8. Files

Consciousness ... does not appear to itself chopped up in bits. ... A “river” or a “stream” are the metaphors by which it is most naturally described.

—William James

I can only assume that a “Do Not File” document is filed in a “Do Not File” file.

—Senator Frank Church, Senate Intelligence Subcommittee Hearing, 1975


In this chapter you’ll learn:

• To use file processing to implement a business app.

• To create, write to and read from files.

• To become familiar with sequential-access file processing.

• To use classes StreamWriter and StreamReader to write text to and read text from files.

• To organize GUI commands in menus.

• To manage resources with Using statements and the Finally block of a Try statement.


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