<row>
 <application>
   <row>
    <id></id>
    <value></value>
   </row>
  ...
</application>
</row>
....

XmlNodeList rowCollection = reader.GetElementsByTagName("row");
for (int rowCounter = 0; rowCounter < rowCollection.Count; rowCounter++)
{
...
}

var xml = @"<row><application><row><id></id><value></value></row><row><id></id><value></value></row></application></row>";
XElement doc = XElement.Parse(xml);
IEnumerable<XElement> ls_xpath = doc.XPathSelectElements("./application/row");
ls_xpath.Dump();