title: list box control in asp.net
body: <p>Hello friends I have a list box control in my asp.net project.
  I want to know how to get selected index to set currently updated item in database.
  Please help  me with this. Do i need to perform some data base operation to find the key for currently updated data and then i'll have to set it or there exist some property to deal with this? thanks in adavance</p>