System.ComponentModel.Composition Namespace
This namespace provides classes that constitute the core of the Managed Extensibility Framework, or MEF.
| Class | Description | |
|---|---|---|
 | AttributedModelServices | Contains helper methods for using the MEF attributed programming model with composition. |
| CatalogReflectionContextAttribute | When applied to a Assembly object, enables an AssemblyCatalog object to discover custom ReflectionContext objects. |
| ChangeRejectedException | An exception that indicates whether a part has been rejected during composition. |
| CompositionContractMismatchException | The exception that is thrown when the underlying exported value or metadata of a Lazy<T> or Lazy<T, TMetadata> object cannot be cast to T or TMetadataView, respectively. |
| CompositionError | Represents an error that occurred during composition. |
| 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. |
| ExportFactory<T> | A factory that creates new instances of a part that provides the specified export. |
| ExportFactory<T, TMetadata> | A factory that creates new instances of a part that provides the specified export, with attached metadata. |
| ExportLifetimeContext<T> | Holds an exported value created by an ExportFactory<T> object and a reference to a method to release that object. |
| ExportMetadataAttribute | Specifies metadata for a type, property, field, or method marked with the ExportAttribute. |
| ImportAttribute | Specifies that a property, field, or parameter value should be provided by the CompositionContainer.object |
| ImportCardinalityMismatchException | The exception that is thrown when the cardinality of an import is not compatible with the cardinality of the matching exports. |
| ImportingConstructorAttribute | Specifies which constructor should be used when creating a part. |
| ImportManyAttribute | Specifies that a property, field, or parameter should be populated with all matching exports by the CompositionContainer object. |
| InheritedExportAttribute | Specifies that a type provides a particular export, and that subclasses of that type will also provide that export. |
| MetadataAttributeAttribute | Specifies that a custom attribute’s properties provide metadata for exports applied to the same type, property, field, or method. |
| MetadataViewImplementationAttribute | Specifies the type used to implement a metadata view. |
| PartCreationPolicyAttribute | Specifies the CreationPolicy for a part. |
| PartMetadataAttribute | Specifies metadata for a part. |
| PartNotDiscoverableAttribute | Specifies that this type’s exports won’t be included in a ComposablePartCatalog. |
| Interface | Description | |
|---|---|---|
 | ICompositionService | Provides methods to satisfy imports on an existing part instance. |
| IPartImportsSatisfiedNotification | Notifies a part when its imports have been satisfied. |
| Enumeration | Description | |
|---|---|---|
 | CreationPolicy | Specifies when and how a part will be instantiated. |
| ImportSource | Specifies values that indicate how the MEF composition engine searches for imports. |