GeometryObject layer name

[sanjaymann]

Hi,

Using the code:

foreach (GeometryObject geometryObj in dwg.get_Geometry(new Options()))
{

}

I can loop the objects of the linked cad file. My problem is that I want to get the layer name  of the object.

Thanks & Regards

Sanjay Pandey

[jeremytammik]

Dear Sanjay,

Revit does not use layers.

I do not believe that a GeometryObject can be queried for that, or even has such a concept.

You might be able to open the original DWG file using AutoCAD.NET and analyse that instead.

Cheers,

Jeremy

[FAIR59 · Accepted solution]

the information is contained in the GraphicalStyle element:

GraphicsStyle gStyle = document.GetElement(geometryObj.GraphicsStyleId) as GraphicsStyle;

layername: 

gStyle.GraphicsStyleCategory.Name

[sanjaymann]

Hi,

Thanks for the reply.

I too found the layer name the same way as you mentioned but still I will accept your answer as a solution.

Thanks & Regards

Sanjay Pandey

[jeremytammik]

Thanks to Fair59 for the nice succinct answer. Promoted to a blog post:

http://thebuildingcoder.typepad.com/blog/2017/02/revitserverapilib-truss-members-and-layers.html#5

Cheers,

Jeremy

[zrodgersTSSSU]

@sanjaymann I am attempting to do the same thing but gstyle returns null. Any ideas?

Element elem = uidoc.Document.GetElement(elemId);

                    Options opts = app.Create.NewGeometryOptions();
                    GeometryElement geoElem = elem.get_Geometry(opts);

                    foreach(GeometryObject geoObj in geoElem)
                    {
                        GraphicsStyle gStyle = doc.GetElement(geoObj.GraphicsStyleId) as GraphicsStyle;
                        
                        if(gStyle.GraphicsStyleCategory.Name == cadLayer)
                        {
                            GeometryInstance instance = geoObj as GeometryInstance;

                            if (null != instance)
                            {
                                foreach (GeometryObject instObj in instance.SymbolGeometry)
                                {
                                    if (instObj is Curve)
                                    {
                                        ++curveCounter;
                                    }
                                    else if (instObj is PolyLine)
                                    {
                                        ++polylineCounter;
                                    }
                                }
                            }

                        }
                        
                    }