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C# Primer: A Practical Approach by Stanley B. Lippman

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Chapter 5. Exploring the System Namespace

The System namespace provides at least three distinct levels of support for the C#/.NET programmer.

  1. At the most basic level it provides the underlying implementation of all the fundamental types, including the numeric types, string, enum, delegate, and array.

  2. At a second level it serves as a system class library, providing support for input/output, collection classes, exceptions, regular expressions, sockets, threads, Web requests, and so on.

  3. At a third level it provides a framework for complex application domains, such as Windows Forms (Chapter 6), Web Forms (Chapter 7), eXtensible Markup Language (XML), and the tabular display of data, often retrieved from a database.

This chapter provides a tour of many ...

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