Chapter 16 Working with VB .NET

Delegate

You can design the following types of VB .NET delegates:

• To create a delegate at the namespace level, create a class with the <<Delegate>> stereotype, and add an operation with the <<Delegate>> stereotype to this class and define a visibility for this operation. This visibility becomes the visibility of the delegate
  

...
Public Delegate Function ActionOccurred () As Object
...

• To create a delegate in a class, module, or structure, you just have to create an operation with the <<Delegate>> stereotype. In the following example, class Worker is inner to module Utilities. Both contain internal delegates designed as operations with the <<Delegate>> stereotype
  

...
Public Module Utilities
   Public Delegate Function NewWorker () As Object
   Public Class Worker
      Public Delegate Function WorkStarted () As Object
   End Class
End Module
...

Copyright (C) 2007. Sybase Inc. All rights reserved.