How to create Iselection filter

[SeanP]

I think this post may help you.

Sort Objects by Selection Order

Hello, an alternative with the ‘ISelectionFilter’ class (interface UI) to avoid a new selection already made import clr clr.AddReference("RevitAPI") import Autodesk from Autodesk.Revit.DB import * clr.AddReference("RevitAPIUI") from Autodesk.Revit.UI import * clr.AddReference("RevitServices") import RevitServices from RevitServices.Persistence import DocumentManager doc = DocumentManager.Instance.CurrentDBDocument uidoc = DocumentManager.Instance.CurrentUIApplication.ActiveUIDocument sel1…