即粘即用的ICSharpCode快速解压缩帮助类2015-12-21 cnblogs _tom在项目中往往使用解压缩公共类，解压缩之后的文件占用空间小，也可进行加密，往往可以用于客户端上传附件，打包输出主程序等，其中的好处就不多说了，最近着手的项目中多次使用到了解压缩方法，现较流行的就是ICSharpCode，稳定，高效，是一个不错的解压缩封装类。通过InterNET和个人的整理，现将该类分享出来，作为资源分享给大家，这样就可以不用在埋头苦脑的在InterNET上苦苦寻找了，废话不多说，上代码：
using System;using System.Collections.Generic;using System.IO;using System.Security.Cryptography;using ICSharpCode.SharpZipLib.Core;using ICSharpCode.SharpZipLib.Zip;namespace Helper{public class Utily{/// <summary>/// 快速压缩/// </summary>/// <param name="filesPath">需要压缩的文件夹路径</param>/// <param name="zipFilePath">输出路径</param>/// <param name="pwd">密码，可不写</param>/// <param name="fileFilter">过滤条件</param>/// <param name="CreateEmptyDirectories">是否压缩空文件夹</param>/// <param name="progressFun">处理进程</param>/// <param name="seconds">触发的秒数</param>/// <param name="completeFun">完成事件</param>public static void CreateZipFile（string filesPath, string zipFilePath, string pwd, string fileFilter, bool CreateEmptyDirectories, ProgressHandler progressFun, double seconds, CompletedFileHandler completeFun）{FastZipEvents events = new FastZipEvents（）;if （progressFun ！= null）{events.Progress = progressFun;events.ProgressInterval = TimeSpan.FromSeconds（seconds）;}if （completeFun ！= null）{events.CompletedFile = completeFun;}FastZip zip = new FastZip（events）;zip.CreateEmptyDirectories = CreateEmptyDirectories;if （！string.IsNullOrEmpty（pwd））zip.Password = pwd;zip.UseZip64 = UseZip64.On;zip.RestoreAttributesOnExtract = true;zip.RestoreDateTimeOnExtract = true;zip.CreateZip（zipFilePath, filesPath, true, fileFilter）;}/// <summary>/// 快速解压/// </summary>/// <param name="zipFilePath">压缩文件路径</param>/// <param name="extractPath">解压路径</param>/// <param name="pwd">压缩密码</param>/// <param name="progressFun">进程</param>/// <param name="seconds">触发时间</param>public static void ExtractZipFile（string zipFilePath, string extractPath, string pwd, ProgressHandler progressFun, double seconds）{FastZipEvents events = new FastZipEvents（）;if （progressFun ！= null）{events.Progress = progressFun;events.ProgressInterval = TimeSpan.FromSeconds（seconds）;}FastZip zip = new FastZip（events）;zip.CreateEmptyDirectories = true;if （！string.IsNullOrEmpty（pwd））zip.Password = pwd;zip.UseZip64 = UseZip64.On;zip.RestoreAttributesOnExtract = true;zip.RestoreDateTimeOnExtract = true;zip.ExtractZip（zipFilePath, extractPath, FastZip.Overwrite.Always, null, "", "", true）;}/// <summary>/// 快速解压/// </summary>/// <param name="zipFilePath">压缩文件路径</param>/// <param name="extractPath">解压路径</param>/// <param name="pwd">密码</param>/// <param name="progressFun">进程</param>/// <param name="seconds">触发时间</param>/// <param name="completeFun">压缩过程中执行的函数</param>public static void ExtractZipFile（string zipFilePath, string extractPath, string pwd, ProgressHandler progressFun, double seconds, CompletedFileHandler completeFun）{FastZipEvents events = new FastZipEvents（）;if （progressFun ！= null）{events.Progress = progressFun;events.ProgressInterval = TimeSpan.FromSeconds（seconds）;}if （completeFun ！= null）{events.CompletedFile = completeFun;}FastZip zip = new FastZip（events）;zip.CreateEmptyDirectories = true;if （！string.IsNullOrEmpty（pwd））zip.Password = pwd;zip.UseZip64 = UseZip64.On;zip.RestoreAttributesOnExtract = true;zip.RestoreDateTimeOnExtract = true;zip.ExtractZip（zipFilePath, extractPath, FastZip.Overwrite.Always, null, "", "", true）;}/// <summary>/// 获得压缩包内原文件总大小/// </summary>/// <param name="fileName"></param>/// <param name="fileFilter"></param>/// <param name="directoryFilter"></param>/// <returns></returns>public static long GetZipFileSize（string fileName, string fileFilter, string directoryFilter）{long b = 0;using （ZipFile zipFile = new ZipFile（fileName））{PathFilter localFileFilter = new PathFilter（fileFilter）;PathFilter localDirFilter = new PathFilter（directoryFilter）;if （zipFile.Count == 0）{return 0;}for （int i = 0; i < zipFile.Count; ++i）{ZipEntry e = zipFile[i];if （e.IsFile）{string path = Path.GetDirectoryName（e.Name）;if （localDirFilter.IsMatch（path））{if （localFileFilter.IsMatch（Path.GetFileName（e.Name）））{b += e.Size;}}}}}return b;}/// <summary>/// 获得MD5校验码/// </summary>/// <param name="filepath"></param>/// <returns></returns>public static string GetMD5（string filepath）{string returnStr = "";FileStream fs = new FileStream（filepath, FileMode.Open, FileAccess.Read）;MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider（）;byte[] md5byte = md5.ComputeHash（fs）;int i, j;foreach （byte b in md5byte）{i = Convert.ToInt32（b）;j = i >> 4;returnStr += Convert.ToString（j, 16）;j = （（i << 4） & 0x00ff） >> 4;returnStr += Convert.ToString（j, 16）;}fs.Dispose（）;return returnStr;}/// <summary>/// 解压缩特定文件名的文件/// </summary>/// <param name="path">文件路径</param>/// <param name="addres">解压缩路径</param>////// <param name="zipFileName">文件名称</param>/// <param name="pwd">解压缩包密码</param>public static void ZipToFile（string path, string addres, string zipFileName, string pwd）{ZipInputStream ZipStream = new ZipInputStream（System.IO.File.OpenRead（path））;if （！string.IsNullOrEmpty（pwd））ZipStream.Password = pwd;ZipEntry fileEntry;while （（fileEntry = ZipStream.GetNextEntry（）） ！= null）{string filename = Path.GetFileName（fileEntry.Name）;if （filename == zipFileName）{filename = addres + "\" + filename;FileStream streamWriter = System.IO.File.Create（filename）;int size = （int）fileEntry.Size;byte[] buffer = new byte[size];size = ZipStream.Read（buffer, 0, size）;streamWriter.Write（buffer, 0, size）;streamWriter.Close（）;}}ZipStream.Close（）;}}}该类能够满足基本常用解压缩的方法了，不过现比较流行的应该是7z压缩，这个也在研究中，以上代码若有不正确的地方，也请各位大牛指正。至于ICSharpCode的DLL文件，网上能够下载的地方也很多，我也就不在给出下载地址了。温馨提醒：在引用ICSharpCode时记的在调用此类方法的类库或应用程序上也要引用ICSharpCode，否则会产生错误。
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