Programming with the Framework Class Library
Because the Framework Class Library contains classes in the true object-oriented spirit of that word, there are two primary ways you will find yourself using these base classes:
Black boxes that you can call into
Classes that you can inherit from and extend to craft your own functionality
Instantiating Objects from the Class Library
The use of base classes as a black box is probably the primary path for most developers. In this mode, your code will be treating the class library as a simple API to get at core functions on your particular operating system.
Using the class library classes in this manner does not represent a departure from the programming model that Visual Basic developers are used to. ...
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