Share Email Facebook Twitter LinkedIn IFCFileWriteOptions Constructor Creates a default IFCFileWriteOptions. The default file format is ifc. Namespace: Autodesk.Revit.DB.IFCAssembly: RevitAPIIFC (in RevitAPIIFC.dll) Version: 25.3.0.0 (25.3.0.0) Syntax C# public IFCFileWriteOptions() See AlsoReferenceIFCFileWriteOptions ClassAutodesk.Revit.DB.IFC Namespace