元素的移动MoveElement() - EaBIM

[Transaction(TransactionMode.Manual)]
[Regeneration(RegenerationOption.Manual)]
public class cmdMove : IExternalCommand
{
public Result Execute(ExternalCommandData cmdData, ref string messages, ElementSet elements)
{
      UIDocument uiDoc = cmdData.Application.ActiveUIDocument;

      Transaction ts = new Transaction(uiDoc.Document, "revit.5d6d.com");
      ts.Start();
      //这里好像只能选择一个族实例，比如弯头，风管就不行。
      Reference refelem = uiDoc.Selection.PickObject(ObjectType.Element, "选择一个元素");
      Element elem = uiDoc.Document.GetElement(refelem);
      //当前位置
      LocationPoint elemLocation = elem.Location as LocationPoint;//familyInstance.Location;
      XYZ oldPlace = elemLocation.Point;
      //新位置
      XYZ newPlace = new XYZ(10, 20, 30);
      ElementTransformUtils.MoveElement(uiDoc.Document, elem.Id, newPlace);
      //
      elemLocation = elem.Location as LocationPoint;
      XYZ newActual = elemLocation.Point;
      string info = "Original Z location:" + oldPlace.Z
         + "\nNew Z location:" + newActual.Z;
      TaskDialog.Show("revit.5d6d.com", info);

      ts.Commit();

      return Result.Succeeded;
}
}