Cannot Deserialize XmlArray with Namespace

Question

I have the following XML:

    <MovieRunTimes>
      <ShowDate>6/9/2012</ShowDate>
      <ShowTimesByDate xmlns:a="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
        <a:string>12:25</a:string>
        <a:string>17:30</a:string>
        <a:string>22:35</a:string>
      </ShowTimesByDate>
      <TicketURI>http://www.fandango.com/tms.asp?t=AANCC&amp;m=112244&amp;d=2012-06-09</TicketURI>
    </MovieRunTimes>

And the following C# class:

public class MovieRunTimes
{
    [XmlElement("ShowDate")]
    public string ShowDate { get; set; }

    [XmlElement("TicketURI")]
    public string TicketUri { get; set; }

    [XmlArray("ShowTimesByDate", Namespace = "http://schemas.microsoft.com/2003/10/Serialization/Arrays")]
    public List<string> ShowTimesByDate { get; set; }

}

Unfortunately the ShowTimesByDate is empty after I deserialize. If I remove the namespace from the ShowTimesByDate element and the prefix from the string element, then it deserializes fine. How do I correctly use the namespace to deserialize the XML?

DarenMay · Accepted Answer · 2012-06-26 16:09:42Z

4

I discovered how to do this. If I amend the class to:

public class MovieRunTimes
{
    [XmlElement("ShowDate")]
    public string ShowDate { get; set; }

    [XmlElement("TicketURI")]
    public string TicketUri { get; set; }

    [XmlArray("ShowTimesByDate")]
    [XmlArrayItem(Namespace = "http://schemas.microsoft.com/2003/10/Serialization/Arrays")]
    public List<string> ShowTimesByDate { get; set; }

}

It deserializes correctly.

answered Jun 26, 2012 at 16:09

DarenMay

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1 Comment

mdisibio Over a year ago

dude - pounded my head for six hours on same exact problem. scoured MSDN and SO. The solution is irritating though, because if you have a namespace for the outermost element (MoveRunTimes) then the ns applies to that name and the elements within it...so you would think the array ns applies to the array element itself, not its elements ONLY.

Adolfo Perez · Accepted Answer · 2012-06-26 15:45:33Z

1

The trick is to add a namespace prefix ("a" in your case) to your Collection wrapper element:

<MovieRunTimes >
  <ShowDate>6/9/2012</ShowDate>
  <a:ShowTimesByDate xmlns:a="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
    <a:string>12:25</a:string>
    <a:string>17:30</a:string>
    <a:string>22:35</a:string>
  </a:ShowTimesByDate>
  <TicketURI>http://www.fandango.com/tms.asp?t=AANCC&amp;m=112244&amp;d=2012-06-09</TicketURI>
</MovieRunTimes>

That is how it comes out after serializing with this code:

        XmlSerializer xs = new XmlSerializer(typeof(MovieRunTimes));
        XmlSerializerNamespaces ns = new XmlSerializerNamespaces();
        ns.Add("a", "http://schemas.microsoft.com/2003/10/Serialization/Arrays");
        string result = null;
        using(StringWriter writer = new StringWriter())
        {
            xs.Serialize(writer,mrt,ns);
            result = writer.ToString();
        }

answered Jun 26, 2012 at 15:45

Adolfo Perez

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2 Comments

DarenMay Over a year ago

Unfortunately I am consuming the XML, not generating it :(

Adolfo Perez Over a year ago

If that's the case you could either add the missing namespace preffix with XSLT or with LINQ or other XML libraries I guess prior deserializing..

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