xml based Navigation

I have a following xml -

   <Menu>
     <submenu1>
      <subsubmenu1>
         <subsubsubmenu1>
           <item> Name </item>
           <itemvalue> Value </itemvalue>
         </subsubsubmenu1>
       </subsubmenu1>
     </submenu1>
     <submenu2>
      <subsubmenu2>
         <subsubsubmenu2_0>
           <item> Name </item>
           <itemvalue> Value </itemvalue>
         </subsubsubmenu2_0>
         <subsubsubmenu2_1>
           <item> Name </item>
           <itemvalue> Value </itemvalue>
         </subsubsubmenu2_1>
       </subsubmenu2>
     </submenu2>
   </Menu>

On button click, I want to display on label first 'Menu' , on clicking again 'Submenu' , on clicking again 'Subsubmenu' and so on. What data structure / collection can be used? How can it be achieved?