C# zip/unzip with ICSharpCode.SharpZipLib

 

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using System;

using System.Collections.Generic;

using System.Text;

using System.IO;

using ICSharpCode.SharpZipLib.Zip;

using System.Diagnostics;

using ICSharpCode.SharpZipLib.Core;





namespace SKPaySlip

{



    public class ZipHelper

    {



        public static void CreateZipFile(string filesPath, string zipFilePath)

        {



            if (!Directory.Exists(filesPath))

            {

                Console.WriteLine("Cannot find directory '{0}'", filesPath);

                return;

            }







            try

            {

                string[] filenames = Directory.GetFiles(filesPath);

                using (ZipOutputStream s = new ZipOutputStream(File.Create(zipFilePath)))

                {

                    s.SetLevel(9); // 压缩级别 0-9

                    //s.Password = "123"; //Zip压缩文件密码

                    byte[] buffer = new byte[4096]; //缓冲区大小

                    foreach (string file in filenames)

                    {

                        ZipEntry entry = new ZipEntry(Path.GetFileName(file));

                        entry.DateTime = DateTime.Now;

                        s.PutNextEntry(entry);

                        using (FileStream fs = File.OpenRead(file))

                        {

                            int sourceBytes;

                            do

                            {

                                sourceBytes = fs.Read(buffer, 0, buffer.Length);

                                s.Write(buffer, 0, sourceBytes);

                            } while (sourceBytes > 0);

                        }

                    }

                    s.Finish();

                    s.Close();

                }

            }

            catch (Exception ex)

            {

                Console.WriteLine("Exception during processing {0}", ex);

            }

        }





        public static void UnZipFile(string zipFilePath, string outDir)

        {

            if (string.IsNullOrEmpty(outDir))

            {

                outDir = "";

            }

            else

            {

                if (!outDir.EndsWith(@"\"))

                {

                    outDir = outDir + @"\";

                }

            }

            if (!File.Exists(zipFilePath))

            {



                Console.WriteLine("Cannot find file '{0}'", zipFilePath);

                return;

            }







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

            {

                ZipEntry theEntry;

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

                {

                    Console.WriteLine(theEntry.Name);

                    string directoryName = Path.GetDirectoryName(theEntry.Name);

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

                    // create directory

                    if (directoryName.Length > 0)

                    {

                        Directory.CreateDirectory(directoryName);

                    }

                    if (fileName != String.Empty)

                    {



                        using (FileStream streamWriter = File.Create(outDir + 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;

                                }

                            }

                        }

                    }

                }

            }

        }









    }







}