Share Email Facebook Twitter LinkedIn Application.VersionNumber Property Return the primary version of the Revit application. Namespace: Autodesk.Revit.ApplicationServicesAssembly: RevitAPI (in RevitAPI.dll) Version: 26.4.0.0 (26.4.0.0) Syntax C# public string VersionNumber { get; }Property ValueString Remarks This property can be used by your application to find the version of Revit against which your application is running. Based on this information your application can report if it is able to work correctly with that version of Revit. See AlsoReferenceApplication ClassAutodesk.Revit.ApplicationServices Namespace