Logical And Filter Class

A filter that contains a set of filters. The filter passes when all filters in the set pass.

Inheritance Hierarchy

System Object
Autodesk.Revit.DB ElementFilter
Autodesk.Revit.DB ElementLogicalFilter
Autodesk.Revit.DB LogicalAndFilter

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

Syntax

public class LogicalAndFilter : ElementLogicalFilter

Public Class LogicalAndFilter
	Inherits ElementLogicalFilter

public ref class LogicalAndFilter : public ElementLogicalFilter

type LogicalAndFilter = 
    class
        inherit ElementLogicalFilter
    end

The LogicalAndFilter type exposes the following members.

Constructors

	Name	Description
	LogicalAndFilter(IList ElementFilter )	Constructs a new instance of the logical filter with any number of input filters.
	LogicalAndFilter(ElementFilter, ElementFilter)	Constructs a new instance of the logical filter with two input filters.

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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 )
	GetFilters	Returns an array of copies of the filters that are logically combined by this ElementLogicalFilter. (Inherited from ElementLogicalFilter )
	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 )
	SetFilters	Replaces current filters in the logical filter with any number of input filters. (Inherited from ElementLogicalFilter )
	ToString	Returns a string that represents the current object. (Inherited from Object )

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Remarks

The component filters may be reordered by Revit to cause the quickest acting filters to be evaluated first.

Example

C++

// Find all door instances in the project by finding all elements that both belong to the door 
// category and are family instances.
ElementClassFilter familyInstanceFilter = new ElementClassFilter(typeof(FamilyInstance));

// Create a category filter for Doors
ElementCategoryFilter doorsCategoryfilter = new ElementCategoryFilter(BuiltInCategory.OST_Doors);

// Create a logic And filter for all Door FamilyInstances
LogicalAndFilter doorInstancesFilter = new LogicalAndFilter(familyInstanceFilter, doorsCategoryfilter);

// Apply the filter to the elements in the active document
FilteredElementCollector collector = new FilteredElementCollector(document);
IList<Element> doors = collector.WherePasses(doorInstancesFilter).ToElements();

' Find all door instances in the project by finding all elements that both belong to the door 
' category and are family instances.
Dim familyInstanceFilter As New ElementClassFilter(GetType(FamilyInstance))

' Create a category filter for Doors
Dim doorsCategoryfilter As New ElementCategoryFilter(BuiltInCategory.OST_Doors)

' Create a logic And filter for all Door FamilyInstances
Dim doorInstancesFilter As New LogicalAndFilter(familyInstanceFilter, doorsCategoryfilter)

' Apply the filter to the elements in the active document
Dim collector As New FilteredElementCollector(document)
Dim doors As IList(Of Element) = collector.WherePasses(doorInstancesFilter).ToElements()

Reference

Autodesk.Revit.DB Namespace

LogicalAndFilter Class

Logical And Filter Class

Reference