C# 如何向xml文件添加新节点

我在向现有xml添加节点时遇到问题。我不确定node是否是正确的名称。如果不是，请有人纠正我。它要大得多，但这个例子应该可以做到这一点

下面是xml文件的外观

<?xml version="1.0" encoding="utf-8"?>
<MovieData xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
    <Movie>
        <Name>Death Race</Name>
        <Type>Action</Type>
        <Type>Adventure</Type>
        <Rating>R</Rating>
        <Disk>Blu-Ray</Disk>
    </Movie>
    <Movie>
        <Name>Death Race 2</Name>
        <Type>Action</Type>
        <Type>Adventure</Type>
        <Rating>R</Rating>
        <Disk>Blu-Ray</Disk>
    </Movie>
</MovieData>

这也不行

XmlDocument doc = new XmlDocument();
doc.Load(movieListXML);
XmlNode node = doc.SelectSingleNode("/MovieData");
foreach (XmlNode movie in node.SelectNodes("Movie"))
{
    if (movie != null)
    {
        // Do stuff here.
        // I'm not sure what to do here.
        using(XmlWriter writer = node.CreateNavigator().AppendChild())
        {
            writer.WriteStartElement("SeriesType", movieListXML);
            writer.WriteElementString("Time", movieListXML, "time");
            writer.WriteEndElement();
        }
    }
}

---

我通常使用Linq的XDocument来处理XML。您需要将System.Xml.Linq添加到using语句中。可能是这样的：

        string movieListXML = @"c:\test\movies.xml";
        XDocument doc = XDocument.Load(movieListXML);
        foreach (XElement movie in doc.Root.Descendants("Movie"))
        {
            movie.Add(new XElement("Time", "theTime"));
        }
        doc.Save(movieListXML);

---

我想这个问题刚刚得到了回答，看看上面我试了什么，它仍然不起作用。什么都没发生。我没有收到错误，文件中没有添加任何内容。可能您忘记添加字符串movieListXML=@“c:\test\movies.xml”；不，我不确定发生了什么，但我得到了上面的答案。谢谢你的帮助。

XmlDocument doc = new XmlDocument();
doc.Load(movieListXML);
XmlNode node = doc.SelectSingleNode("/MovieData");
foreach (XmlNode movie in node.SelectNodes("Movie"))
{
    if (movie != null)
    {
        // Do stuff here.
        // I'm not sure what to do here.
        using(XmlWriter writer = node.CreateNavigator().AppendChild())
        {
            writer.WriteStartElement("SeriesType", movieListXML);
            writer.WriteElementString("Time", movieListXML, "time");
            writer.WriteEndElement();
        }
    }
}

XmlDocument doc = new XmlDocument();
doc.Load(movieListXML);
XmlNode node = doc.SelectSingleNode("/MovieData");
foreach (XmlNode movie in node.SelectNodes("Movie"))
{
    if (movie != null)
    {
        XmlElement elem = doc.CreateElement("Time");
        elem.InnerText = "time";
        movie.AppendChild(elem);
    }
}
doc.Save(movieListXML);

        string movieListXML = @"c:\test\movies.xml";
        XDocument doc = XDocument.Load(movieListXML);
        foreach (XElement movie in doc.Root.Descendants("Movie"))
        {
            movie.Add(new XElement("Time", "theTime"));
        }
        doc.Save(movieListXML);