ListView Hierarchical data - ASP.Net

Question

Hi All, I'm working on an asp.net application where I need to display records in the form of a ListBox in hierarchical format (parent-child records). I managed to do that using ASP.Net 3.5 ListView Control, but I couldn't get the functionalities of the ListBox control like selecting multiple items. Can somebody guide me on how to do that using ListView control or is there a better way to display data in a hierarchical manner. We don't like to use any kind of Tree control. Thanks.