Xsd or class structure for the following xml (xhtml actually)

Question

Hi,

I have some table of content that is represented as xhtml as shown below (I am only pasting the interesting part) :

<ol>
  <li>
    <a href="wasteland-content.xhtml#ch1">I. THE BURIAL OF THE DEAD</a>
    <ol>
      <li>
        <a href="wasteland-content.xhtml#ch2">I.1 FOOO BAR</a>
        <ol>
          <li>
            <a href="wasteland-content.xhtml#ch2">I.1.1 FOOO BAR</a>
          </li>
          <li>
            <a href="wasteland-content.xhtml#ch2">I.1.2 FOOO BAR</a>
          </li>
        </ol> 
      </li>
      <li>
        <a href="wasteland-content.xhtml#ch2">I.2 FOOO BAR</a>
      </li>
    </ol>
  </li>
  <li>
    <a href="wasteland-content.xhtml#ch2">II. A GAME OF CHESS</a>
  </li>
  <li>
    <a href="wasteland-content.xhtml#ch3">III. THE FIRE SERMON</a>
  </li>
  <li>
    <a href="wasteland-content.xhtml#ch4">IV. DEATH BY WATER</a>
  </li>
  <li>
    <a href="wasteland-content.xhtml#ch5">V. WHAT THE THUNDER SAID</a>
  </li>
  <li>
    <a href="wasteland-content.xhtml#rearnotes">NOTES ON "THE WASTE LAND"</a>
  </li>
</ol>

<ol> is the root node, <li><a> is an entry in the current node and <ol> starts a child node.

So now I would like to be able to deserialize this xml into a data structure so I am starting with the 4 following classes (ol, li, a and Node.cs) :

// Node.cs
[XmlRoot("ol")]
[XmlInclude(typeof(li))]
[XmlInclude(typeof(a))]
public class Node
{
}

// ol.cs
public class ol : Node
{
    [XmlElement("li", typeof(li))]
    [XmlElement("a", typeof(a))]
    public List<Node> Nodes { get; set; }
}

// li.cs
public class li : Node
{
    [XmlElement("a")]
    public a link { get; set; }

    public li() { }

    public li(a link)
    {
        this.link = link;
    }
}

// a.cs
public class a
{
    [XmlAttribute("href")]
    public string Tref { get; set; }
    [XmlText]
    public string Text { get; set; }
}

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            string file = @"C:\Developer\nav.xml";
            XmlSerializer xml = new XmlSerializer(typeof(Node));
            FileStream ifs = new FileStream(file, FileMode.Open, FileAccess.Read);
            Node result = (Node)xml.Deserialize(ifs);
            ifs.Close();

            Console.ReadKey();
        }
    }
}

But I messed up in the definitions and when I try to load the xml given as example I get an exception. 

What am I doing wrong ?

Answer 1

What's the exception is?

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Go go Doraemon!

Answer 2

Hi Vincent Rich,

I've tested the code you post, without any modification, everything works well, no exception was thrown. Could you please clarify what's the exception you received?

Best Regards

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Allen Li [MSFT]
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