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

Ceiling Create(Document, IList Curve Loop , Element Id, Element Id, Line, Double) Method

Creates a new instance of ceiling within the project.

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)
Syntax 
public static Ceiling Create(
	Document document,
	IList<CurveLoop> curveLoops,
	ElementId ceilingTypeId,
	ElementId levelId,
	Line slopeArrow,
	double slope
)

Parameters

document Document
The document in which the new ceiling is created.
curveLoops IList CurveLoop
An array of planar curve loops that represent the profile of the ceiling.
ceilingTypeId ElementId
Id of the ceiling type to be used by the new ceiling. If InvalidElementId is passed, the default type will be used.
levelId ElementId
Id of the level on which the ceiling is to be placed.
slopeArrow Line
A line used to control the slope angle of the Ceiling. It must be horizontal.
slope Double
The slope angle.

Return Value

Ceiling
If successful a new ceiling object within the project.
Exceptions
Exception Condition
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- The slopeArrow must be a horizontal line. -or- Input curves build invalid sketch. -or- Failed to create curve elements.
ArgumentNullException A non-optional argument was null
InvalidOperationException Cannot generate a sketch. -or- Failed to create new element.
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.
ModificationOutsideTransactionException The document has no open transaction.
Remarks
To validate curve loop profile use BoundaryValidation .
Example 
Ceiling CreateSlopedCeiling(Document document, Level level)
{
   XYZ first = new XYZ(0, 0, 0);
   XYZ second = new XYZ(20, 0, 0);
   XYZ third = new XYZ(20, 20, 0);
   XYZ fourth = new XYZ(0, 20, 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));

   Line slopeArrow = Line.CreateBound(new XYZ(10, 10, 0), new XYZ(11, 10, 0));
   return Ceiling.Create(document, new List<CurveLoop> { profile }, ElementId.InvalidElementId, level.Id, slopeArrow, Math.PI / 2);
}
See Also