How to make a "datasourceable" list with clickable links (to do client-side actions)?

Question

Hey guys, i'm not sure if was able to explain the at the title, but here's what I need:

I'm making a kind of dropdown menu, and I need to make a List, getting via datasource (function already there) the names of all cities from my database, then when the user clicks the name of a city, this name goes right to a textbox.

I'm not very familiar with jQuery, but I'll accept solutions using it.

Answer 1

on the dropdown control: OnClientClick="fillTextBox()"

function fillTextBox() {
   var dropdownId = '#<%=DropDown1.ClientID%>';
   $("#mytextbox").val($(dropdownId + " option:selected").text());
}

this gets the actual city name, the value is a simple val() instead of text()