title: how to display items in listbox
body: <p>How to display list of items in list box while choose a particular item in dropdown list.</p>
  
  <p>example: thiru is a developer he done some modules. 
      in dropdown list has a list of developers while choose thiru in this list i want        to display a what are all the modules completed by thiru that can be listed in listbox </p>
  
  <p>I am using Visual Studio 2008,C# with ASP.Net</p>
  
  <p>Thanks </p>