topic Re: Cannot find Name of ColorFillSchemeEntry by API in Revit API Forum

Cannot find Name of ColorFillSchemeEntry by API

supportT7RUE — Wed, 14 Apr 2021 20:39:28 GMT

I'm looking into API to retrieve Color for given Area Type.

Quick search:

var schemes = new Autodesk.Revit.DB.FilteredElementCollector(doc)
    .OfCategory(Autodesk.Revit.DB.BuiltInCategory.OST_ColorFillSchema)
    .Select(s => s as ColorFillScheme);

var rentable = schemes
    .Where(s => s.Name == "Rentable Area")
    .FirstOrDefault();

List<ColorFillSchemeEntry> entries = rentable.GetEntries();

If I look on fields of each entry, I can find proper color, but not the name of given Area Type or any index. Entry.Caption or entry.GetStringValue() return empty string.

On GUI I clearly can see which color applies to which type, how can I find this relation by API?

Re: Cannot find Name of ColorFillSchemeEntry by API

Sean_Page — Wed, 14 Apr 2021 21:02:55 GMT

It looks like you just need to use .GetStringValue() method.

--Revit Lookup is invaluable--

Re: Cannot find Name of ColorFillSchemeEntry by API

Sean_Page — Wed, 14 Apr 2021 21:11:12 GMT

This was quick in Dynamo via Python, but it worked fine.

Make sure you are getting a specific entry to use the method on and not the list.

string name = entires[0].GetStringValue()

Re: Cannot find Name of ColorFillSchemeEntry by API

mut9lu — Wed, 14 Apr 2021 21:24:29 GMT

GetStringValue() works for entries of Rooms color scheme, but not for Areas. Elements inside GetEntries() have empty values under GetStringValue(). That was first what I've tried (second after entry.Caption).

Re: Cannot find Name of ColorFillSchemeEntry by API

Sean_Page — Wed, 14 Apr 2021 21:28:49 GMT

What if you use the ElementId value there to get the element?

Re: Cannot find Name of ColorFillSchemeEntry by API

mut9lu — Wed, 14 Apr 2021 21:36:36 GMT

Ahhh, it was not element itself, but its GetDependentElements()

Thanks for pointing out RevitLookUp, I heard of it but didn't use previously.

Re: Cannot find Name of ColorFillSchemeEntry by API

architect.bim — Wed, 14 Apr 2021 21:49:16 GMT

One of the solutions could be getting all unique area types as parameter values of area objects. You can make a dictionary and use it to get proper area type names and colors:

# Python area_types = {} for area in FEC(doc).OfCategory(DB.BuiltInCategory.OST_Areas): area_type_parameter = area.get_Parameter(DB.BuiltInParameter.AREA_TYPE) area_type_id = area_type_parameter.AsElementId() area_type_name = area_type_parameter.AsValueString() if area_type_id not in area_types: area_types[area_type_id] = area_type_name for scheme in FEC(doc).OfCategory(DB.BuiltInCategory.OST_ColorFillSchema): if scheme.Name == 'Rentable Area': scheme_entries = scheme.GetEntries() entry_colors = {} for entry in scheme_entries: entry_name = area_types[entry.GetElementIdValue()] if entry_name not in entry_colors: entry_colors[entry_name] = entry.Color

Re: Cannot find Name of ColorFillSchemeEntry by API

architect.bim — Wed, 14 Apr 2021 21:56:32 GMT

Is RevitLookup 2022 already available?

Re: Cannot find Name of ColorFillSchemeEntry by API

Sean_Page — Wed, 14 Apr 2021 22:01:10 GMT

Officially no, but since R22 has the same .Net version I assumed it would work and manually copied it to the add-ins folder. Works perfect.

Re: Cannot find Name of ColorFillSchemeEntry by API

architect.bim — Wed, 14 Apr 2021 22:30:42 GMT

Very nice! I'll check it up 😃