Csharp/C Sharp/File Stream/File Stream Encode

Uses StreamReader and StreamWriter object using different encoding to translate a file from one to another

/*
C# Programming Tips & Techniques
by Charles Wright, Kris Jamsa
Publisher: Osborne/McGraw-Hill (December 28, 2001)
ISBN: 0072193794
*/
// StrmCnvt.cs -- Uses StreamReader and StreamWriter object using different
//                encoding to translate a file from one to another
//
//                Compile this program with the following command line:
//                    C:>csc StrmCnvt.cs
using System;
using System.IO;
using System.Text;
namespace nsStreams
{
    public class StrmCnvt
    {
        static public void Main ()
        {
            FileStream istrm;
            FileStream ostrm;
            StreamReader reader;
            StreamWriter writer;
            try
            {
// Open the input file
                istrm = new FileStream ("./StrmRdr.txt", FileMode.Open, FileAccess.Read);
// Link a stream reader to the stream
                reader = new StreamReader (istrm, Encoding.ASCII);
            }
            catch (Exception e)
            {
                Console.WriteLine (e.Message);
                Console.WriteLine ("Cannot open ./StrmRdr.txt");
                return;
            }
            try
            {
// Open the output file
                ostrm = new FileStream ("./StrmRdr.Uni", FileMode.OpenOrCreate, FileAccess.Write);
// Link a stream reader to the stream
                writer = new StreamWriter (ostrm, Encoding.Unicode);
            }
            catch (Exception e)
            {
                Console.WriteLine (e.Message);
                Console.WriteLine ("Cannot open ./StrmRdr.Uni");
                return;
            }
            ostrm.SetLength (0);
            while (reader.Peek () >= 0)
            {
                string str = reader.ReadLine ();
                writer.WriteLine (str);
            }
            reader.Close ();
            istrm.Close ();
            writer.Close ();
            ostrm.Close ();
        }
    }
}
//File: StrmRdr.txt
/*
                 I Hear America Singing
I hear American Mouth-Songs, the varied carols I hear;
Those of mechanics -- each one singing his, as it should be,
        blithe and strong;
The carpenter singing his, as he measures his plank or beam,
The mason singing his, as he makes ready for work, or leaves
        off work;
The boatman singing what belongs to him in his boat -- the
        deckhand singing on the steamboat deck;
The shoemaker singing as he sits on his bench -- the hatter
        singing as he stands;
The wood-cutter"s song -- the ploughboy"s, on his way in the
        morning, or at the noon intermission, or at sundown;
The delicious singing of the mother -- or of the young wife at
        work -- or of the girl sewing or washing -- Each singing
        what belongs to her, and to none else;
The day what belongs to the day -- At night, the party of young
        fellows, robust, friendly;
Singing, with open mouths, their strong melodious songs.
                             -- Walt Whitman, 1860
*/