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Visual Studio Next Generation: Language Enhancements

By Microsoft, published on 14 Jul 2001
Microsoft
Page 4 of 15
  1. Introduction
  2. New Features
  3. Object Orientated Programming
  4. Inheritance
  5. Encapsulation
  6. Overloading
  7. Polymorphism
  8. Parameterized Constructors
  9. Additional Features
  10. Free Threading
  11. Structured Exception Handling
  12. Type Safety
  13. Shared Members
  14. Initializers
  15. Conclusion

Inheritance

Consistently the number one most requested feature for Visual Basic is support for implementation inheritance. Developing in Internet time requires rapid assembly and massive reuse. To facilitate implementation inheritance, Visual Basic will add the Inherits keyword to the language.

Developers can use the new keyword Inherits or the class property sheet's Inherits property to derive from an existing class.

Class1
    Function GetCustomer()
      ...
    End Function
Class2
    Inherits Class1
    Function GetOrders()
      ...
    End Function

The Inherits statement supports all the usual properties associated with inheritance.

  • Instances of the derived class support all methods and interfaces supported by the base class
  • The derived class can override methods defined in the base class using the Overrides keyword
  • The derived class can extend the set of methods and interfaces supported by the base class

Related tags

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Comments

  1. ghanshyam
    12 Nov 2002 at 17:10

    The Object Oriented feature like Inheritance,Polymorphism,Encapsulation in Visual Basic is really a great achievement.Offcourse making a VB program as Multithreaded and allowing STructured exception handling is other great achievements.


    But I beleive there is a potential drawback associated with VB.That is its languag construct.SImultaneously there should be effort in improving the Construct/Style of VB language.
    Otherwise there will be a learning curve for any object oriented C++/Java developer to use VB.
    It cannot be called as a ObjectOriented language unless the Construct of the language is similar to any of the ObjectOrieneted Language.


    Ghanshyam.

  2. Michael Honohan
    01 Aug 2002 at 21:18

    I am not sure if you have your whole VB history down. I learned VB from a Version 2.0 Demo. Also, did you also know there was Visual Basic for DOS?

  3. Developer Fusion Bot
    01 Jan 1999 at 00:00

    This thread is for discussions of Visual Studio Next Generation: Language Enhancements.

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