压缩文件夹

源码如下

using System;

using System.Data;

using System.Configuration;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.IO;

using ICSharpCode.SharpZipLib.Checksums;

using ICSharpCode.SharpZipLib.Zip;

using ICSharpCode.SharpZipLib.GZip;

///

/// ZipFloClass 的摘要说明

///

public class ZipFloClass

{

    public void ZipFile(string strFile, string strZip)

    {

        if (strFile[strFile.Length - ] != Path.DirectorySeparatorChar)

            strFile += Path.DirectorySeparatorChar;

        ZipOutputStream s = new ZipOutputStream(File.Create(strZip));

        s.SetLevel(); // 0 - store only to 9 - means best compression

        zip(strFile, s, strFile);

        s.Finish();

        s.Close();

    }

    private void zip(string strFile, ZipOutputStream s, string staticFile)

    {

        if (strFile[strFile.Length - ] != Path.DirectorySeparatorChar) strFile += Path.DirectorySeparatorChar;

        Crc32 crc = new Crc32();

        string[] filenames = Directory.GetFileSystemEntries(strFile);

        foreach (string file in filenames)

        {

            if (Directory.Exists(file))

            {

                zip(file, s, staticFile);

            }

            else // 否则直接压缩文件

            {

                //打开压缩文件

                FileStream fs = File.OpenRead(file);

                byte[] buffer = new byte[fs.Length];

                fs.Read(buffer, , buffer.Length);

                string tempfile = file.Substring(staticFile.LastIndexOf("\\") + );

                ZipEntry entry = new ZipEntry(tempfile);

                entry.DateTime = DateTime.Now;

                entry.Size = fs.Length;

                fs.Close();

                crc.Reset();

                crc.Update(buffer);

                entry.Crc = crc.Value;

                s.PutNextEntry(entry);

                s.Write(buffer, , buffer.Length);

            }

        }

    }

}

解压文件夹

using System;

using System.Data;

using System.Web;

using System.Text;

using System.Collections;

using System.IO;

using System.Diagnostics;

using System.Runtime.Serialization.Formatters.Binary;

using ICSharpCode.SharpZipLib.BZip2;

using ICSharpCode.SharpZipLib.Zip;

using ICSharpCode.SharpZipLib.Zip.Compression;

using ICSharpCode.SharpZipLib.Zip.Compression.Streams;

using ICSharpCode.SharpZipLib.GZip;

using ICSharpCode.SharpZipLib.Checksums;

///

/// UnZipFloClass 的摘要说明

///

public class UnZipFloClass

{

    public string unZipFile(string TargetFile, string fileDir)

    {

        string rootFile = " ";

        try

        {

            //读取压缩文件(zip文件),准备解压缩

            ZipInputStream s = new ZipInputStream(File.OpenRead(TargetFile.Trim()));

            ZipEntry theEntry;

            string path = fileDir;

            //解压出来的文件保存的路径

            string rootDir = " ";

            //根目录下的第一个子文件夹的名称

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

            {

                rootDir = Path.GetDirectoryName(theEntry.Name);

                //得到根目录下的第一级子文件夹的名称

                if (rootDir.IndexOf("\\") >= )

                {

                    rootDir = rootDir.Substring(, rootDir.IndexOf("\\") + );

                }

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

                //根目录下的第一级子文件夹的下的文件夹的名称

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

                //根目录下的文件名称

                if (dir != " " )

                    //创建根目录下的子文件夹,不限制级别

                {

                    if (!Directory.Exists(fileDir + "\\" + dir))

                    {

                        path = fileDir + "\\" + dir;

                        //在指定的路径创建文件夹

                        Directory.CreateDirectory(path);

                    }

                }

                else if (dir == " " && fileName != "")

                    //根目录下的文件

                {

                    path = fileDir;

                    rootFile = fileName;

                }

                else if (dir != " " && fileName != "")

                    //根目录下的第一级子文件夹下的文件

                {

                    if (dir.IndexOf("\\") > )

                        //指定文件保存的路径

                    {

                        path = fileDir + "\\" + dir;

                    }

                }

                if (dir == rootDir)

                    //判断是不是需要保存在根目录下的文件

                {

                    path = fileDir + "\\" + rootDir;

                }

                //以下为解压缩zip文件的基本步骤

                //基本思路就是遍历压缩文件里的所有文件,创建一个相同的文件。

                if (fileName != String.Empty)

                {

                    FileStream streamWriter = File.Create(path + "\\" + fileName);

                    int size = ;

                    byte[] data = new byte[];

                    while (true)

                    {

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

                        if (size > )

                        {

                            streamWriter.Write(data, , size);

                        }

                        else

                        {

                            break;

                        }

                    }

                    streamWriter.Close();

                }

            }

            s.Close();

            return rootFile;

        }

        catch (Exception ex)

        {

            return "1; " + ex.Message;

        }

    }

}

/// <summary>

        /// 压缩

        /// </summary>

        /// <param name="sender"></param>

        /// <param name="e"></param>

        private void button1_Click(object sender, EventArgs e)

        {

            string[] FileProperties = new string[];

            FileProperties[] = "D:\\Debug\\";//待压缩文件目录

            //Debug2=>目录必须存在(可以改进程序)

            FileProperties[] = "D:\\Debug2\\a.zip";  //压缩后的目标文件

            ZipFloClass Zc = new ZipFloClass();

            Zc.ZipFile(FileProperties[], FileProperties[]);

        }

        /// <summary>

        /// 解压

        /// </summary>

        /// <param name="sender"></param>

        /// <param name="e"></param>

        private void button2_Click(object sender, EventArgs e)

        {

            string[] FileProperties = new string[];

            FileProperties[] = "D:\\Debug2\\a.zip";//待解压的文件

            //=>Debug3目录可以不用存在

            FileProperties[] = "D:\\Debug3\\";//解压后放置的目标目录

            UnZipFloClass UnZc = new UnZipFloClass();

            UnZc.unZipFile(FileProperties[], FileProperties[]);

        }

using (Stream stream = File.OpenRead(@"C:\Code\sharpcompress.rar"))

            {

                var reader = ReaderFactory.Open(stream);

                while (reader.MoveToNextEntry())

                {

                    if (!reader.Entry.IsDirectory)

                    {

                        reader.WriteEntryToDirectory(@"C:\temp");

                    }

                }

            }