此论坛已关闭。感谢你的参与。
可以借鉴如下
http://www.dotnetspeaks.com/DisplayArticle.aspx?ID=184
http://code.msdn.microsoft.com/wpapps/Listbox-with-Expander-View-13ee2bbe
http://techblog.ginktage.com/2011/07/how-to-display-start-menu-items-in-expanded-view-in-windows-7/