using System; using System.Reflection; using Autodesk.Revit.Attributes; using Autodesk.Revit.DB; using Autodesk.Revit.UI; namespace RevitAddin.Revit.Commands { [Transaction(TransactionMode.Manual)] public class Command : IExternalCommand { public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elementSet) { UIApplication uiapp = commandData.Application; System.Windows.MessageBox.Show(uiapp.Application.VersionName); return Result.Succeeded; } } }