How to get a Dynamo Category from a DB Category?

Developers
1

Im learning more about how to use python. I have this issue, what method would I use to get the Revit.Elements.Category from a Revit.DB.BuiltInCategory? I have tried looking at some nodes- whenever I try to get the Id from the DB.Category, it throws errors. Thanks in advance!

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import clr

import sys
sys.path.append('C:\Program Files (x86)\IronPython 2.7\Lib')

import System
from System import Array
from System.Collections.Generic import *

clr.AddReference('ProtoGeometry')
from Autodesk.DesignScript.Geometry import *

clr.AddReference("RevitNodes")
import Revit
clr.ImportExtensions(Revit.Elements)
clr.ImportExtensions(Revit.GeometryConversion)

clr.AddReference("RevitServices")
import RevitServices
from RevitServices.Persistence import DocumentManager 
from RevitServices.Transactions import TransactionManager 

clr.AddReference("RevitAPI")
clr.AddReference("RevitAPIUI")

import Autodesk 
from Autodesk.Revit.DB import *
from Autodesk.Revit.UI import *

# Current doc/app/ui

doc = DocumentManager.Instance.CurrentDBDocument
uiapp = DocumentManager.Instance.CurrentUIApplication
app = uiapp.Application
uidoc = uiapp.ActiveUIDocument

#CODE___________________________________________________
OUT = BuiltInCategory.OST_Walls
2

Try type conversion by name

# Category name from Revit BuiltInCategory
revitcatname = Category.GetCategory(doc, BuiltInCategory.OST_Walls).Name

# Dynamo type
dynamocategory = Revit.Elements.Category.ByName(revitcatname)
1 Like
3

Yes that works! And I consequently learned I could just use the string in most scenarios, thanks! I ended up collapsing it down into one statement just for practice-

OUT = Revit.Elements.Category.ByName(Category.GetCategory(doc, BuiltInCategory.OST_Walls).Name)