Python code for selection

Developers
1

i was trying to get the element ID of the selected elements. but when write the code below code is not working. which library I supposed to import to work it properly.

uidoc = commandData.Application.ActiveUIDocument

2 
import clr
clr.AddReference('RevitServices')
from RevitServices.Persistence import DocumentManager

doc = DocumentManager.Instance.CurrentDBDocument
uidoc = DocumentManager.Instance.CurrentUIApplication.ActiveUIDocument

Will get you the active document. You’ll need to supply more details about what you’re trying to achieve for the rest

3

thank you, is there any document for the library

4

The UIDocument has a Selection property. Referencing the Selection class, you can use the GetElementIds method to get the element ids of the current selection.

5

I created below code to pick the object from screen. but it is not working.
import clr
clr.AddReference(‘ProtoGeometry’)
clr.AddReference(‘RevitServices’)
from Autodesk.DesignScript.Geometry import *
from RevitServices.Persistence import DocumentManager
from RevitServices.Persistence import *
doc = DocumentManager.Instance.CurrentDBDocument

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

clr.AddReference(‘RevitNodes’)
import Revit
clr.ImportExtensions(Revit.Elements)

clr.AddReference(‘RevitAPI’)

from Autodesk.Revit.DB import *
from Autodesk.Revit.DB import APIObject
from Autodesk.Revit.DB.Mechanical import *
clr.AddReference(“RevitAPIUI”)
from Autodesk.Revit.UI import *
import Autodesk
ref = Autodesk.Revit.DB.Reference
sel = uidoc.Selection
po = sel.PickObject
po1 = po.Targets
#selid = sel.GetElementIds().Count
selob = sel.PickObject(ObjectType.Element)

OUT = selob

6

Once you have the uidoc, you can get the ids of the elements as @cgartland says, and from there the elements themselves by querying the doc:

ids = uidoc.Selection.GetElementIds()
elems = []
for id in ids:
	try:
		elems.append(doc.GetElement(id))
	except:
		elems.append('Element retrieval failed')

OUT = elems

revitapidocs: Selection.GetElementIds
revitapidocs: Document.GetElement

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