using Autodesk.Revit.Attributes; using Autodesk.Revit.DB; using Autodesk.Revit.UI; using UIFrameworkServices; namespace TestAddIn2013 { [Transaction(TransactionMode.Manual)] public class IsDemoModeCommand : IExternalCommand { public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements) { bool isDemoMode = InfoCenterService.ProductSerialNumber.Equals("000-00000000"); TaskDialog.Show("Is demo mode", string.Format("Is demo mode: {0}", isDemoMode)); return Result.Succeeded; } } }