problem extracting with windows explorer

 hi

i am using the

ICSharpCode.SharpZipLib.dll for zipping a folder...when we are extarcting the zip file created by that dll using winzip,7zip,rar it is working properly..but when ia m extracting with windows explorer,subfolders are nt extarcting,only files are extracting....my code is given below..

using

System;

using

System.Collections.Generic;

System.Text;

System.IO;

System.IO.Compression;

ICSharpCode.SharpZipLib.Zip;

winzip_test3

class

Program

staticvoid Main(string

[ args)

ZipOutputStream zip = newZipOutputStream(File.Create(@"D:\abc\test.zip"

));

string folder = @"D:\abc\samples"

;

publicstaticvoid ZipFolder(string RootFolder, string CurrentFolder, ZipOutputStream

zStream)

string[ SubFolders = System.IO.Directory

.GetDirectories(CurrentFolder);

foreach (string Folder in

SubFolders)

string relativePath = CurrentFolder.Substring(RootFolder.Length) + "/"

;

if

(relativePath.Length > 1)

ZipEntry

dirEntry;

newZipEntry

(relativePath);

//dirEntry.DateTime = DateTime.Now;

foreach (string file in System.IO.Directory

.GetFiles(CurrentFolder))

privatestaticvoid AddFileToZip(ZipOutputStream zStream, string relativePath, string

file)

byte[ buffer = newbyte

[4096];

string fileRelativePath = (relativePath.Length > 1 ? relativePath : string.Empty) + Path

.GetFileName(file);

ZipEntry entry = newZipEntry

(fileRelativePath);

DateTime

.Now;

using (FileStream fs = File

.OpenRead(file))

int

sourceBytes;

do

while (sourceBytes > 0);

plz provide some solution as far as possible

thanks