<?xml version="1.0" encoding="utf-8"?>
<reminders>
  <reminder>
    <Title>Alarm1</Title>
    <Description>Desc1</Description>
    <Time>03/07/2012 10:11AM</Time>
    <snooze>1</snooze>
    <repeat>None</repeat>
  </reminder>
</reminders>

而且我想修改从Alarm1到另一个值的内在文本,所以我写了那个实际上重复整个节点的代码.

XmlDocument xml = new XmlDocument();

        xml.Load("0.xml");

        XmlNodeList elements = xml.SelectNodes("//reminders");

        foreach (XmlNode element in elements)
        {
            if (element.InnerText == "Alarm1")
            {
                XmlNode newvalue = xml.CreateElement("MODIFIED");
                element.ReplaceChild(newvalue,element);

                xml.Save("0.xml");
            }
        }

然后尝试另一个代码：

foreach (XmlElement element in xml.SelectNodes("//reminder"))
        {
            if (element.InnerText == "Alarm1")
            {
                XmlNode newvalue = xml.CreateElement("MODIFIED");
                element.ReplaceChild(newvalue,element);

                xml.Save("0.xml");
            }
        }

但也没有工作….

编辑1：[找出一个新的代码]

XmlDocument xml = new XmlDocument();

        xml.Load("0.xml");

        foreach (XmlElement element in xml.SelectNodes("//reminder"))
        {
            foreach (XmlElement element1 in element)
            {
                if (element.SelectSingleNode("//Title").InnerText == "Alarm1")
                {
                    XmlNode newvalue = xml.CreateElement("MODIFIED");
                    element.ReplaceChild(newvalue,element1);

                    xml.Save("0.xml");
                }
            }
        }

但它使得Alarm1变成了

<MODIFIED />

编辑2：[我解决了：D]
好的,这里是我可以找出的代码：

XmlDocument xml = new XmlDocument();

        xml.Load("0.xml");

        foreach (XmlElement element in xml.SelectNodes("//reminder"))
        {
            foreach (XmlElement element1 in element)
            {
                if (element.SelectSingleNode("//Title").InnerText == "Alarm1")
                {
                    MessageBox.Show(element1.InnerText);
                    XmlNode newvalue = xml.CreateElement("Title");
                    newvalue.InnerText = "MODIFIED";
                    element.ReplaceChild(newvalue,element1);

                    xml.Save("0.xml");
                }
            }
        }

我真的很感谢你的帮助和谢谢.