How can I force XDocument to output “UTF-8” in the declaration line?

Question

The following code produces this output:

Answer 1

You can use the following code as an example

XDocument doc = GetXmlDoc();
using (var stream = new MemoryStream())
{
    doc.Save(stream, SaveOptions.DisableFormatting);
    var docBytes = stream.ToArray();
    File.WriteAllBytes("fileName.xml", docBytes);
}