DirectoryCatalog
DirectoryCatalog is a component of the Managed Extensibility Framework (MEF) used to discover and expose exports from assemblies located in a specified directory. It serves as a catalog that aggregates parts (types or members) found in multiple assemblies so that a composition container can compose imports and exports at runtime. DirectoryCatalog is commonly used to implement plugin or extension scenarios where new functionality is added by dropping assemblies into a folder.
How it works: DirectoryCatalog is configured with a path to a directory and, optionally, a search pattern
Usage considerations: DirectoryCatalog is often combined with other catalogs through an AggregateCatalog to form a unified
Limitations and maintenance: DirectoryCatalog reflects the contents of the directory at the time of catalog creation.