populate datagrid from listbox value

I have to populate a list box from a db table and when the user clicks on
the value in the listbox I need to then populate a datagrid with detailed
information for the highlighted row.
How can i do that?Try this?
ASP.NET: Master/Detail View using a DropDownList and a DataGrid
[url]http://authors.aspalliance.com/aldotnet/examples/masterdetail_ddl_datagrid.aspx[/u
rl]
"Mike" <me@.me.com> wrote in message
news:ORHOgJWXEHA.2364@.TK2MSFTNGP12.phx.gbl...
>I have to populate a list box from a db table and when the user clicks on
> the value in the listbox I need to then populate a datagrid with detailed
> information for the highlighted row.
> How can i do that?
>