压缩多个文件

首先需要ICSharpCode.SharpZipLib.dll

新建FileCompression.cs文件

using System;using System.Collections.Generic;using System.IO;using System.Threading;using ICSharpCode.SharpZipLib.Zip;namespace Lib{    /// <summary>    /// 文件压缩、解压缩    /// </summary>    public class FileCompression    {        /// <summary>        /// 构造函数        /// </summary>        public FileCompression()        {        }        #region 加密、压缩文件        /// <summary>        /// 压缩文件        /// </summary>        /// <param name="fileNames">要打包的文件列表</param>        /// <param name="GzipFileName">目标文件名</param>        /// <param name="CompressionLevel">压缩品质级别（0~9）</param>        /// <param name="SleepTimer">休眠时间（单位毫秒）</param>             public static void Compress(List<FileInfo> fileNames, string GzipFileName, int CompressionLevel, int SleepTimer)        {            ZipOutputStream s = new ZipOutputStream(File.Create(GzipFileName));            try            {                s.SetLevel(CompressionLevel);   //0 - store only to 9 - means best compression                foreach (FileInfo file in fileNames)                {                    FileStream fs = null;                    try                    {                        fs = file.Open(FileMode.Open, FileAccess.ReadWrite);                    }                    catch                    { continue; }                    //  方法二，将文件分批读入缓冲区                    byte[] data = new byte[2048];                    int size = 2048;                    ZipEntry entry = new ZipEntry(Path.GetFileName(file.Name));                    entry.DateTime = (file.CreationTime > file.LastWriteTime ? file.LastWriteTime : file.CreationTime);                    s.PutNextEntry(entry);                    while (true)                    {                        size = fs.Read(data, 0, size);                        if (size <= 0) break;                        s.Write(data, 0, size);                    }                    fs.Close();                    Thread.Sleep(SleepTimer);                }            }            finally            {                s.Finish();                s.Close();            }        }        #endregion        #region 解密、解压缩文件        /// <summary>        /// 解压缩文件        /// </summary>        /// <param name="GzipFile">压缩包文件名</param>        /// <param name="targetPath">解压缩目标路径</param>               public static void Decompress(string GzipFile, string targetPath)        {            //string directoryName = Path.GetDirectoryName(targetPath + "\\") + "\\";            string directoryName = targetPath;            if (!Directory.Exists(directoryName)) Directory.CreateDirectory(directoryName);//生成解压目录            string CurrentDirectory = directoryName;            byte[] data = new byte[2048];            int size = 2048;            ZipEntry theEntry = null;            using (ZipInputStream s = new ZipInputStream(File.OpenRead(GzipFile)))            {                while ((theEntry = s.GetNextEntry()) != null)                {                    if (theEntry.IsDirectory)                    {// 该结点是目录                        if (!Directory.Exists(CurrentDirectory + theEntry.Name)) Directory.CreateDirectory(CurrentDirectory + theEntry.Name);                    }                    else                    {                        if (theEntry.Name != String.Empty)                        {                            //解压文件到指定的目录                            using (FileStream streamWriter = File.Create(CurrentDirectory + theEntry.Name))                            {                                while (true)                                {                                    size = s.Read(data, 0, data.Length);                                    if (size <= 0) break;                                    streamWriter.Write(data, 0, size);                                }                                streamWriter.Close();                            }                        }                    }                }                s.Close();            }        }        #endregion    }}

使用：

    protected void butDerive_Click(object sender, EventArgs e)    {        //先压缩文件        string checkboxNameValues = Request.Form["checkboxImg"];        if (checkboxNameValues != "" && checkboxNameValues != null)        {            string[] values = checkboxNameValues.Split(',');            List<FileInfo> fileList = new List<FileInfo>();            for (int i = 0; i < values.Length; i++)            {                string path = Server.MapPath(values[i]);                FileInfo fi = new FileInfo(path);                fileList.Add(fi);            }            if (!Directory.Exists(Server.MapPath("~/ZipFile/")))            {                Directory.CreateDirectory(Server.MapPath("~/ZipFile/"));            }                        //调用方法            string zipFilePath = "ZipFile/" + DateTime.Now.ToString("yyyyMMddHHmmssffff") + ".zip";            string zipServerFilepath = Server.MapPath("~/" + zipFilePath);            Lib.FileCompression.Compress(fileList, zipServerFilepath, 5, 5);        }    }

 

素材资源：http://download.csdn.net/detail/yishide_weixiao/5000146