Chapter 5. Building the Business Logic Layer

If you have class, you’ve got it made. If you don’t have class, no matter what else you have, it won’t make up for it.Ann Landers

If you have classes in your application, you’ve got it made. If you don’t have classes, no matter what else you have, it won’t make up for it. Classes are central to development in .NET.

In fact, it is difficult to build a .NET application without using classes. If you added a form to your project, you have already created a class. A form is just a class that inherits from the .NET Framework System.Windows.Forms.Form class, which gives the class the attributes and behaviors of a form.

In the preceding chapter, you saw how to use classes to build the user interface layer. ...

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