Serialize an XDocument to a string with the XML declaration.
using System;
using System.Text;
using System.Xml;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Xml.Linq;
class Program
{
static void Main()
{
var doc = new XDocument(
new XDeclaration("1.0", "utf-8", "yes"),
new XElement("test", "data")
);
var output = new StringBuilder();
var settings = new XmlWriterSettings { Indent = true };
using (XmlWriter xw = XmlWriter.Create(output, settings))
doc.Save(xw);
Console.WriteLine(output.ToString());
}
}
The output:
data