Compare hash bytes of two files : File Compare : File Directory Stream C# Examples

    
using  System;
using  System.IO;
using  System.Security.Cryptography;

static  class  MainClass
{
        static  void  Main(string[]  args)
        {
                //  Create  the  hashing  object.
                using  (HashAlgorithm  hashAlg  =  HashAlgorithm.Create())
                {
                        using  (FileStream  fsA  =  new  FileStream("c:\\test.txt",  FileMode.Open),
                                fsB  =  new  FileStream("c:\\test1.txt",  FileMode.Open)){
                                //  Calculate  the  hash  for  the  files.
                                byte[]  hashBytesA  =  hashAlg.ComputeHash(fsA);
                                byte[]  hashBytesB  =  hashAlg.ComputeHash(fsB);

                                //  Compare  the  hashes.
                                if  (BitConverter.ToString(hashBytesA)  ==  BitConverter.ToString(hashBytesB))
                                {
                                        Console.WriteLine("Files  match.");
                                }  else  {
                                        Console.WriteLine("No  match.");
                                }
                        }
                }
        }
}