Retrieving useable line style

[Anonymous]

I was trying to retrieve useable line style(shown in combobox when we draw model or detail line) as typed below

FilteredElementCollector collector = new FilteredElementCollector(doc).OfClass(typeof(GraphicsStyle)).WhereElementIsNotElementType();

this code return so many graphicsstyle element.

i want to filter useable line style when draw line.

[Anonymous]

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.

[Anonymous]

i was trying to your code. but return 0 result.

i changed code.

Category => GraphicsStyleCategory 

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

this code is working. but this result is not what is expected.

[Anonymous · Accepted solution]

sovled.

i refered to link (http://adndevblog.typepad.com/aec/2015/03/revitapi-how-to-get-line-style-names-only-for-creating-det...) and (http://thebuildingcoder.typepad.com/blog/2008/11/model-line-creation.html)

i used method GetLineStyleIds();

[Anonymous]

That's wierd, I just executed your code and it shows me exactly what you need.
I tried in Revit 2016.

Anyway, i glad you've found the solution.