SelectNodeList Equivalent in c sharp

public boolean setToLastRecord() {

  try {
        NodeList objFieldList;
        objFieldList = XPathAPI.selectNodeList(objRecordNode,"./FIELD");

        if(objFieldList.getLength() > 0 ) {
            objCurrentField = objFieldList.item(objFieldList.getLength() -1);
            return true;
        }
        else
            return false;
    } catch(Exception e) {
        System.out.println("Error in setToLastRecord of RecordObject "  +
                                    e.getMessage());
        return false;
    }

}