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Programming with .NET

Assemblies

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Introducing .NET Assemblies

E

ach of the applications developed in this book’s first fourteen chapters were along the lines of

traditional “stand-alone” applications, given that all of your custom programming logic was con-

tained within a single executable file (*.exe). However, one major aspect of the .NET platform is the

notion of binary reuse, where applications make use of the types contained within various external

assemblies (aka code libraries). The point of this chapter is to examine the core details of creating,

deploying, and configuring .NET assemblies.

In this chapter, you’ll first learn the construction of .NET namespaces followed by the distinc-

tion between single-file and multifile assemblies, as well as “private” and “shared” assemblies. Next,

you’ll examine exactly how the .NET runtime resolves the location of an assembly and come to

understand the role of the global assembly cache (GAC), application configuration files (*.config

files), publisher policy assemblies, and the role of the System.Configuration namespace.