Nested XML Parsing using c#

Cracking my head to parse out this nested xml, im using the XmlNodeList lists = doc.SelectNodes method, problem is it cannot go to the next DRSites node.

<FileInfo>
  <DRSites>
    <ASite>X3Os</ASite>
    <SSite>SS</SSite>
    <tots>
      <tot>
        <totno>abx12</totno>
      </tot>
      <tot>
        <totno>cde</totno>
      </tot>
    </tots>
  </DRSites>
  <DRSites>
      <ASite>xya</ASite>
      <SSite>mne</SSite>
      <tots>
        <tot>
          <totno>ew34</totno>
        </tot>
        <tot>
          <totno>fdf5435</totno>
        </tot>
      </tots>
    </DRSites>
</FileInfo>