How to Define Namespace Prefixes in C# XML Serialization?

Defining namespace prefixes in C# XML serialization

Question:

How do I control the prefix associated with a namespace when serializing a class to XML using C#? The expected output contains the specified namespace prefix.

Answer:

To specify a namespace prefix, you can use the XmlSerializerNamespaces class. Here’s how:

[XmlRoot("Node", Namespace = "http://flibble")]
public class MyType
{
    [XmlElement("childNode")]
    public string Value { get; set; }
}

static class Program
{
    static void Main()
    {
        XmlSerializerNamespaces ns = new XmlSerializerNamespaces();
        ns.Add("myNamespace", "http://flibble");
        XmlSerializer xser = new XmlSerializer(typeof(MyType));
        xser.Serialize(Console.Out, new MyType(), ns);
    }
}

This code will generate XML with the required namespace prefix:

<node xmlns:mynamespace="http://flibble"><childnode>something in here</childnode></node>

Change namespace at runtime:

If you need to change the namespace at runtime, you can use XmlSerializerNamespaces in addition to XmlAttributeOverrides.

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