M

Selection.SetElementIds

Description:
Selects the elements.

Remarks:
This function will select the specified elements within the project and update the UI. See SetReferences for more selection options.

public void SetElementIds(
	ICollection<ElementId> elementIds
)

Public Sub SetElementIds ( 
	elementIds As ICollection(Of ElementId)
)

public:
void SetElementIds(
	ICollection<ElementId^>^ elementIds
)

member SetElementIds : 
        elementIds : ICollection<ElementId> -> unit

ICollection<ElementId>

elementIds

The ids of the elements to be selected.

ArgumentNullException

A non-optional argument was null
InvalidOperationException

Changing the selection is not permitted while handling SelectionChanged Event.

Jul 8, 2026

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# -*- coding: utf-8 -*-

#⬇️ IMPORTS
#░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░
from Autodesk.Revit.DB import *
from Autodesk.Revit.UI.Selection import ISelectionFilter, Selection, ObjectType

#📦 VARIABLES
#░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░
doc       = __revit__.ActiveUIDocument.Document #type:Document
uidoc     = __revit__.ActiveUIDocument          

# Class for selection methods...
selection = uidoc.Selection                     #type: Selection

EF-Selection Basics

Learn and copy most used selection code snippets for prompting user selection.

@erik_frits

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Selection.SetElementIds

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