The System Namespace
The System namespace sits at the top of the namespace hierarchy. All the rest of the libraries in this chapter—and in this book—will be descended from the System namespace. (The .NET Framework does include some namespaces that aren't part of the System namespace, but we won't be discussing them in this book.) The most important items contained within the System namespace are the classes that represent the base data types, such as Object, Integer, Long, String, and so on.
In addition to these base data types, there are dozens of classes in the System namespace. These classes cover areas such as data handling (DataSet), garbage collection (GC), and threading (Threading).
The System namespace also contains namespaces that provide ...