BuildingCoder.CmdUpdateReferencingSheet.Execute C# (CSharp) Метод

        public Result Execute(
            ExternalCommandData commandData,
            ref string message,
            ElementSet elements)
        {
            Document doc = commandData.Application
            .ActiveUIDocument.Document;

              ViewSection selectedViewport
            = doc.ActiveView as ViewSection;

              if( null == selectedViewport )
              {
            message = "Please run this command "
              + " in a section view";

            return Result.Failed;
              }
              else
              {
            UpdateReferencingSheet( selectedViewport );
            return Result.Succeeded;
              }
        }