C#操作zip压缩解压

请下载 ICSharpCode.SharpZipLib.dll 文件引用到项目中  （参考下载地址http://download.csdn.net/download/jingdian14/4522175）

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using ICSharpCode.SharpZipLib.Zip;

namespace GlobalsTech.ZP.Common
{
    public class ZIP
    {
        ///

        /// 压缩文件
        ///

        /// 要压缩的文件
/// 压缩之后的路径
        /// 密码
        ///
        public static 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 ZipFile = null;
            ZipOutputStream ZipStream = null;
            ZipEntry ZipEntry = null;

            bool res = true;

            try
            {
                ZipFile = File.OpenRead(FileToZip);
                byte[] buffer = new byte[ZipFile.Length];
                ZipFile.Read(buffer, 0, buffer.Length);
                ZipFile.Close();

                ZipFile = File.Create(ZipedFile);
                ZipStream = new ZipOutputStream(ZipFile);
                // ZipStream.Password = Password;
                ZipEntry = new ZipEntry(Path.GetFileName(FileToZip));
                ZipStream.PutNextEntry(ZipEntry);
                ZipStream.SetLevel(6);

                ZipStream.Write(buffer, 0, buffer.Length);
            }
            catch
            {
                res = false;
            }
            finally
            {
                if (ZipEntry != null)
                {
                    ZipEntry = null;
                }

                if (ZipStream != null)
                {
                    ZipStream.Finish();
                    ZipStream.Close();
                }

                if (ZipFile != null)
                {
                    ZipFile.Close();
                    ZipFile = null;
                }

                GC.Collect();
                GC.Collect(1);
            }

            return res;
        }




        ///

解压文件

        /// 压缩文件的名称，如：C:\123\123.zip
        /// dir要解压的文件夹路径
        ///
        public static bool UnpackFiles(string file, string dir)
        {
            try
            {
                if (!File.Exists(file))
                    return false;

                dir = dir.Replace("/", "\\");
                if (!dir.EndsWith("\\"))
                    dir += "\\";

                if (!Directory.Exists(dir))
                    Directory.CreateDirectory(dir);

                ZipInputStream s = new ZipInputStream(File.OpenRead(file));
                //s.Password
                ZipEntry theEntry;
                while ((theEntry = s.GetNextEntry()) != null)
                {

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

                    if (directoryName != String.Empty)
                        Directory.CreateDirectory(dir + directoryName);

                    if (fileName != String.Empty)
                    {
                        FileStream streamWriter = File.Create(dir + 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;
                            }
                        }

                        streamWriter.Close();
                    }
                }
                s.Close();
                return true;
            }
            catch (Exception)
            {
                return false;
            }
        }

    }
}