c# 第三方解压sharpziplib

using System;using System.Collections.Generic;using System.Linq;using System.Text;using ICSharpCode.SharpZipLib.Zip;  //开源工具using System.IO; namespace Package{    class Class1    {        #region 加压解压方法        /// <summary>           /// 功能：压缩文件（暂时只压缩文件夹下一级目录中的文件，文件夹及其子级被忽略）           /// </summary>           /// <param name="dirPath">被压缩的文件夹夹路径</param>           /// <param name="zipFilePath">生成压缩文件的路径，为空则默认与被压缩文件夹同一级目录，名称为：文件夹名+.zip</param>           /// <param name="err">出错信息</param>           /// <returns>是否压缩成功</returns>           public bool ZipFile(string dirPath, string zipFilePath, out string err)        {            err = "";            if (dirPath == string.Empty)            {                err = "要压缩的文件夹不能为空！";                return false;            }            if (!Directory.Exists(dirPath))            {                err = "要压缩的文件夹不存在！";                return false;            }            //压缩文件名为空时使用文件夹名＋.zip               if (zipFilePath == string.Empty)            {                if (dirPath.EndsWith("\\"))                {                    dirPath = dirPath.Substring(0, dirPath.Length - 1);                }                zipFilePath = dirPath + ".zip";            }            try            {                string[] filenames = Directory.GetFiles(dirPath);                using (ZipOutputStream s = new ZipOutputStream(File.Create(zipFilePath)))                {                    s.SetLevel(9);                    byte[] buffer = new byte[4096];                    foreach (string file in filenames)                    {                        ZipEntry entry = new ZipEntry(Path.GetFileName(file));                        entry.DateTime = DateTime.Now;                        s.PutNextEntry(entry);                        using (FileStream fs = File.OpenRead(file))                        {                            int sourceBytes;                            do                            {                                sourceBytes = fs.Read(buffer, 0, buffer.Length);                                s.Write(buffer, 0, sourceBytes);                            } while (sourceBytes > 0);                        }                    }                    s.Finish();                    s.Close();                }            }            catch (Exception ex)            {                err = ex.Message;                return false;            }            return true;        }        /// <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>           /// <param name="err">出错信息</param>           /// <returns>解压是否成功</returns>           public bool UnZipFile(string zipFilePath, string unZipDir, out string err)        {            err = "";            if (zipFilePath == string.Empty)            {                err = "压缩文件不能为空！";                return false;            }            if (!File.Exists(zipFilePath))            {                err = "压缩文件不存在！";                return false;            }            //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);            try            {                using (ZipInputStream 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 (directoryName.Length > 0)                        {                            Directory.CreateDirectory(unZipDir + directoryName);                        }                        if (!directoryName.EndsWith("\\"))                            directoryName += "\\";                        if (fileName != String.Empty)                        {                            using (FileStream streamWriter = File.Create(unZipDir + theEntry.Name))                            {                                int size = 2048;                                byte[] data = new byte[2048];                                while (true)                                {                                    size = s.Read(data, 0, data.Length);                                    if (size > 0)                                    {                                        streamWriter.Write(data, 0, size);                                    }                                    else                                    {                                        break;                                    }                                }                            }                        }                    }//while                   }            }            catch (Exception ex)            {                err = ex.Message;                return false;            }            return true;        }//解压结束          #endregion    }}

 附：实例地址：http://download.csdn.net/detail/json1204/4381944