Namespaces and Classes in .NET
As I mentioned earlier in this book, the .NET Framework is composed of classes—many classes. Namespaces are the method used to create a hierarchical structure for all these classes, and they help prevent naming collisions. A naming collision occurs when two classes have the same name. Because namespaces provide a hierarchy, it's possible to have two classes with the same name as long as they exist in different namespaces. Namespaces, in effect, create a scope for classes.
The base namespace in the .NET Framework is the System namespace. The System namespace contains classes for garbage collection (discussed shortly), exception handling, data typing, and so much more. The System namespace is just the tip of the iceberg. ...
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