loop through all of the files in a directory and perform a hex dump - CSharp File IO

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Description

loop through all of the files in a directory and perform a hex dump

Demo Code

using System;/*ww w.  j a v  a  2 s.  c  o m*/
using System.IO;
public class Program
{
   public static void Main(string[] args)
   {
      string directoryName = Directory.GetCurrentDirectory();
      Console.WriteLine(directoryName);
      FileInfo[] files = GetFileList(directoryName);
      foreach(FileInfo file in files)
      {
         Console.WriteLine("\n\nhex dump of file {0}:", file.FullName);
         DumpHex(file);
         break;
      }
      Console.WriteLine("\no files left");
   }
   public static FileInfo[] GetFileList(string directoryName)
   {
      FileInfo[] files = new FileInfo[0];
      try
      {
         DirectoryInfo di = new DirectoryInfo(directoryName);
         files = di.GetFiles();
      }
      catch(Exception e)
      {
         Console.WriteLine("Directory \" + directoryName" + "\" invalid");
         Console.WriteLine(e.Message);
      }
      return files;
   }
   public static void DumpHex(FileInfo file)
   {
      FileStream fs;
      BinaryReader reader;
      try
      {
         fs = file.OpenRead();
         reader = new BinaryReader(fs);
      }
      catch(Exception e)
      {
         Console.WriteLine("\ncan't read from \"" + file.FullName + "\"");
         Console.WriteLine(e.Message);
         return;
      }
      for(int line = 1; true; line++)
      {
         byte[] buffer = new byte[10];
         int numBytes = reader.Read(buffer, 0, buffer.Length);
         if (numBytes == 0)
         {
            return;
         }
         Console.Write("{0:D3} - ", line);
         DumpBuffer(buffer, numBytes);
         if ((line % 20) == 0)
         {
            Console.WriteLine("Enter return to continue another 20 lines");
            Console.ReadLine();
         }
      }
   }
   public static void DumpBuffer(byte[] buffer, int numBytes)
   {
      for(int index = 0; index < numBytes; index++)
      {
         byte b = buffer[index];
         Console.Write("{0:X2}, ", b);
      }
      Console.WriteLine();
   }
}

Result


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