using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Diagnostics;
using ICSharpCode.SharpZipLib;
using ICSharpCode.SharpZipLib.Zip;
using ICSharpCode.SharpZipLib.Checksums;
using ICSharpCode.SharpZipLib.Core;namespace ZipOneCode.ZipProvider
{public class ZipHelper{/// <summary>/// 压缩文件/// </summary>/// <param name="sourceFilePath"></param>/// <param name="destinationZipFilePath"></param>public static void CreateZip(string sourceFilePath, string destinationZipFilePath){if (sourceFilePath[sourceFilePath.Length - 1] != System.IO.Path.DirectorySeparatorChar)sourceFilePath += System.IO.Path.DirectorySeparatorChar;ZipOutputStream zipStream = new ZipOutputStream(File.Create(destinationZipFilePath));zipStream.SetLevel(6);  // 压缩级别 0-9CreateZipFiles(sourceFilePath, zipStream, sourceFilePath);zipStream.Finish();zipStream.Close();}/// <summary>/// 递归压缩文件/// </summary>/// <param name="sourceFilePath">待压缩的文件或文件夹路径</param>/// <param name="zipStream">打包结果的zip文件路径（类似 D:\WorkSpace\a.zip）,全路径包括文件名和.zip扩展名</param>/// <param name="staticFile"></param>private static void CreateZipFiles(string sourceFilePath, ZipOutputStream zipStream, string staticFile){Crc32 crc = new Crc32();string[] filesArray = Directory.GetFileSystemEntries(sourceFilePath);foreach (string file in filesArray){if (Directory.Exists(file))                     //如果当前是文件夹，递归{CreateZipFiles(file, zipStream, staticFile);}else                                            //如果是文件，开始压缩{FileStream fileStream = File.OpenRead(file);byte[] buffer = new byte[fileStream.Length];fileStream.Read(buffer, 0, buffer.Length);string tempFile = file.Substring(staticFile.LastIndexOf("\\") + 1);ZipEntry entry = new ZipEntry(tempFile);entry.DateTime = DateTime.Now;entry.Size = fileStream.Length;fileStream.Close();crc.Reset();crc.Update(buffer);entry.Crc = crc.Value;zipStream.PutNextEntry(entry);zipStream.Write(buffer, 0, buffer.Length);}}}}
}