使用C#和Windows Phone 7解析XML [英] Parsing xml using c# and windows phone 7

问题描述

我有一个像这样的xml文件:

I have an xml file like this:

  <xml>
    <students>
      <person name=jhon/>
      <person name=jack/>
      ...
    </students>
    <teachers>
       <person name="jane" />
       <person name="jane" />
       ...
    </teachers>
  </xml>

如果我使用此代码:

var xml = XDocument.Parse(myxmlstring, LoadOptions.None);
foreach(XElement studentelement in xml.Descendants("person"))
{
    MessageBox.Show(studentelement.Attribute("name").Value);
}

一切正常！但是，我不知道我是在拜访学生还是在老师身上.

Everything works fine! However, I don't know if I'm iteratng over the students or the teachers.

但是当我尝试:

var a = xml.Element("students");

a为空！！！

如何使用C#在xml文档中选择特定元素?

How can I select a specific element in my xml document with c#?

如果我只能先对学生进行迭代，填写一些列表框，然后对教师进行迭代，然后再做其他事情，那将是很棒的. :)

It would be awesome if I could iterate over the students only first, fill some listboxes and the iterate over the teachers and do other stuff. :)

以防万一...不能修改xml文件.

The xml file can`t be modified, just in case...

最后，我真正想要的是在文件中获取特定元素的所有子元素.

Finally, all I actually want with all of this is to get all the children of a specific element in my file.

谢谢大家！

推荐答案

Element仅返回直接子节点.要递归浏览xml树，请改用Descendants.

Element only returns the immediate child node. To recursively browse the xml tree, use Descendants instead.

要先列举学生然后再列举教师，您可以执行以下操作:

To successively enumerate the students then the teachers, you could do something like:

var xml = XDocument.Parse(myxmlstring, LoadOptions.None);

var students = xml.Descendants("students");
var teachers = xml.Descendants("teachers");

foreach (var studentElement in students.Descendants("person"))
{
    MessageBox.Show(studentElement.Attribute("name").Value);
}

foreach (var teacherElement in teachers.Descendants("person"))
{
    MessageBox.Show(teacherElement.Attribute("name").Value);
}

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