formatting_xml_16.cs

public class Utf8StringWriter : StringWriter
{
    public override Encoding Encoding => Encoding.UTF8;
}
```
Using this custom writer, we can write our XML in the same way.
```C#
XmlSerializer serializer = new XmlSerializer(typeof(Person));
using (Utf8StringWriter writer = new Utf8StringWriter())
{
    serializer.Serialize(writer, person, namespaces);
    Console.WriteLine(writer.ToString());
}