Inheritance Keywords
There are a number of keywords associated with inheritance. Remember that by default, all classes you create are inheritable. You inherit from classes using the Inherits keyword. The class from which you inherit is then known as the base class. The Inherits keyword can be used only in classes and interfaces. It is important to point out that a derived class can only inherit from one base class.
Forcing or Preventing Inheritance
The NotInheritable modifier is used to mark a class as not inheritable; in other words, it cannot be used as a base class. If you were to modify the Person class in your InheritanceTest project, it would look like this:
Public NotInheritable Class Person
If you change the Person definition to look ...
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