Book excerpt: In this one-of-a-kind book, Microsoft MVP Danijel Arsenovski shows you how to utilize the power of refactoring to improve the design of your existing code and become more efficient and productive. You?ll discover how to perform unit testing, refactoring to patterns, and refactoring to upgrade legacy Visual Basic code. As you progress through the chapters, you?ll build a prototype application from scratch as Arsenovski walks you step-by-step through each process while offering expert coding tips.