ASP.NET by Example

Component-Based Features

Until this point we've focused on programs and even program fragments in introducing the concepts of the language. However, VB.NET has several features that enable building component-based applications.

Namespaces and Assemblies

Namespaces provide a logical organizational system both internally within the program and externally to other programs. Consider the following example:

Namespace Que.ByExample
    Class Book
     ...
    End Class
End Namespace

Because namespaces may be nested, the preceding example is functionally equivalent to the following:

Namespace Que
    Namespace ByExample
        Class Book
        ...
        End Class
    End Namespace
End Namespace

In either case, we can reference the Book class via its fully qualified namespace:

 Que.ByExample.Book ...