Cannot find Name of ColorFillSchemeEntry by API

[supportT7RUE]

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?

[Sean_Page]

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

--Revit Lookup is invaluable--

[Sean_Page]

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()

[mut9lu]

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).

[Sean_Page]

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

[mut9lu]

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

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

[architect.bim · Accepted solution]

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

[architect.bim]

Is RevitLookup 2022 already available?

[Sean_Page]

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.

[architect.bim]

Very nice! I'll check it up 😃