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

 Classes

	Class	Description
	AggregateCatalog	A catalog that contains a mutable collection of ComposablePartCatalog objects.
	AggregateExportProvider	Aggregates the exports provided by a collection of ExportProvider objects.
	AssemblyCatalog	An immutable ComposablePartCatalog object created from a managed code assembly.
	AtomicComposition	Represents a single composition operation for transactional composition.
	CatalogExportProvider	Provides access to all the Export objects declared by a given catalog.
	ComposablePartCatalogChangeEventArgs	Provides data for the Changed event.
	ComposablePartExportProvider	Provides access to the Export objects provided by a ComposablePart.
	CompositionBatch	Represents a set of ComposablePart objects to add or remove from a container.
	CompositionConstants	Contains static metadata keys used by the composition system.
	CompositionContainer	Serves as a repository for ComposablePart objects and provides methods for composition.
	DirectoryCatalog	A ComposablePartCatalog object that represents the contents of a directory.
	ExportProvider	Defines the abstract base class for export providers, which provides methods for retrieving Export objects.
	ExportsChangeEventArgs	Provides data for the ExportsChanging and ExportsChanged event.
	ImportEngine	Provides methods to perform composition on a specific part or parts.
	TypeCatalog	An immutable ComposablePartCatalog object that is created from a type array or a list of managed types.

 Interfaces

	Interface	Description
	INotifyComposablePartCatalogChanged	Provides notifications when a ComposablePartCatalog changes.