Beginning ASP.NET 3.5 in C# 2008: From Novice to Professional, Second Edition

11.2. The AdRotator

The basic purpose of the AdRotator is to provide a graphic on a page that is chosen randomly from a group of possible images. In other words, every time the page is requested, an image is selected at random and displayed, which is the "rotation" indicated by the name AdRotator. One use of the AdRotator is to show banner-style advertisements on a page, but you can use it any time you want to vary an image randomly.

Using ASP.NET, it wouldn't be too difficult to implement an AdRotator type of design on your own. You could react to the Page.Load event, generate a random number, and then use that number to choose from a list of predetermined image files. You could even store the list in the web.config file so that it can be easily ...