The Zip, GZip, BZip2 and Tar Implementation For .NET

#ziplib (SharpZipLib, formerly NZipLib) is a Zip, GZip, Tar and BZip2 library written entirely in C# for the .NET platform. It is implemented
as an assembly (installable in the GAC), and thus can easily be incorporated into other projects (in any .NET language). The creator of #ziplib put it this
way: "I've ported the zip library over to C# because I needed gzip/zip compression and I didn't want to use libzip.dll or something like this. I want
all in pure C#."

Ref:http://www.icsharpcode.net/

Ref:http://www.icsharpcode.net/OpenSource/SharpZipLib/Default.aspx

Example:

Reference:ICSharpCode.SharpZipLib.dll

----------------------------------------------

using System.IO;

using ICSharpCode.SharpZipLib.Core;

using ICSharpCode.SharpZipLib.Zip;



string sourceDir = "d:\\ziptest";

string targetZipDir = "d:\\ziptest\\zip";

string targetUnZipDir = "d:\\ziptest\\unzip";

string targetZipFile = "d:\\ziptest\\zip\\temp";

Init

            var astrFileNames = Directory.GetFiles(sourceDir);



            if (!Directory.Exists(targetZipDir))

            {

                Directory.CreateDirectory(targetZipDir);

            }



            var strmZipOutputStream = new ZipOutputStream(File.Create(targetZipFile));



            try

            {

                strmZipOutputStream.SetLevel(9);

                byte[] abyBuffer = new byte[4096];



                foreach (var strFile in astrFileNames)

                {

                    var strmFile = File.OpenRead(strFile);

                    try

                    {

                        var objZipEntry = new ZipEntry(strFile);



                        objZipEntry.DateTime = DateTime.Now;

                        objZipEntry.Size = strmFile.Length;



                        strmZipOutputStream.PutNextEntry(objZipEntry);

                        StreamUtils.Copy(strmFile, strmZipOutputStream, abyBuffer);

                    }

                    finally

                    {

                        strmFile.Close();

                    }





                }



                strmZipOutputStream.Finish();

            }

            finally

            {

                strmZipOutputStream.Close();

            }

Zip Code

            try

            {

                using (ZipInputStream s = new ZipInputStream(File.OpenRead(targetZipFile)))

                {



                    ZipEntry theEntry;

                    while ((theEntry = s.GetNextEntry()) != null)

                    {

                        string fileName = Path.GetFileName(theEntry.Name);



                        if (!Directory.Exists(targetUnZipDir))

                        {

                            Directory.CreateDirectory(targetUnZipDir);

                        }



                        if (fileName != String.Empty)

                        {

                            using (FileStream streamWriter = File.Create(targetUnZipDir + "\\" + Path.GetFileName(theEntry.Name)))

                            {



                                int size = 2048;

                                byte[] data = new byte[2048];

                                while (true)

                                {

                                    size = s.Read(data, 0, data.Length);

                                    if (size > 0)

                                    {

                                        streamWriter.Write(data, 0, size);

                                    }

                                    else

                                    {

                                        break;

                                    }

                                }

                            }

                        }

                    }

                }

            }

            catch (Exception ex)

            {

                throw ex;

            }

UnZip Code