Question

我在Windows Phone 8.0 Silverlight中更新XML文件中的内容时遇到问题。我尝试了这个代码，应用程序运行没有任何错误，但XML没有改变任何东西。这是我的C＃代码

 public static void WriteUserData(string filePath, User userObj)
    {
        StreamResourceInfo stream = Application.GetResourceStream(new Uri(filePath, UriKind.RelativeOrAbsolute));
        stream.Stream.Position = 0;
        XDocument doc = XDocument.Load(stream.Stream);
        foreach (var itemU in doc.Descendants("user"))
            foreach (var itemP in itemU.Descendants("player"))
            {
                itemP.SetElementValue("name", "12332");
                itemP.SetElementValue("high", "12332");
                itemP.SetElementValue("current", "12332");
                itemP.SetElementValue("played", "12332");
            }
    }

这些是我的XML文件中的内容。

<?xml version="1.0" encoding="utf-8" ?>
<user>
  <player>
    <name>123123</name>
    <high>181</high>
    <current>0</current>
    <played>0</played>
  </player>
</user>

调试程序贯穿所有行，但事情没有发生，请帮助我！

Answer 1

要在Windows手机上更新XML文件，您必须使用独立存储。

IsolatedStorageFile file = IsolatedStorageFile.GetUserStoreForApplication();

            string fileName = "YourFileName.xml";
            XDocument document;

            if (file.FileExists(fileName))
                using (IsolatedStorageFileStream stream = file.OpenFile(fileName, System.IO.FileMode.Open))
                {
                    document = XDocument.Load(stream);
                }
            else
                document = XDocument.Load(fileName);

            var root = new XElement("player");
           var name = new XElement("name", "1233");
            var high = new XElement("high", "1233");
            var current = new XElement("current ", "1233");
            var played = new XElement("played ", "1233");

            root.Add(name, high, current,played);
            document.Root.Add(root);



            using (IsolatedStorageFileStream stream = file.CreateFile(fileName))
            {
                document.Save(stream);
            }

无法在Windows Phone 8.0上更新XML文件，如何解决？

1 个答案: