6.6. Implementing Service Interface in .NET

6.6.1. Context

Your application is deployed on the Microsoft Windows® operating system. You have decided to expose a piece of your application’s functionality as an ASP.NET Web Service. Interoperability is a key issue so you cannot use complex data types that are present only in the Microsoft .NET Framework.

6.6.2. Background

When you insert an audio compact disc (CD) into your computer often the program that you use to play the CD informs you of various pieces of information regarding the recording. This information might include track information, cover art, reviews, and so on. To demonstrate an implementation of the Service Interface pattern, this is implemented as an ASP.NET Web service.