using System;

using System.IO;

using Ionic.Zip;

using System.Collections;

​

public class Program

{

​

    static public bool CreateZipFile(ArrayList filenames)

        {

            string m_Error;

    ZipOutputStream m_ZipStream = null;

    string m_TargetFile = "MyZipFiles.zip";

​

            // Validate inputs

            if (string.IsNullOrEmpty(m_TargetFile))

            {

                m_Error = string.Format("Target file name cannot be empty");

                return false;

            }

​

            try

            {

                // Dispose previous zip stream

                if (m_ZipStream != null)

                    m_ZipStream.Dispose();

​

                // Create the file stream

                FileStream fsZipFile = File.Create(m_TargetFile);

                try

                {

                    // Creat zip stream

                    m_ZipStream = new ZipOutputStream(fsZipFile);

​

                    // Password protect

                    //if (!string.IsNullOrEmpty(m_Password))

                    //    m_ZipStream.Password = m_Password;

​

                    // 0 - store only

                    // 9 - means best compression

                    //m_ZipStream.SetLevel(9);

                    m_ZipStream.CompressionLevel = Ionic.Zlib.CompressionLevel.BestCompression;

​

                    int nBytes = 4;

                    Byte[] ByteArray = new Byte[nBytes];

                    int nReadCount;

​

                    // Loop over each file to add to zip file

                    foreach (String file in filenames)

                    {

                        // Using GetFileName makes the result compatible with XP

                        // as the resulting path is not absolute.

                        //ZipEntry zEntry = new ZipEntry(Path.GetFileName(file));

​

                        // Setup entry data as required

​

                        // Crc and size are handled by the library for seakable streams

                        // so no need to do them here

​

                        // Could also use the last write time or similar for file.

                        //zEntry.DateTime = DateTime.Now;

                        //m_ZipStream.PutNextEntry(zEntry);

​

                        ZipEntry zEntry = m_ZipStream.PutNextEntry(Path.GetFileName(file));

                        zEntry.CreationTime = DateTime.Now;

​

                        FileStream fsSourceFile = File.OpenRead(file);

                        try

                        {

                            // Using a fixed size buffer here makes no noticeable difference for output

                            // but keeps a lid on memory usage.

                            do

                            {

                                nReadCount = fsSourceFile.Read(ByteArray, 0, ByteArray.Length);

                                m_ZipStream.Write(ByteArray, 0, nReadCount);

                            }

                            while (nReadCount > 0);

                        }

                        finally

                        {

                            if (fsSourceFile != null)

                                fsSourceFile.Dispose();

                        }

                    }

​

                    // Finish important to ensure trailing information for Zip file is appended

                    // Without this created file would be invalid.

                    //m_ZipStream.Finish();

​

                    // Close important to wrap things up and unlock the file.

                    m_ZipStream.Close();

                }

                finally

                {

                    if (fsZipFile != null)

                        fsZipFile.Dispose();

                }

            }

            catch (Exception ex)

            {

                m_Error = string.Format("CreateZipFile unhandled exception - {0}", ex.Message);

                return false;

            }

​

            return true;

        }

    public static void Main()

    {

        string text = @"1732,Juan Perez,435.00,11-05-2002

                    554,Pedro Gomez,12342.30,06-02-2004

                    112,Ramiro Politti,0.00,01-02-2000

                    924,Pablo Ramirez,3321.30,24-11-2002";

​

        File.WriteAllText(@"test0.txt", text);

        File.WriteAllText(@"test1.txt", text);

        File.WriteAllText(@"test2.txt", text);

        ArrayList filenames = new ArrayList();

        filenames.Add("test0.txt");

        filenames.Add("test1.txt");

        filenames.Add("test2.txt");

​

        CreateZipFile(filenames);

        /*

        using (ZipFile zip = new ZipFile())

        {

            zip.AddFile(@"test.txt");

            zip.AddFile(@"test1.txt");

            zip.AddFile(@"test2.txt");

            zip.Save("MyZipFiles.zip");

        }*/

​

        using (ZipFile zip = ZipFile.Read("MyZipFiles.zip"))

        {

            Console.WriteLine("Extracted files:");

            foreach (ZipEntry e in zip)

            {

                Console.WriteLine(e.FileName);

            }

        }

    }

}