Please anybody help to create autocomplete dropdown box with editable in asp.net

[Rocksoft]

could anybody help to create autocomplete dropdown box with editable, whatever we typing in dropdown box it should show dropdown of the control, in my project i filled the dropdown box by store number from mysql database, For Eg., if i will type "43" it should show all stores starts with "43", suppose if i will type "26" it should show all stores starts with "26".please give some idea to get logic with any sample code.

Please anybody to help me out from this problem

[showtime]

http://www.codeproject.com/aspnet/AJAXWasHere-Part3.asp

Use AJAX. Here is a textbox example...try it out, see if you can mold it to your needs.