topic Re: GeometryObject layer name in Revit API Forum

GeometryObject layer name

Anonymous — Fri, 27 Jan 2017 09:29:58 GMT

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

Re: GeometryObject layer name

jeremytammik — Fri, 27 Jan 2017 10:33:44 GMT

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

Re: GeometryObject layer name

FAIR59 — Sat, 28 Jan 2017 23:30:32 GMT

the information is contained in the GraphicalStyle element:

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

layername:

gStyle.GraphicsStyleCategory.Name

Re: GeometryObject layer name

Anonymous — Mon, 30 Jan 2017 05:59:45 GMT

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

Re: GeometryObject layer name

jeremytammik — Thu, 02 Feb 2017 10:27:22 GMT

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

Re: GeometryObject layer name

zrodgersTSSSU — Mon, 19 Jul 2021 19:48:26 GMT

@Anonymous 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; } } } } }