压缩

private void skinButton1_Click(object sender, EventArgs e)
        {
            FilesUploadFor.ZipDirectory(foldertozip.Text,zipedfilename.Text);
            filesUploadFor.DisplaylistboxMsg("压缩完成");
        }

ZipDirectory

  //===================================================压缩用的是库函数
       /// <summary>
       /// 压缩文件夹
       /// </summary>
       /// <param name="folderToZip">需要压缩的文件夹</param>
       /// <param name="zipedFileName">压缩后的Zip完整文件名</param>
        public static void ZipDirectory(string folderToZip, string zipedFileName)
        {
            ZipDirectory(folderToZip, zipedFileName, string.Empty, true, string.Empty, string.Empty, true);
        }
 
 
        /// <summary>
        /// 压缩文件夹
        /// </summary>
        /// <param name="folderToZip">需要压缩的文件夹</param>
        /// <param name="zipedFileName">压缩后的Zip完整文件名（如D:\test.zip）</param>
        /// <param name="isRecurse">如果文件夹下有子文件夹，是否递归压缩</param>
        /// <param name="password">解压时需要提供的密码</param>
        /// <param name="fileRegexFilter">文件过滤正则表达式</param>
        /// <param name="directoryRegexFilter">文件夹过滤正则表达式</param>
        /// <param name="isCreateEmptyDirectories">是否压缩文件中的空文件夹</param>
 
        public static void ZipDirectory(string folderToZip, string zipedFileName, string password, bool isRecurse, string fileRegexFilter, string directoryRegexFilter, bool isCreateEmptyDirectories)
        {
            FastZip fastZip = new FastZip();
            fastZip.CreateEmptyDirectories = isCreateEmptyDirectories;
            fastZip.Password = password;
            fastZip.CreateZip(zipedFileName, folderToZip, isRecurse, fileRegexFilter, directoryRegexFilter);
        }

解压缩

  private void skinButton2_Click(object sender, EventArgs e)
        {
            filesUploadFor.UnZip(zipedfilename.Text,"");
             filesUploadFor.DisplaylistboxMsg("解压缩完成");
        }

UnZip

  //===================================================解压用的是库函数
        /// <summary>  
        /// 功能：解压zip格式的文件。  
        /// </summary>  
        /// <param name="zipFilePath">压缩文件路径</param>  
        /// <param name="unZipDir">解压文件存放路径,为空时默认与压缩文件同一级目录下，跟压缩文件同名的文件夹</param>  
        /// <returns>解压是否成功</returns>  
        public void UnZip(string zipFilePath, string unZipDir)
        {
            if (zipFilePath == string.Empty)
            {
                throw new Exception("压缩文件不能为空！");
            }
            if (!File.Exists(zipFilePath))
            {
                throw new FileNotFoundException("压缩文件不存在！");
            }
            //解压文件夹为空时默认与压缩文件同一级目录下，跟压缩文件同名的文件夹  
            if (unZipDir == string.Empty)
                unZipDir = zipFilePath.Replace(Path.GetFileName(zipFilePath), Path.GetFileNameWithoutExtension(zipFilePath));
            if (!unZipDir.EndsWith("/"))
                unZipDir += "/";
            if (!Directory.Exists(unZipDir))
                Directory.CreateDirectory(unZipDir);
 
            using (var s = new ZipInputStream(File.OpenRead(zipFilePath)))
            {
 
                ZipEntry theEntry;
                while ((theEntry = s.GetNextEntry()) != null)
                {
                    string directoryName = Path.GetDirectoryName(theEntry.Name);
                    string fileName = Path.GetFileName(theEntry.Name);
                    if (!string.IsNullOrEmpty(directoryName))
                    {
                        Directory.CreateDirectory(unZipDir + directoryName);
                    }
                    if (directoryName != null && !directoryName.EndsWith("/"))
                    {
                    }
                    if (fileName != String.Empty)
                    {
                        using (FileStream streamWriter = File.Create(unZipDir + theEntry.Name))
                        {
 
                            int size;
                            byte[] data = new byte[2048];
                            while (true)
                            {
                                size = s.Read(data, 0, data.Length);
                                if (size > 0)
                                {
                                    streamWriter.Write(data, 0, size);
                                }
                                else
                                {
                                    break;
                                }
                            }
                        }
                    }
                }
            }
        }