Reading XML File and Writing it to .txt format in C#

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Xml;
using System.IO;


namespace ReadXMLfromFile
{

    class Class1
    {
        static void Main(string[] args)
        {
            XmlTextReader reader = new XmlTextReader("Visitors (2).xml");
            while (reader.Read())
            {
                switch (reader.NodeType)
                {
                    case XmlNodeType.Element: 
                        Console.WriteLine(reader.Value);

                        break;
                    case XmlNodeType.Text: 
                        Console.WriteLine(reader.Value);
                        break;
                }
            }
            Console.ReadLine();
            string onlyContent = string.Empty;

            XmlDocument xdoc = new XmlDocument();
            xdoc.Load(@"C:\Users\afshandc\Desktop\ConsoleApplication1\ConsoleApplication1\Visitors (2).xml");

            var visitors = xdoc.SelectNodes("Visitors/Visitor");
            for (int i = 0; i < visitors.Count; i++)
            {

                onlyContent += string.Format("\n", i);

                foreach (XmlNode node in visitors[i].ChildNodes)
                    onlyContent += string.Format("{0}", node.InnerText);
            }

            File.WriteAllText(@"C:\Users\afshandc\Desktop\ConsoleApplication1\ConsoleApplication1\Written XML.txt", onlyContent);
        }
    }

}

<Visitors>
  <Visitor>
    <FirstName>fanem</FirstName>
    <LastName>lname</LastName>
    <ContactNo>0772569984</ContactNo>
    <Email>ac@gs.com</Email>
    <Date>7/17/2013 9:04:48 AM</Date>
  </Visitor>
  <Visitor>
    <FirstName>fname22</FirstName>
    <LastName>Lname234</LastName>
    <ContactNo>1234567890</ContactNo>
    <Email>visitorgmail.com</Email>
    <Date>7/17/2013 9:11:02 AM</Date>
  </Visitor>