c# 压缩文件

 递归实现压缩文件夹和子文件夹。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.IO.Compression;
using System.Collections;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary;

namespace CommonBaseInfo
{
    public class Zip
    {
       

        #region 压缩解压单一文件
        /// <summary>
        /// 压缩单一文件
        /// </summary>
        /// <param name="sourceFile">源文件路径</param>
        /// <param name="destinationFile">目标文件路径</param>
        public static void CompressFile(string sourceFile, string destinationFile)
        {
            if (!File.Exists(sourceFile)) throw new FileNotFoundException();
            using (FileStream sourceStream = new FileStream(sourceFile, FileMode.Open, FileAccess.Read, FileShare.Read))
            {
                byte[] buffer = new byte[sourceStream.Length];
                int checkCounter = sourceStream.Read(buffer, 0, buffer.Length);
                if (checkCounter != buffer.Length) throw new ApplicationException();
                using (FileStream destinationStream = new FileStream(destinationFile, FileMode.OpenOrCreate, FileAccess.Write))
                {
                    using (GZipStream compressedStream = new GZipStream(destinationStream, CompressionMode.Compress, true))
                    {
                        compressedStream.Write(buffer, 0, buffer.Length);
                    }
                }
            }
        }
        public static void CompressFile(byte[] source, string destinationFile)
        {
            using (FileStream destinationStream = new FileStream(destinationFile, FileMode.OpenOrCreate, FileAccess.Write))
            {
                using (GZipStream compressedStream = new GZipStream(destinationStream, CompressionMode.Compress, true))
                {
                    compressedStream.Write(source, 0, source.Length);
                }
            }
        }

        /// <summary>
        /// 解压缩文件
        /// </summary>
        /// <param name="sourceFile">源文件路径</param>
        /// <param name="destinationFile">目标文件路径</param>
        public static void DecompressFile(string sourceFile, string destinationFile)
        {
            if (!File.Exists(sourceFile)) throw new FileNotFoundException();
            using (FileStream sourceStream = new FileStream(sourceFile, FileMode.Open))
            {
                byte[] quartetBuffer = new byte[4];
                int position = (int)sourceStream.Length - 4;
                sourceStream.Position = position;
                sourceStream.Read(quartetBuffer, 0, 4);
                sourceStream.Position = 0;
                int checkLength = BitConverter.ToInt32(quartetBuffer, 0);
                byte[] buffer = new byte[checkLength + 100];
                using (GZipStream decompressedStream = new GZipStream(sourceStream, CompressionMode.Decompress, true))
                {
                    int total = 0;
                    for (int offset = 0; ; )
                    {
                        int bytesRead = decompressedStream.Read(buffer, offset, 100);
                        if (bytesRead == 0) break;
                        offset += bytesRead;
                        total += bytesRead;
                    }
                    using (FileStream destinationStream = new FileStream(destinationFile, FileMode.Create))
                    {
                        destinationStream.Write(buffer, 0, total);
                        destinationStream.Flush();
                    }
                }
            }
        }

        #endregion

        #region 压缩解压文件夹
        /**/
        /// <summary>
        /// 对目标文件夹进行压缩，将压缩结果保存为指定文件
        /// </summary>
        /// <param name="dirPath">目标文件夹</param>
        /// <param name="fileName">压缩文件</param>
        /// 

         public static void CompressFolderP(string dirPath, string fileName)
        {  
             ArrayList list = new ArrayList();
            CompressFolder(dirPath, fileName, dirPath,list);

        }
         public static void CompressFolder(string dirPath, string fileName, string rootdir, ArrayList list)
        {   

       
            foreach (string d in Directory.GetDirectories(dirPath))
            {
                byte[] destBuffer = null;
                string path = d.Replace(rootdir, "");
                SerializeFileInfo sfi = new SerializeFileInfo(d, destBuffer, "0",path);
                list.Add(sfi);
                CompressFolder(d, fileName,rootdir,list);

