How to create an object using the Singleton pattern in VB.NET
Latest OOP Articles
OP-ED: Do You Hear the Sirens' Song?
Everyone has ideas about how to build software. Explore some common fallacies and collect some hints that may help you along the way. All of the ideas are the opinion of the author (who is sometimes wrong).
Design a Football Engine and Learn How to Apply Design Patterns (Observer, Decorator, Strategy)
Learn how to model a very simple football game engine and identify the design problems in it.
When OOP Becomes POO
Many people who understand OOP well enough to use it are trying to create it too. Paul Kimmel says that's often when OOP becomes POO.
Has Visual Basic Lost Its Way?
Paul Kimmel says the next big paradigm shift in programming will be based on .NET. Find out what he predicts VB's role will be in this coming change, and why he wonders whether Microsoft dropped the ball with VB.NET.
It Is a Matter of State
Learn about the State pattern, which permits an object to change its behavior dynamically by changing its internal state, creating the illusion that the object has changed.
Latest Developer Videos
More...Latest CodeGuru Developer Columns
MFC Integration with the Windows Transactional File System (TxF)
The Transactional File System (TxF), which allows access to an NTFS file system to be conducted in a transacted manner through extensions to the Windows SDK API. MFC 10, has been extended to support TxF and related technologies. This support allows existing MFC applications to be easily extended to support kernel transactions.
.NET Framework: Collections and Generics
The original release of the .NET Framework included collections as .NET was introduced to the Microsoft programming world. The .NET Framework 2.0 introduced generics to complement the System.Collections namespace and provide a more efficient and well performing option. Read on to learn more...

Working with Hashtables in .NET
There are millions of Namespaces in the .NET Framework. Coming from a VB 6 background, I was accustomed to arrays and arrays only. Luckily all has changed with .NET, in that the .NET Framework supports Collections, which as its name implies, is a collection of objects that you can store in a certain manner.
Implementing a WCF Message Contract
WCF implementations normally take two different approaches; a Document style or an API style. Document style implementations are more flexible and often easier to extend and version. Also, Document style or rather, Message Contract service implementations, work well between systems with a shared message assembly. Jeffrey Juday guides you through architecting a WCF Message Contract implementation.