Share Email Facebook Twitter LinkedIn Definitions.Size Property The number of definitions in the collection.Namespace: Autodesk.Revit.DBAssembly: RevitAPI (in RevitAPI.dll) Version: 25.3.0.0 (25.3.0.0) Syntax C# public int Size { get; }Property ValueInt32 See AlsoReferenceDefinitions ClassAutodesk.Revit.DB Namespace