2
如果找不到一个新的xml文档,然后将其打开以创建一个新条目,则会创建一个新的xml文档。然而,它只是似乎是追加一个完整的新的XML文件来结束我的创建后创建添加新的XElement在保存时将整个XML文件追加到现有文件
空白文件:
<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<Devices />
增加新的XElement后:
<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<Devices /><?xml version="1.0" encoding="utf-8" standalone="yes"?>
<Devices>
<device>
<name>blah</name>
<src00>True</src00>
</device>
</Devices>
我的代码.. 。我尝试过添加两种不同的方式,两种方式都有相同的结果
// Create file if not found
if (!storage.FileExists("settings\\mydevices.xml"))
{
using (IsolatedStorageFileStream stream = storage.OpenFile("settings\\mydevices.xml", FileMode.Create, FileAccess.ReadWrite))
{
XDocument devicesDoc =
new XDocument(
new XDeclaration("1.0", "utf-8", "yes"),
new XElement("Devices")
);
System.IO.StreamWriter file = new System.IO.StreamWriter(stream);
devicesDoc.Save(file);
file.Dispose();
}
}
// Add new device
using (IsolatedStorageFileStream stream = storage.OpenFile("settings\\mydevices.xml", FileMode.Open, FileAccess.ReadWrite))
{
XDocument mydevicesXml = XDocument.Load(stream);
//XElement item= new XElement("device",
// new XElement("name",selectedDeviceName),
// new XElement("src00","True")
// );
//mydevicesXml.Descendants("Devices").First().Add(item);
//mydevicesXml.Element("Devices").Add(item);
mydevicesXml.Root.Add(
new XElement("device",
new XElement("name", selectedDeviceName),
new XElement("src00", "True")));
System.IO.StreamWriter file = new System.IO.StreamWriter(stream);
mydevicesXml.Save(file);
file.Dispose();
谢谢,修复了它 – Jason 2012-02-23 18:16:29