在Windows Phone应用程序中写入Xml

本文关键字：Xml 应用程序 Windows Phone | 更新日期: 2024-10-24 07:31:38

我有这些代码可以很好地为我的WPF应用程序创建xml文档。

var doc = new XmlDocument();
XmlNode docNode = doc.CreateXmlDeclaration("1.0", "UTF-8", null);
doc.AppendChild(docNode);
var parentNode = doc.CreateElement("manga");
doc.AppendChild(parentNode);
foreach (var mList in mangaList)
{
    var itemNode = doc.CreateElement("item");
    var itemAttribute = doc.CreateAttribute("value");
    itemAttribute.Value = mList.Key;
    itemNode.InnerText = mList.Value;
    itemNode.Attributes.Append(itemAttribute);
    parentNode.AppendChild(itemNode);
}
var writer = new XmlTextWriter(@"Data'mangalist.xml", null);
writer.Formatting = Formatting.Indented;
doc.Save(writer);
writer.Close();

现在我想为Windows Phone 7.5创建类似的应用程序，我一直在移植上面的代码以便能够在WP中运行。快速搜索后，我发现XmlDocument在Windows Phone中不可用，必须使用XDocument进行切换。我对XDocument还不熟悉，希望有人能帮助我使我的windows手机应用程序输出相同的xml。感谢

解决方案：

在@Pradeep Kesharwani和@dav_i的良好提示后，我设法移植了上面的代码，使用XDocument和StreamWriter，而不是WP:不可用的XmlDocument和XmlTextWriter

var doc = new XDocument(new XDeclaration("1.0", "utf-8", "no"));
var root = new XElement("manga");
var mangaList = new Dictionary<string, string>();
mangaList.Add("conan", "conan");
mangaList.Add("naruto", "naruto");
foreach (var mList in mangaList)
{
    var itemNode = new XElement("item");
    var itemAttribute = new XAttribute("value", mList.Key);
    itemNode.Value = mList.Value;
    itemNode.Add(itemAttribute);
    root.Add(itemNode);
}
doc.Add(root);
using (var writer = new StreamWriter(@"Data'mangalist2.xml"))
{
    writer.Write(doc.ToString());
}

在Windows Phone应用程序中写入Xml

正如我在评论中所说，XDocument非常直接——

new XDocument(
    new XDeclaration("1.0", "utf-8", "no"),
    new XElement("root",
        new XElement("something",
            new XAttribute("attribute", "asdf"),
            new XElement("value", 1234),
            new XElement("value2", 4567)
        ),
        new XElement("something",
            new XAttribute("attribute", "asdf"),
            new XElement("value", 1234),
            new XElement("value2", 4567)
        )
    )
)

给出以下

<root>
  <something attribute="asdf">
    <value>1234</value>
    <value2>4567</value2>
  </something>
  <something attribute="asdf">
    <value>1234</value>
    <value2>4567</value2>
  </something>
</root>

希望这对你有帮助！

要在循环中自动填充，可以执行以下操作：

var somethings = new List<XElement>();
for (int i = 0; i < 3; i++)
    somethings.Add(new XElement("something", new XAttribute("attribute", i + 1)));
var document = new XDocument(
    new XElement("root",
        somethings));

导致

<root>
  <something attribute="1" />
  <something attribute="2" />
  <something attribute="3" />
</root>

此Create方法可用于在wp7 中创建xml文档

private void CreateXml()
{
    string xmlStr = "<RootNode></RootNode>";
    XDocument document = XDocument.Parse(xmlStr);
    XElement ex = new XElement(new XElement("FirstNOde"));
    XElement ex1 = new XElement(new XElement("second"));
    ex1.Value = "fdfgf";
    ex.Add(ex1);
    document.Root.Add(new XElement("ChildNode", "World!"));
    document.Root.Add(new XElement("ChildNode", "World!"));
    document.Root.Add(ex);
    string newXmlStr = document.ToString();           
}

这将是创建的xml

<RootNode>
  <ChildNode>World!</ChildNode>
  <ChildNode>World!</ChildNode>
  <FirstNOde>
    <second>fdfgf</second>
  </FirstNOde>
</RootNode>

public void ReadXml()
{
    IsolatedStorageFileStream isoFileStream = myIsolatedStorage.OpenFile("Your xml file name", FileMode.Open);
    using (XmlReader reader = XmlReader.Create(isoFileStream))
    {
        XDocument xml = XDocument.Load(reader);
        XElement root1 = xml.Root;
    }
}
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