Auto complete pulling from data base

Is autocomplete possible for a text box pulling info from DB? I hope I am clear. Is there an example

I have the same question.

The nearest I got to accomplishing this was to have a drop-down list pre-populated, was comlicated to get my head around as a custom enum had to be created, I can see if I still got the code if you are interested as I didnt end up using it in the end.