            }

            foreach (string f in Directory.GetFiles(dirPath))
            {  if ( (File.GetAttributes(f) & FileAttributes.Hidden) != FileAttributes.Hidden)
                 {
                    byte[] destBuffer = File.ReadAllBytes(f);
                    string path = f.Replace(rootdir, "");
                    SerializeFileInfo sfi = new SerializeFileInfo(f, destBuffer, "1", path);
                    list.Add(sfi);
                }
              
            }
        

            IFormatter formatter = new BinaryFormatter();
            using (Stream s = new MemoryStream())
            {
                formatter.Serialize(s, list);
                s.Position = 0;
                CreateCompressFile(s, fileName);
            }
        }
        /**/
        /// <summary>
        /// 对目标压缩文件解压缩，将内容解压缩到指定文件夹
        /// </summary>
        /// <param name="fileName">压缩文件</param>
        /// <param name="dirPath">解压缩目录</param>
        /// 

        public static void DeCompressFolder(string fileName, string dirPath)
        {

            if (!Directory.Exists(dirPath))
            {
                Directory.CreateDirectory(dirPath);
            }

            using (Stream source = File.OpenRead(fileName))
            {
                using (Stream destination = new MemoryStream())
                {
                    using (GZipStream input = new GZipStream(source, CompressionMode.Decompress, true))
                    {
                        byte[] bytes = new byte[4096];
                        int n;
                        while ((n = input.Read(bytes, 0, bytes.Length)) != 0)
                        {
                            destination.Write(bytes, 0, n);
                        }
                    }
                    destination.Flush();
                    destination.Position = 0;
                    DeSerializeFiles(destination, dirPath);
                }
            }
        }
        private static void DeSerializeFiles(Stream s, string dirPath)
        {
            BinaryFormatter b = new BinaryFormatter();
            ArrayList list = (ArrayList)b.Deserialize(s);
            foreach (SerializeFileInfo f in list)
            {
                if (f.Fileflag == "1")
                {
                    string newName = dirPath + f.Filedirnane;
                    using (FileStream fs = new FileStream(newName, FileMode.Create, FileAccess.Write))
                    {
                        fs.Write(f.FileBuffer, 0, f.FileBuffer.Length);
                        fs.Close();
                    }
                }
                else
                {
                    if (!Directory.Exists(dirPath+f.Filedirnane))
                    {
                        Directory.CreateDirectory(dirPath + f.Filedirnane);
                    }


                }
            }
        }
        private static void CreateCompressFile(Stream source, string destinationName)
        {
            using (Stream destination = new FileStream(destinationName, FileMode.Create, FileAccess.Write))
            {
                using (GZipStream output = new GZipStream(destination, CompressionMode.Compress))
                {
                    byte[] bytes = new byte[4096];
                    int n;
                    while ((n = source.Read(bytes, 0, bytes.Length)) != 0)
                    {
                        output.Write(bytes, 0, n);
                    }
                }
            }
        }

        #endregion

 
        [Serializable]
        class SerializeFileInfo
        {
            public SerializeFileInfo(string name, byte[] buffer,string flag,string dirname)
            {
                fileName = name;
                fileBuffer = buffer;
                fileflag = flag;
                filedirnane = dirname;
            }
            string fileflag;
            string filedirnane;
            string fileName;

            public string Filedirnane
            {
                get
                {
                    return filedirnane;
                }
            }
            public string Fileflag
            {
                get
                {
                    return fileflag;
                }
            }

            public string FileName
            {
                get
                {
                    return fileName;
                }
            }
            byte[] fileBuffer;
            public byte[] FileBuffer
            {
                get
                {
                    return fileBuffer;
                }
            }
        }
    }
}

 CommonBaseInfo.Zip.CompressFolderP(@"c:debug", @"c:debug.zip");
CommonBaseInfo.Zip.DeCompressFolder(@"c:debug.zip", @"c:debug");