ElementMulticlassFilter Class

A filter used to match elements by their class, where more than one class of element may be passed.

Inheritance Hierarchy

SystemObject
  Autodesk.Revit.DBElementFilter
    Autodesk.Revit.DBElementQuickFilter
      Autodesk.Revit.DBElementMulticlassFilter

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)

Syntax

C++

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public class ElementMulticlassFilter : ElementQuickFilter

Public Class ElementMulticlassFilter
	Inherits ElementQuickFilter

public ref class ElementMulticlassFilter : public ElementQuickFilter

type ElementMulticlassFilter = 
    class
        inherit ElementQuickFilter
    end

The ElementMulticlassFilter type exposes the following members.

Constructors

	Name	Description
	ElementMulticlassFilter(IListType)	Constructs a new instance of a filter to find elements whose Element subclasses matches any of a given set of input classes.
	ElementMulticlassFilter(IListType, Boolean)	Constructs a new instance of a filter to find elements whose Element subclasses matches any of a given set of input classes, with an option to instead match elements whose Element subclass does not match the list of input classes.

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Properties

	Name	Description
	Inverted	True if the results of the filter are inverted; elements that would normally be accepted by this filter will be rejected, and elements that would normally be rejected will be accepted. (Inherited from ElementFilter)
	IsValidObject	Specifies whether the .NET object represents a valid Revit entity. (Inherited from ElementFilter)

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Methods

	Name	Description
	Dispose	(Inherited from ElementFilter)
	Equals	Determines whether the specified object is equal to the current object. (Inherited from Object)
	GetHashCode	Serves as the default hash function. (Inherited from Object)
	GetType	Gets the Type of the current instance. (Inherited from Object)
	PassesFilter(Element)	Applies the filter to a given element. (Inherited from ElementFilter)
	PassesFilter(Document, ElementId)	Applies the filter to a given element. (Inherited from ElementFilter)
	ToString	Returns a string that represents the current object. (Inherited from Object)

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Remarks

This filter is a quick filter. Quick filters operate only on the ElementRecord, a low-memory class which has a limited interface to read element properties. Elements which are rejected by a quick filter will not be expanded in memory.

Only elements whose class is an exact match to one of the input classes, or elements whose type is derived from the input class will pass the collector.

There is a small subset of Element subclasses in the API that are not supported by this filter. These classes exist in the API, but not in Revit's native object model, which means that this filter doesn't support them. In order to use a class filter to find elements of these types, it is necessary to use a higher level class and then process the results further to find elements matching only the subclass. For a list of subclasses affected by this restriction, consult the documentation for [!:Autodesk::Revit::DB::ElementClassFilter].

Reference

Autodesk.Revit.DB Namespace