[This documentation is for preview only, and is subject to change in later releases. Blank topics are included as placeholders.]

 Classes

	Class	Description
	AttributedModelServices	Contains helper methods for using the attributed programming model with composition.
	ChangeRejectedException	An exception that indicates whether a component has been rejected during composition.
	CompositionContractMismatchException	The exception that is thrown when the underlying exported object or metadata of an Export or Export object cannot be cast to T or TMetadataView, respectively.
	CompositionError	Represents an error that occurs during composition in a CompositionContainer object.
	CompositionException	Represents the exception that is thrown when one or more errors occur during composition in a CompositionContainer object.
	ExportAttribute	Specifies that a type, property, field, or method provides a particular export.
	ExportMetadataAttribute	Specifies metadata for a type, property, field, or method marked with the ExportAttribute.
	ImportAttribute	Specifies that a property, field, or parameter imports a particular export.
	ImportCardinalityMismatchException	The exception that is thrown when the cardinality of an ImportDefinition object does not match the cardinality of the Export objects available that are in an ExportProvider object.
	ImportingConstructorAttribute	Specifies that a particular constructor should be used when constructing an attributed part.
	ImportManyAttribute	Specifies that a property, field, or parameter imports a particular set of exports.
	InheritedExportAttribute	Specifies that a type provides a particular export, and that subclasses of that type will also provide that export.
	MetadataAttributeAttribute	Specifies that an attribute can be used to provide metadata for a type, property, field, or method marked with the ExportAttribute.
	PartCreationPolicyAttribute	Specifies the CreationPolicy for a given ComposablePart.
	PartMetadataAttribute	Specifies metadata for a type to be used as a ComposablePartDefinition and ComposablePart.
	PartNotDiscoverableAttribute	Marks a type that will not be discovered as a ComposablePart in a ComposablePartCatalog.

 Interfaces

	Interface	Description
	ICompositionService	Provides methods for composing ComposablePart objects in a CompositionContainer object.
	IPartImportsSatisfiedNotification	Enables implementers to be notified when a part's imports have been satisfied.

 Enumerations

	Enumeration	Description
	CreationPolicy	Specifies options added to a ComposablePart object that control when the CompositionContainer object creates a new instance of that part.