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Selection.SetElementIds

Description:
Selects the elements.

Remarks:
This function will select the specified elements and update the UI.

public void SetElementIds(
	ICollection<ElementId> elementIds
)

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

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

System.Collections.Generic.ICollection<ElementId>

elementIds

The ids of the elements to be selected.

Autodesk.Revit.Exceptions.ArgumentNullException

A non-optional argument was NULL

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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