ICSharpCode.SharpZipLib 压缩、解压文件 附源码

http://www.icsharpcode.net/opensource/sharpziplib/ 有SharpZiplib的最新版本,本文使用的版本为0.86.0.518,支持Zip, GZip, BZip2 和Tar格式

我们需要dll 在官网上也有。

好了,深入的大家还要多多研究,今天我们简单介绍一下 简单的 单文件、文件夹的压缩和解压

一、引入ICSharpCode.SharpZipLib

我们新建个帮助类 ZipHelper.cs  然后 添加 dll 引用 

二、添加完dll引用之后 我们 需要添加 这几个Using引用

1 using ICSharpCode.SharpZipLib.Checksums; 
2 using ICSharpCode.SharpZipLib.Zip; 3 using System;4 using System.IO;

三、压缩单个文件

这里我添加了几个参数 大家可以根据自己的需要 修改一下 

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 1 /// <summary>
 2         /// ZIP:压缩单个文件  3 /// add yuangang by 2016-06-13  4 /// </summary>  5 /// <param name="FileToZip">需要压缩的文件(绝对路径)</param>  6 /// <param name="ZipedPath">压缩后的文件路径(绝对路径)</param>  7 /// <param name="ZipedFileName">压缩后的文件名称(文件名,默认 同源文件同名)</param>  8 /// <param name="CompressionLevel">压缩等级(0 无 - 9 最高,默认 5)</param>  9 /// <param name="BlockSize">缓存大小(每次写入文件大小,默认 2048)</param> 10 /// <param name="IsEncrypt">是否加密(默认 加密)</param> 11 public static void ZipFile(string FileToZip, string ZipedPath, string ZipedFileName = "", int CompressionLevel = 5, int BlockSize = 2048, bool IsEncrypt = true) 12  { 13 //如果文件没有找到,则报错 14 if (!System.IO.File.Exists(FileToZip)) 15  { 16 throw new System.IO.FileNotFoundException("指定要压缩的文件: " + FileToZip + " 不存在!"); 17  } 18 19 //文件名称(默认同源文件名称相同) 20 string ZipFileName = string.IsNullOrEmpty(ZipedFileName) ? ZipedPath + "\\" + new FileInfo(FileToZip).Name.Substring(0, new FileInfo(FileToZip).Name.LastIndexOf('.')) + ".zip" : ZipedPath + "\\" + ZipedFileName + ".zip"; 21 22 using (System.IO.FileStream ZipFile = System.IO.File.Create(ZipFileName)) 23  { 24 using (ZipOutputStream ZipStream = new ZipOutputStream(ZipFile)) 25  { 26 using (System.IO.FileStream StreamToZip = new System.IO.FileStream(FileToZip, System.IO.FileMode.Open, System.IO.FileAccess.Read)) 27  { 28 string fileName = FileToZip.Substring(FileToZip.LastIndexOf("\\") + 1); 29 30 ZipEntry ZipEntry = new ZipEntry(fileName); 31 32 if (IsEncrypt) 33  { 34 //压缩文件加密 35 ZipStream.Password = “123”; 36  } 37 38  ZipStream.PutNextEntry(ZipEntry); 39 40 //设置压缩级别 41  ZipStream.SetLevel(CompressionLevel); 42 43 //缓存大小 44 byte[] buffer = new byte[BlockSize]; 45 46 int sizeRead = 0; 47 48 try 49  { 50 do 51  { 52 sizeRead = StreamToZip.Read(buffer, 0, buffer.Length); 53 ZipStream.Write(buffer, 0, sizeRead); 54  } 55 while (sizeRead > 0); 56  } 57 catch (System.Exception ex) 58  { 59 throw ex; 60  } 61 62  StreamToZip.Close(); 63  } 64 65  ZipStream.Finish(); 66  ZipStream.Close(); 67  } 68 69  ZipFile.Close(); 70  } 71 }
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四、压缩文件夹

