WebClasses are the major components of an IIS application. Each WebClass in
the IIS application project has its own designer in the VB IDE. A WebClass corresponds
to a single Web page that your application will provide to browsers.
When you begin a new IIS application, VB automatically inserts a designer for
the first WebClass object (WebClass1). You can add designers for more WebClass
objects to the IIS project by choosing Project, Add WebClass from the VB menu.
Note that when you save your IIS projects, each WebClass gets saved in its own
designer file (extension .DSR).
As mentioned in the preceding section, there are two ways that you can furnish
Web page output to client browsers from a WebClass: