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Filter Multiple Classes

Overview​

A quick filter represented in the API by ElementMultiClassFilter allows searching for elements whose class matches any of those inserted as arguments by means of a set. These data sets must be strongly typed.

Example​

  1. Import the necessary library:

    import System
    from System.Collections.Generic import *

  2. Construct a strongly typed list:

    typeList = List[System.Type]()
    typeList.Add(Floor)
    typeList.Add(Wall)

  3. Create an instance of ElementMulticlassFilter:

    emcf = ElementMulticlassFilter(typeList)

  4. Apply the filter to the collector:

    elems = FilteredElementCollector(doc).WherePasses(emcf).ToElements()

Note​

To define the classes, the RevitAPI library must be imported. Without it, the script will throw an exception indicating that the variables Floor and Wall have not been defined.