, 0, 0)
    Dim second As XYZ = New XYZ(20, 0, 0)
    Dim third As XYZ = New XYZ(20, 15, 0)
    Dim fourth As XYZ = New XYZ(0, 15, 0)
    Dim profile As CurveLoop = New CurveLoop()
    profile.Append(Line.CreateBound(first, second))
    profile.Append(Line.CreateBound(second, third))
    profile.Append(Line.CreateBound(third, fourth))
    profile.Append(Line.CreateBound(fourth, first))
    Dim ceiling = Autodesk.Revit.DB.Ceiling.Create(document, New List(Of CurveLoop) From {
        profile
    }, ElementId.InvalidElementId, level.Id)
    Dim param As Parameter = ceiling.Parameter(BuiltInParameter.CEILING_HEIGHTABOVELEVEL_PARAM)
    param.[Set](elevation)
    Return ceiling
End Function

Private Function IExternalCommand_Execute(commandData As ExternalCommandData, ByRef message As String, elements As ElementSet) As Result Implements IExternalCommand.Execute
    Throw New NotImplementedException()
End Function

Exceptions

Exception Condition
Autodesk.Revit.Exceptions ArgumentException The ElementId levelId is not a Level. -or- The ElementId ceilingTypeId does not correspond to a CeilingType. -or- The input curve loops cannot compose a valid boundary, that means: the "curveLoops" collection is empty; or some curve loops intersect with each other; 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 input curves contain at least one helical curve. -or- Input curves build invalid sketch. -or- Failed to create curve elements.
Autodesk.Revit.Exceptions ArgumentNullException A non-optional argument was null
Autodesk.Revit.Exceptions InvalidOperationException Cannot generate a sketch. -or- Failed to create new element.
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