Revit 二次开发 获取选中的对象

领导脑瓜一拍，决定结合Revit开发产品，俺可惨了，两眼一抹黑，在他拍脑袋前，俺连Revit是什么、干嘛用的都不知道，硬着头皮上吧。老了，脑瓜不好使了，学过的在这里做个笔记

 1 //获取选中对象

 2

 3 [TransactionAttribute(Autodesk.Revit.Attributes.TransactionMode.Manual)]

 4 public class getSelectEle : IExternalCommand

 5 {

 6

 7     public Result Execute(ExternalCommandData commandData, ref string messages, ElementSet elements)

 8     {

 9           GetSelectionElement(commandData, elements);

10            return Result.Succeeded;

11     }

12

13

14     public void GetSelectionElement(ExternalCommandData   commandData, ElementSet elements)

15     {

16         UIApplication app = commandData.Application;

17         Selection sel = app.ActiveUIDocument.Selection;

18         ElementSet es = sel.Elements;

19         if (es.Size > 0)

20         {

21             string seleStr = "";

22             foreach (Element selitem in es)

23             {

24                 seleStr += selitem.Id + "," + selitem.Name + "\n";

25             }

26             TaskDialog.Show("all Selection", seleStr);

27         }

28

29      }

30 }