FCL

Webopedia Staff
Last Updated May 24, 2021 7:42 am

Short for framework class library, the collective name for the thousands of classes that compose the .NET Framework. The services provided by the FCL include runtime core functionality (basic types and collections, file and network I/O, accessing system services, etc.), interaction with databases, consuming and producing XML, and support for building Web-based and desktop-based client applications, and SOAP-based XML Web services.