Namespaces Versus Assemblies

An important distinction we drew in the two previous chapters is that between namespaces and assemblies. One way to approach this is by stating that namespaces provide a means to do logical partitioning of functionality, whereas assemblies are physical containers for types and members. A many-to-many mapping exists between both concepts: A single assembly may contain different namespaces, and a single namespace may be spread across different assemblies.

This configuration can sometimes lead to some confusion where one wonders what happened to his or her favorite type. In such a circumstance, two things should be checked. First of all, a using directive for the namespace containing the type might be missing. This can ...

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