Use the Deflate algorithm to compress and decompress files.

 

Static void Main ()

{

String path = @ "D: \ Practise \ IO \ Compress ";

 

String deCompressPath = @ "D: \ Practise \ IO \ DeCompress ";

 

DirectoryInfo dir = new DirectoryInfo (path );

Foreach (FileInfo fi in dir. GetFiles ())

{

Compress (fi );

}

Foreach (FileInfo fi in dir. GetFiles ("*. cmp "))

{

DeCompress (fi, deCompressPath );

}

}

Public static void Compress (FileInfo fi)

{

Using (FileStream fs = fi. OpenRead ())

{

If (fi. Attributes! = FileAttributes. Hidden & fi. Extension! = ". Cmp ")

{

Using (FileStream compressfile = new FileStream (fi. FullName + ". cmp", FileMode. Create, FileAccess. ReadWrite ))

{

Using (DeflateStream ds = new DeflateStream (compressfile, CompressionMode. Compress ))

{

Fs. CopyTo (ds );

Console. WriteLine ("This File {0} has been Compressed to {1}", fi. Name, compressfile. Name );

}

} Www.2cto.com

}

}

}

Public static void DeCompress (FileInfo fi, string desination)

{

Using (FileStream fs = fi. OpenRead ())

{

String deCompressFile = fi. Name. Remove (fi. Name. Length-fi. Extension. Length );

Using (FileStream deCompressFS = new FileStream (Path. Combine (desination, deCompressFile), FileMode. Create, FileAccess. ReadWrite ))

{

Using (DeflateStream ds = new DeflateStream (fs, CompressionMode. Decompress ))

{

Ds. CopyTo (deCompressFS );

Console. WriteLine ("This file {0} has been Decompressd", fi. Name );

}

}

}

}

From the column ws_hgo