Folder Icons not applied after Compression(Zip) in C#

See more:

C#4.0

Hi!

My Problem is : The Folder which was applied to customized icons using desktop.ini.But after compression the folder icons are not displaying...

In my Archive code first i used Ionic.Zip.ZipFile which is a third party DLL to compress(zip) the folder.In this case it works perfectly,i mean , even "after extraction(unzip) folder icons has been displaying" but the only drawback which i facing is, if the directory size >3GB it splits the the zip files into many based on the size given.See the Below code :

ZipPassword = Membership.GeneratePassword(9, 5);
float size = 1024 * 1024 * 1024; //Splits 1MB each
string ZipName = DestinationFolder;
using (var zip = new Ionic.Zip.ZipFile())
 {
    zip.Password = ZipPassword;
    zip.Encryption = Ionic.Zip.EncryptionAlgorithm.WinZipAes256;
    zip.AddDirectory(DestinationFolder);
    zip.CompressionMethod = Ionic.Zip.CompressionMethod.Deflate;
    zip.CompressionLevel = Ionic.Zlib.CompressionLevel.BestCompression;
    zip.UseZip64WhenSaving = Zip64Option.Always; 
    zip.MaxOutputSegmentSize = (int)size;
    zip.Save(ZipName + "s.zip");
}

Hence instead i moved to ICSharpCode SharpZipLib for compression.In this case I'm unable to see the related folder icons.See the below code

FastZip z = new FastZip();
            z.RestoreAttributesOnExtract = true;
            z.CreateEmptyDirectories = true;
            z.Password = ZipPassword;
            z.CreateZip(DesFolder+".zip", DesFolder, true, "");

After Extracted(Unzip),the desktop.ini & .ico files are existing but not working.

Please help me...

Thanks in Advance... :-)