解析XML数据（2,2）

Question

I've got a unique problem when I attempt to deserialize XML.

The method is as follows:

XmlSerializer serialize = new XmlSerializer(typeof(APIFile));
using(FileStream stream = new FileStream(file, FileMode.Open))
     using(XmlReader reader= XmlReader.Create(stream))
     {
          APIFile model = serialize.Deserialize(reader) as APIFile;
          Console.WriteLine(model.lSubmission.Select(m => m.Id));
     }

So when the code hits the model I receive an error stating:

• xmlns="> Was not expected.
• There is an error in XML document (2,2).

The model built was populated through Visual Studio Edit -- Past Special -- XML Class .

I've tampered with the following line:

[System.Xml.Serialization.XmlRootAttribute(Namespace = "", IsNullable = false)]

I've modified the line:

• Namespace
• xmlns
• Removed the line.
• Changed from a Root Attribute

But the error persist and I'm not entirely sure why.

---

<?xml version="1.0" encoding="UTF-8"?>
<CanvasResult>
     <TotalPages>8</TotalPages>
     <CurrentPage>1</CurrentPage>
     <Submissions>
          <Submission Id="5840790">
               <Form Id="718013">
                    <Name>Proof of Delivery</Name>
                    <Status>retired</Status>
                    <Version>6</Version>
               </Form>

---

That is the first little bit of the XML, after that is some more minor content / section which will build out a little further. My document doesn't have a xmlns anywhere in the file, is it possible the Reader or XmlSerializer are adding it?

Answer 1

I managed to isolate the issue to a couple of items:

• The data model wasn't handling all of the content that was inserted.
• The third party API was passing & in the XML, which also caused an error.

I wrote a simple validation method that ran through the file to validate the XML and fix any malformed tags or symbols.

The code that worked that finally deserialized the values is:

    public static void ParseToModel(string file)
    {
        if (string.IsNullOrEmpty(file))
            throw new ArgumentNullException();

        XmlSerializer serialize = new XmlSerializer(typeof(CanvasResult));
        using(FileStream stream = new FileStream(file, FileMode.Open, FileAccess.ReadWrite, FileShare.ReadWrite))
            using(XmlReader reader= XmlReader.Create(stream))
            {
                CanvasResult model = serialize.Deserialize(reader) as CanvasResult;
                ParseToDatabase(model);
            }
    }

The method is called, which will take the file parameter then correlate the content to the data model. At the end it calls a separate method called ParseToDatabase which breaks the content down and placed into the proper column within the database.

Answer 2

Easiest way i found of dealing with xml is to use XDocuments / XElements ...

using(var reader = StreamReader(new FileStream(file, FileMode.Open)))
{
   var data = reader.ReadToEnd();
   var xml = new XElement(data);
   //TODO: query xml with linq or whatever
}

Works with whole docs and fragments