If I have an XML structure like this:

<group>
  <items>
    <item />
    <item />
  </items>
</group>
<somethingelse>
  <items>
    <item />
    <item />
  </items>
</somethingelse>

I have loaded the XML doc and created an XmlNodeList like:

XmlNodeList groupNodeList = xml.SelectNodes(//group);

If I then iterate through the groups and attempt to move through the items in that group, I am picking up all items, not just the ones in that group.

foreach (XmlElement groupNode in groupNodeList)
  XmlNodeList = groupNode.SelectNodes(//item);

it works if I do this

  XmlNodeList = groupNode.SelectNodes(//group//items//item);

obviously the groupNode is not what I think it is - what am I doing wrong here?