Looking for a Sample of a "Related Questions" List like on StackOverflow

Question

Many websites have a feature that suggests items based upon what you're currently typing. For example, here on Stack Overflow you are suggested similar questions as you type a question title. How can I do something similar to this?

Answer 1

I guess it could be done in asp.net by adding an updatePanel which is triggered to update as the Title-TextBox lose it's focus(or by KeyDown event, look into jQuery, there are some sweet plugins for this exact thing). From there on, you simply create a top 10 from your database based on the entered title.

If you don't have an idea to do this yourself, you have a lot to look into before trying to create such system.