Re: Retrieving useable line style

Hi,

After playing a bit with RevitLookup, I've found that you need to check the ParentCategory of the GraphicStyle. In you case it should be Lines.

Try the following code. I didn't check it myself, but should work:

            var styles = 
                new FilteredElementCollector(doc)
                .OfClass(typeof(GraphicsStyle))
                .WhereElementIsNotElementType()
                .ToElements()
                .Where(e=>e.Category!=null && e.Category.Parent!=null && e.Category.Parent.Id == new ElementId(BuiltInCategory.OST_Lines));

Thanks,

Victor.