Ok, let me know if I understand what you are tring to do. You want to create a dropdown that if the user types 'a' the dropdown list will display all items starting with a then if the user types 'b' (the dropdown text would now be 'ab') the list will change to display all data that begins with the letter b.
Is that correct?
If it is correct I must pose the question: Why would you want to do this? From a useability standpoint I would be extremel frustrated if a site employed this kind of functionality in dropdown boxes.
Consider that the list of all items starting with 'a' is 1500 items long and I want to select 'Apple' from the list well, with the proposed functionality, I would type a letter a then have to scroll until I found apple, instead of being able to type 'app' and have a much smaller list returned.
And I just skimmed that aspalliance article but it should be fairly easy to edit that .js
file to only grab that last character of the dropdownlist.
I will only tell you how to do it, not do it for you.
Unless, of course, you want to hire me to do work for you.
Read this if you want to know how to get a correct reply for your question:
^^Took that from planoie's profile^^
^^Modified text taken from gbianchi profile^^