BuildingCoder.CmdColumnRound.Execute C# (CSharp) Метод

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

              //Element column = null;
              //Selection sel = uidoc.Selection;
              //
              //if( 1 == sel.GetElementIds().Count )
              //{
              //  foreach( Element e in sel.Elements )
              //  {
              //    column = e;
              //  }
              //  if( !IsColumn( column ) )
              //  {
              //    column = null;
              //  }
              //}
              //
              //if( null == column )
              //{
              //
              //#if _2010
              //  sel.Elements.Clear();
              //  sel.StatusbarTip = "Please select a column";
              //  if( sel.PickOne() )
              //  {
              //    ElementSetIterator i
              //      = sel.Elements.ForwardIterator();
              //    i.MoveNext();
              //    column = i.Current as Element;
              //  }
              //#endif // _2010
              //
              //  Reference r = uidoc.Selection.PickObject( ObjectType.Element,
              //    "Please select a column" );
              //
              //  if( null != r )
              //  {
              //    // 'Autodesk.Revit.DB.Reference.Element' is
              //    // obsolete: Property will be removed. Use
              //    // Document.GetElement(Reference) instead.
              //    //column = r.Element; // 2011
              //
              //    column = doc.GetElement( r ); // 2012
              //
              //    if( !IsColumn( column ) )
              //    {
              //      message = "Please select a single column instance";
              //    }
              //  }
              //}

              Result rc = Result.Failed;

              Element column = Util.SelectSingleElementOfType(
            uidoc, typeof( FamilyInstance ), "column", true );

              if( null == column || !IsColumn( column ) )
              {
            message = "Please select a single column instance";
              }
              else
              {
            Options opt = app.Application.Create.NewGeometryOptions();
            GeometryElement geo = column.get_Geometry( opt );
            GeometryInstance i = null;

            //GeometryObjectArray objects = geo.Objects; // 2012
            //foreach( GeometryObject obj in objects ) // 2012

            foreach( GeometryObject obj in geo ) // 2013
            {
              i = obj as GeometryInstance;
              if( null != i )
              {
            break;
              }
            }
            if( null == i )
            {
              message = "Unable to obtain geometry instance";
            }
            else
            {
              bool isCylindrical = false;
              geo = i.SymbolGeometry;

              //objects = geo.Objects; // 2012
              //foreach( GeometryObject obj in objects ) // 2012

              foreach( GeometryObject obj in geo )
              {
            Solid solid = obj as Solid;
            if( null != solid )
            {
              foreach( Face face in solid.Faces )
              {
                if( face is CylindricalFace )
                {
                  isCylindrical = true;
                  break;
                }
              }
            }
              }
              message = string.Format(
            "Selected column instance is{0} cylindrical",
            ( isCylindrical ? "" : " NOT" ) );
            }
            rc = Result.Succeeded;
              }
              return rc;
        }