compare

compare

• Reyad

  You can also creating hash values and compare, like the way SourceSafe default to.
  Check out GetHashFromFile method in MSDN (http://msdn2.microsoft.com/en-us/library/dchdsb9x.aspx).
  
  Hope it helps,
  Thi
  
  

• skipsizemore

  Indeed, very helpfull Truong Hong Thi!
  
  Here is a little code example:
  

  using(FileStream file1 = new FileStream("@c:\file1.txt", FileMode.Open, FileAccess.Read )) using(FileStream file2 = new FileStream("@c:\file2.txt", FileMode.Open, FileAccess.Read )) {     MD5 md5 = new MD5CryptoServiceProvider();     byte[] hash1 = md5.ComputeHash( file1 );     byte[] hash2 = md5.ComputeHash( file2 );     if( !hash1.Length.Equals( hash2.Length ))     {         return false;     }     for( int i = 0; i < hash1.Length; i++ )     {         if( !hash1[ i ].Equals( hash2[ i ] ))         {             return false;         }     }     return true; }

  
  
  
  

• Saul775

  thanks my frind

  but i need to compare two big text files can you help me

  
  
  

• 12345x123456

  Then here is a little optimalization, but if this is still to slow you need to do it with a block-reader:
  
  

  using(StreamReader readerFile1 = new StreamReader(@"c:\file1.txt")) using(StreamReader readerFile2 = new StreamReader(@"c:\file2.txt")) { // Determ of the stream support seeking. if( readerFile1.BaseStream.CanSeek && readerFile2.BaseStream.CanSeek ) { if( readerFile1.BaseStream.Length != readerFile2.BaseStream.Length ) { return false; } } string line1 = null; string line2 = null; while( (line1 = readerFile1.ReadLine() ) != null ) { line2 = readerFile2.ReadLine(); if( line2 == null ) { return false; } else { if( !line1.Equals( line2 ) ) { return false; } } } line2 = readerFile2.ReadLine(); if( line2 == null ) { return true; } else { return false; } }

  
  
  
  

• vinod singh

  Thanks all

  You were very helpfull

  
  
  

• Paul.2010

  For small files you can do this:
  
  

  using(StreamReader readerFile1 = new StreamReader(@"c:\file1.txt")) using(StreamReader readerFile2 = new StreamReader(@"c:\file2.txt")) { string file1Content = readerFile1.ReadToEnd(); string file2Content = readerFile2.ReadToEnd(); if( file1Content.Equals( file2Content ) ) { // The files are equal. } }

  
  
  
  
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