Creates a new instance of ceiling within the project.

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 24.0.0.0 (24.0.0.0)
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.DBDocument
The document in which the new ceiling is created.

curveLoops: Type: System.Collections.GenericIListCurveLoop
An array of planar curve loops that represent the profile of the ceiling.

ceilingTypeId: Type: Autodesk.Revit.DBElementId
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.DBElementId
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

CopyC#

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;
}

CopyVB.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.ExceptionsArgumentException	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.ExceptionsArgumentNullException	A non-optional argument was null
Autodesk.Revit.ExceptionsInvalidOperationException	Cannot generate a sketch. -or- Failed to create new element.
Autodesk.Revit.ExceptionsModificationForbiddenException	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.ExceptionsModificationOutsideTransactionException	The document has no open transaction.

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