How do I Deserialize xml document with namespaces using XmlSerializer?

Question

When deserializing a document using XmlSerializer are not deserialized correctly

Document

<?xml version=\"1.0\"?>
<ns0:ElementA xmlns:ns0=\"urn:some-namespace\">
    <Prop1>Some Value</Prop1>
    <Prop2>Some other value</Prop2>
</ns0:ElementA>

Class

[XmlRoot(Namespace = "urn:some-namespace")]
public class ElementA
{
    [XmlElement]
    public string Prop1 { get; set; }

    [XmlElement]
    public string Prop2 { get; set; }
}

Both Prop1 and Prop2 are null at the end of the deserialization.

I cannot change the structure of the document to get rid of the namespace so I need to handle the deserialization properly on my side.

The document has been simplified for the purpose of reproduction

How should I set the attributes on the ElementA to handle the deserialization correctly??

-- Here is the full code for reproducing the problem --

namespace ConsoleApplication1
{
    using System;
    using System.IO;
    using System.Xml.Serialization;

    public class Program
    {
        [XmlRoot(Namespace = "urn:some-namespace")]
        public class ElementA
        {
            [XmlElement]
            public string Prop1 { get; set; }

            [XmlElement]
            public string Prop2 { get; set; }
        }

        static void Main(string[] args)
        {
            var element =
                "<?xml version=\"1.0\"?>" + Environment.NewLine +
                "<ns0:ElementA xmlns:ns0=\"urn:some-namespace\">" + Environment.NewLine+                    "    <Prop1>Some Value</Prop1>" + Environment.NewLine +
                "    <Prop2>Some other value</Prop2>" + Environment.NewLine +
                "</ns0:ElementA>";

            XmlSerializer serializer = XmlSerializer.FromTypes(new[] { typeof(ElementA) })[0];
            ElementA result;

            using (var reader = new StringReader(element))
            {
                result = serializer.Deserialize(reader) as ElementA;
            }

            Console.WriteLine("Prop1: " + result.Prop1);
            Console.WriteLine("Prop2: " + result.Prop2);
            Console.ReadKey();
        }
    }
}

Random thought - have you tried [XmlElement(Namespace="")] on the properties? — Marc Gravell
– Marc Gravell, Commented Oct 17, 2011 at 15:33
@Marc, that's exactly what needs to be done. You can post this as answer. — Darin Dimitrov
– Darin Dimitrov, Commented Oct 17, 2011 at 15:38
@Darin - I was on mobile, and not in a position to validate, hence I didn't post as an answer (I like to be reasonably confident in answers). BTW, looks like I only have a few months left now before you overtake me ;p — Marc Gravell
– Marc Gravell, Commented Oct 17, 2011 at 15:56
@MarcGravell, reputation is not important. It's the quality of the answers that really matters. And yours have always been of a very high quality and allowing many developers to learn from. — Darin Dimitrov
– Darin Dimitrov, Commented Oct 17, 2011 at 16:03

Marc Gravell · Accepted Answer · 2011-10-17 15:55:55Z

15

Originally posted as a comment, since I haven't verified it, but:

<Prop1>Some Value</Prop1>

is not the same as

<ns0:Prop1>Some Value</ns0:Prop1>

So to get it working, you probably just need:

[XmlElement(Namespace="")]
public string Prop1 { get; set; }

[XmlElement(Namespace="")]
public string Prop2 { get; set; }

answered Oct 17, 2011 at 15:55

Marc Gravell

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2 Comments

angrifel Over a year ago

Works as indicated. I incorrectly assumed that leaving the namespace unsetted was that the same as setting it to "". Obviously, I was wrong.

Marc Gravell Over a year ago

@Felipe "not stated" means "use the member-name for the element-name, and inherit the namespace from the parent"

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