Code for file handling

using System;
using System.IO;
namespace Console_FileHandling_P_
{
    class Program
    {
        public void writingText()
        {
            //For file Writing
            FileStream fs = new FileStream(@"D:\C# Console Prog 2012\Demo.txt", FileMode.Append, FileAccess.Write);
            StreamWriter sw = new StreamWriter(fs);
            Console.WriteLine("Enter your Name :");
            string nm = Console.ReadLine();
            Console.WriteLine("Enter your age :");
            int age = int.Parse(Console.ReadLine());
            sw.WriteLine("Hello! Your Name is :" + nm);
            sw.WriteLine("And age is : " + age);
            sw.Flush();
            sw.Close();
            fs.Close();
            Console.WriteLine("File has been created");
        }

        public void readingText()
        {
            // For file reading
            FileStream fs = new FileStream(@"D:\C# Console Prog 2012\Demo.txt", FileMode.Open, FileAccess.Read);
            StreamReader sr = new StreamReader(fs);
            string txt = sr.ReadLine();
            while (txt != null)
            {
                Console.WriteLine(txt);
                txt = sr.ReadLine();

            }
            sr.Close();
            fs.Close();
        }

        static void Main(string[] args)
        {
            Program prog = new Program();
            prog.writingText();
            prog.readingText();
            Console.ReadKey();

        }
    }
}