Csharp/C Sharp/File Stream/Byte Read Write

Byte-Oriented File input and output

using System;
using System.IO;
class ShowFile {
  public static void Main(string[] args) {
    int i;
    FileStream fin;
    try {
      fin = new FileStream("test.cs", FileMode.Open);
    } catch(FileNotFoundException exc) {
      Console.WriteLine(exc.Message);
      return;
    } catch(IndexOutOfRangeException exc) {
      Console.WriteLine(exc.Message + "\nUsage: ShowFile File");
      return;
    }
    // read bytes until EOF is encountered
    do {
      try {
        i = fin.ReadByte();
      } catch(Exception exc) {
        Console.WriteLine(exc.Message);
        return;
      }
      if(i != -1) Console.Write((char) i);
    } while(i != -1);
    fin.Close();
  }
}

Byte-Oriented: Write to a file

using System;
using System.IO;
class WriteToFile {
  public static void Main(string[] args) {
    FileStream fout;
    try {
      fout = new FileStream("test.txt", FileMode.Create);
    } catch(IOException exc) {
      Console.WriteLine(exc.Message + "\nError Opening Output File");
      return;
    }
    // Write the alphabet to the file.
    try {
      for(char c = "A"; c <= "Z"; c++)
        fout.WriteByte((byte) c);
    } catch(IOException exc) {
      Console.WriteLine(exc.Message + "File Error");
    }
    fout.Close();
  }
}