42Microsoft Visual Studio 2010: A Beginner’s Guide
which you’ll see many times throughout this book. The Console application defined the skeleton code class to have the name Program. In reality you can name the class anything you want. Whatever names you choose should make sense for the purpose of the class. For example, it makes sense for a class that works with customers to be named Customer and only contain methods that help you work with customers. You wouldn’t add methods for working directly with invoices, products, or anything other than customers because that would make the code in your Customer class confusing. Classes are organized with namespaces, which are discussed next.
The FirstProgram Namespace
A namespace helps make your class names unique and therefore unambiguous. They are like adding a middle name and surname to your first name, which makes your whole name more unique. A namespace name, however, precedes the class name, whereas your middle name and surname follow your first or given name. A namespace also helps you organize code and helps you find things in other programmers’ code. This organization helps to build libraries of code where programmers have a better chance to find what they need. The .NET platform has a huge class library that is organized into namespaces and assemblies; this will become clearer the more you program. The main .NET namespace is System, which has multiple
Another benefit of namespaces is to differentiate between classes that have the same name in different libraries. For example, what if you bought a
The Program class in Listing
namespace FirstProgram
{
// Program class omitted for brevity
}
You can put many classes inside of a namespace, where inside means within the beginning and ending braces for a namespace.
