日期:2014-05-17  浏览次数:20959 次

C# /.NET压缩解压文件夹及文件夹里面的子文件、文件夹
最近做一个项目需要压缩,解压文件夹及文件夹里面的子文件夹、文件,在网上找了许多资料,有两种实例:
实例一:
#region 压缩文件
        /// 递归压缩文件夹方法 
        private bool ZipFileDictory(string FolderToZip, ZipOutputStream s, string ParentFolderName)
        {
            bool res = true;
            string[] folders, filenames;
            ZipEntry entry = null;
            FileStream fs = null;
            Crc32 crc = new Crc32();

            try
            {

                //创建当前文件夹
                entry = new ZipEntry(Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip) + "/")); //加上 “/” 才会当成是文件夹创建
                s.PutNextEntry(entry);
                s.Flush();


                //先压缩文件,再递归压缩文件夹 
                filenames = Directory.GetFiles(FolderToZip);
                foreach (string file in filenames)
                {
                    //打开压缩文件
                    fs = File.OpenRead(file);

                    byte[] buffer = new byte[fs.Length];
                    fs.Read(buffer, 0, buffer.Length);
                    entry = new ZipEntry(Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip) + "/" + Path.GetFileName(file)));

                    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, 0, buffer.Length);
                }
            }
            catch
            {
                res = false;
            }
            finally
            {
                if (fs != null)
                {
                    fs.Close();
                    fs = null;
                }
                if (entry != null)
                {
                    entry = null;
                }
                GC.Collect();
                GC.Collect(1);
            }


            folders = Directory.GetDirectories(FolderToZip);
            foreach (string folder in folders)
            {
                if (!ZipFileDictory(folder, s, Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip))))
                {
                    return false;
                }
            }

            return res;
        }

        /// <summary>
        /// 压缩目录
        /// </summary>
        /// <param name="FolderToZip">待压缩的文件夹,全路径格式</param>
        /// <param name="ZipedFile">压缩后的文件名,全路径格式</param>
        /// <param name="Password"></param>
        /// <returns></returns>
        private bool ZipFileDictory(string FolderToZip, string ZipedFile, String Password)
        {
            bool res;
            if (!Directory.Exists(FolderToZip))
            {
                return false;
            }

            ZipOutputStream s = new ZipOutputStream(File.Create(ZipedFile));
            s.SetLevel(6);
            s.Password = Password;

            res = ZipFileDictory(FolderToZip, s, "");

            s.Finish();
            s.Close();

            return res;
        }

        /// <summary>
        /// 压缩文件
        /// </summary>
        /// <param name="FileToZip">要进行压缩的文件名</param>
        /// <param name="ZipedFile">压缩后生成的压缩文件名</param>
        /// <param name="Password"></param>
        /// <returns></returns>
        private bool ZipFile(string FileToZip, string ZipedFile, String Password)
        {
            //如果文件没有找到,则报错
            if (!File.Exists(FileToZip))
            {
                throw new System.IO.FileNotFoundException("指定要压缩的文件: " + FileToZip + " 不存在!");
            }
            //FileStream fs = null;
            FileStream ZipFile = null;
            ZipOutputStream ZipStream = null;
            Zi