LogicalAndFilter 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: 26.1.0.0 (26.1.0.34)

Syntax

C#

public class LogicalAndFilter : ElementLogicalFilter

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.

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)

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)

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();

VB

' 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()