A Thumbnail Sketch of OOP

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ADO.NET Programming in Visual Basic .NET
By Steve  Holzner, Bob  Howell

Table of Contents
Chapter 2.   Object-Oriented Programming in Visual Basic .NET

Until this version, VB was not object oriented in a strictly academic sense. While it is true that VB 6 uses objects and can create classes, they are not true classes in the OOP paradigm. They are really COM objects, and there's an important difference. For a language to be truly object oriented, it must support the following capabilities:

  • Encapsulation Data in a class must be able to be fully hidden from the rest of the program. The language must provide a mechanism for controlling this access. Moreover, the class must be self-sufficient, with no external dependencies other than its immediate parent.

  • Inheritance Classes derived from other classes must have a mechanism for inheriting the functionality and data of the parent class.

  • Polymorphism Literally many forms, it means that methods can have many signatures and the compiler determines which member to call based on the parameters given.

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ADO. NET Programming in Visual Basic. NET
ADO.NET Programming in Visual Basic .NET (2nd Edition)
ISBN: 0131018817
EAN: 2147483647
Year: 2005
Pages: 123

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