xml查询的问题 谢谢了

[IPvECMS]

  <round>
    <roundNo>200812187159</roundNo>
    <big>XXXX</big>
    <two>XXX</two>
    <hu>XXX</hu>
    <sum>748</sum>
  </round>
  <round>
    <roundNo>200812187160</roundNo>
    <big>XXX</big>
    <two>XXX</two>
    <hu>XXX</hu>
    <sum>970</sum>
  </round>
  <round>
    <roundNo>200812187161</roundNo>
    <big>
    </big>
    <two>
    </two>
    <hu>
    </hu>
    <sum>
    </sum>
  </round>

怎么查询到红色标记的这一条 round 记录...
然后更新后面的 big two hu sum

[flyjimi]

结贴后会退还50%的帖子分数。

XmlDocument doc = new XmlDocument();
            doc.Load("test6.xml");
            XmlNode root = doc.DocumentElement;
            XmlNodeList nodes = root.SelectNodes("round/roundNo");
            XmlNode node = null;
            foreach (XmlNode n in nodes)
            {
                if (n.InnerText.Equals("200812187161"))
                {
                    node = n;
                    break;
                }
            }
            if (node != null)
            {
                XmlNode big = node.NextSibling;
                big.InnerText = "this is big";
                //...
                doc.Save("test6.xml");
            }