using reference Can't get edge of Cable Tray

[NGM_AiYo]

I want to select an edge on cable tray. But the reference I got from the Selection.PickObject() can't get anything.

But it works on Pipe.

Reference pickObj = sel.PickObject(ObjectType.Edge);
                    Log.Info("side align " + AlignSide.Id + "  " + AlignSide.UniqueId);
                    
                    try
                    {
                        
                        GeometryObject go = AlignSide.GetGeometryObjectFromReference(pickObj) as GeometryObject;
                        if ( go is null)
                        {
                            Log.Info("geometry is null");
                            Options options = new Options();
                            options.ComputeReferences = true;
                            options.DetailLevel = ViewDetailLevel.Fine;
                            GeometryElement ge = AlignSide.get_Geometry(options);
                            foreach (GeometryObject item in ge)
                            {
                                if (item is Solid solid)
                                {
                                    foreach(Edge edg in solid.Edges)
                                    {
                                        Log.Info(edg.Reference.ConvertToStableRepresentation(doc));
                                    }
                                }
                            }

                        }
                        Edge edge = go as Edge;
                        Log.Info( "picked reference: " + pickObj.ConvertToStableRepresentation(doc));
                        if (edge == null)
                        {
                            Log.Info("edge is null");
                        }
                        Element element = doc.GetElement(pickObj.ElementId);
                        Line sideLine;
                        sideLine = edge.AsCurve() as Line;
                       
                    }
                    catch (Exception ex)
                    {
                        
                    }

 I print  all the references of cable Tray. and last reference is from pickObject().

16cc5331-08cb-404f-bc36-bec6c55aac53-004c8655:4:LINEAR
 16cc5331-08cb-404f-bc36-bec6c55aac53-004c8655:7:LINEAR
16cc5331-08cb-404f-bc36-bec6c55aac53-004c8655:11:LINEAR
 16cc5331-08cb-404f-bc36-bec6c55aac53-004c8655:15:LINEAR
16cc5331-08cb-404f-bc36-bec6c55aac53-004c8655:16:LINEAR
 16cc5331-08cb-404f-bc36-bec6c55aac53-004c8655:12:LINEAR
16cc5331-08cb-404f-bc36-bec6c55aac53-004c8655:8:LINEAR
16cc5331-08cb-404f-bc36-bec6c55aac53-004c8655:5:LINEAR
 16cc5331-08cb-404f-bc36-bec6c55aac53-004c8655:18:LINEAR
16cc5331-08cb-404f-bc36-bec6c55aac53-004c8655:9:LINEAR
16cc5331-08cb-404f-bc36-bec6c55aac53-004c8655:13:LINEAR
 16cc5331-08cb-404f-bc36-bec6c55aac53-004c8655:17:LINEAR
picked reference: 16cc5331-08cb-404f-bc36-bec6c55aac53-004c8655:3022:LINEAR

Is there any way to get edge of cable tray from PickObject(). 

My revit version is 2019.

[RPTHOMAS108 · Accepted solution]

If you switch to coarse detail level you can select such edges. Otherwise you can select a point on a face then find the distance of that point to each curve in order to select the edge.

Not sure why you can't get the reference in fine detail view.