XmlSerialize a custom collection with an Attribute
- by roomaroo
I've got a simple class that inherits from Collection and adds a couple of properties. I need to serialize this class to XML, but the XMLSerializer ignores my additional properties.
I assume this is because of the special treatment that XMLSerializer gives ICollection and IEnumerable objects. What's the best way around this?
Here's some sample code:
using System.Collections.ObjectModel;
using System.IO;
using System.Xml.Serialization;
namespace SerialiseCollection
{
class Program
{
static void Main(string[] args)
{
var c = new MyCollection();
c.Add("Hello");
c.Add("Goodbye");
var serializer = new XmlSerializer(typeof(MyCollection));
using (var writer = new StreamWriter("test.xml"))
serializer.Serialize(writer, c);
}
}
[XmlRoot("MyCollection")]
public class MyCollection : Collection<string>
{
[XmlAttribute()]
public string MyAttribute { get; set; }
public MyCollection()
{
this.MyAttribute = "SerializeThis";
}
}
}
This outputs the following XML (note MyAttribute is missing in the MyCollection element):
<?xml version="1.0" encoding="utf-8"?>
<MyCollection xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<string>Hello</string>
<string>Goodbye</string>
</MyCollection>
What I want is
<MyCollection MyAttribute="SerializeThis"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<string>Hello</string>
<string>Goodbye</string>
</MyCollection>
Any ideas? The simpler the better. Thanks.
