XML LINQ C#

using System;
using System.IO;
using System.Text;
using System.Linq;
using System.Xml.Linq;
using System.Xml;
using System.Collections;
using System.Collections.Generic;
public class MainClass
{
    public static void Main()
    {
        XDocument doc = new XDocument(
            new XElement("Root",
                new XElement("Child", "content")
            )
        );
        StringBuilder sb1 = new StringBuilder();
        using (StringWriter sr1 = new StringWriter(sb1))
        {
            doc.Save(sr1, SaveOptions.None);
            Console.WriteLine(sb1.ToString());
        }
        StringBuilder sb2 = new StringBuilder();
        using (StringWriter sr2 = new StringWriter(sb2))
        {
            doc.Save(sr2, SaveOptions.DisableFormatting);
            Console.WriteLine(sb2.ToString());
        }
    }
}