XML node path using ASP.NET 2.0

I’ve created an XMLReader to retrieve the name & value of a node.  I’d
like 
to see the path that I’ve taken to reach a value.

For example, if this is my XML file:
<1>
  <2>
    <3>test</3>
  </2>
</1>

I can cycle thru it & see:
xmlreader.name = 3
xmlreader.value = test

How can I see:   <1><2><3>
xmlreader.??? = <1><2><3>