How do I... Determine the distance between ZIP codes using C#?

Calculating the distance between ZIP codes has become a common feature in search engines. For instance, if you're searching for restaurants, a Web site will often allow you to enter a ZIP code and display all restaurants within x miles of that ZIP code. Zach Smith shows you how to implement a ZIP code distance calculator in C#.

This download is also available as an entry in the TechRepublic Programming and Development blog.