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 1 /// <summary>
 2         /// ZIP:压缩文件夹  3 /// add yuangang by 2016-06-13  4 /// </summary>  5 /// <param name="DirectoryToZip">需要压缩的文件夹(绝对路径)</param>  6 /// <param name="ZipedPath">压缩后的文件路径(绝对路径)</param>  7 /// <param name="ZipedFileName">压缩后的文件名称(文件名,默认 同源文件夹同名)</param>  8 /// <param name="IsEncrypt">是否加密(默认 加密)</param>  9 public static void ZipDirectory(string DirectoryToZip, string ZipedPath, string ZipedFileName = "", bool IsEncrypt = true) 10  { 11 //如果目录不存在,则报错 12 if (!System.IO.Directory.Exists(DirectoryToZip)) 13  { 14 throw new System.IO.FileNotFoundException("指定的目录: " + DirectoryToZip + " 不存在!"); 15  } 16 17 //文件名称(默认同源文件名称相同) 18 string ZipFileName = string.IsNullOrEmpty(ZipedFileName) ? ZipedPath + "\\" + new DirectoryInfo(DirectoryToZip).Name + ".zip" : ZipedPath + "\\" + ZipedFileName + ".zip"; 19 20 using (System.IO.FileStream ZipFile = System.IO.File.Create(ZipFileName)) 21  { 22 using (ZipOutputStream s = new ZipOutputStream(ZipFile)) 23  { 24 if (IsEncrypt) 25  { 26 //压缩文件加密 27 s.Password = “123”; 28  } 29 ZipSetp(DirectoryToZip, s, ""); 30  } 31  } 32  } 33 /// <summary> 34 /// 递归遍历目录 35 /// add yuangang by 2016-06-13 36 /// </summary> 37 private static void ZipSetp(string strDirectory, ZipOutputStream s, string parentPath) 38  { 39 if (strDirectory[strDirectory.Length - 1] != Path.DirectorySeparatorChar) 40  { 41 strDirectory += Path.DirectorySeparatorChar; 42  } 43 Crc32 crc = new Crc32(); 44 45 string[] filenames = Directory.GetFileSystemEntries(strDirectory); 46 47 foreach (string file in filenames)// 遍历所有的文件和目录 48  { 49 50 if (Directory.Exists(file))// 先当作目录处理如果存在这个目录就递归Copy该目录下面的文件 51  { 52 string pPath = parentPath; 53 pPath += file.Substring(file.LastIndexOf("\\") + 1); 54 pPath += "\\"; 55  ZipSetp(file, s, pPath); 56  } 57 58 else // 否则直接压缩文件 59  { 60 //打开压缩文件 61 using (FileStream fs = File.OpenRead(file)) 62  { 63 64 byte[] buffer = new byte[fs.Length]; 65 fs.Read(buffer, 0, buffer.Length); 66 67 string fileName = parentPath + file.Substring(file.LastIndexOf("\\") + 1); 68 ZipEntry entry = new ZipEntry(fileName); 69 70 entry.DateTime = DateTime.Now; 71 entry.Size = fs.Length; 72 73  fs.Close(); 74 75  crc.Reset(); 76  crc.Update(buffer); 77 78 entry.Crc = crc.Value; 79  s.PutNextEntry(entry); 80 81 s.Write(buffer, 0, buffer.Length); 82  } 83  } 84  } 85 }
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五、解压一个ZIP文件

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 1  /// <summary>
 2         /// ZIP:解压一个zip文件  3 /// add yuangang by 2016-06-13  4 /// </summary>  5 /// <param name="ZipFile">需要解压的Zip文件(绝对路径)</param>  6 /// <param name="TargetDirectory">解压到的目录</param>  7 /// <param name="Password">解压密码</param>  8 /// <param name="OverWrite">是否覆盖已存在的文件</param>  9 public static void UnZip(string ZipFile, string TargetDirectory, string Password, bool OverWrite = true) 10  { 11 //如果解压到的目录不存在,则报错 12 if (!System.IO.Directory.Exists(TargetDirectory)) 13  { 14 throw new System.IO.FileNotFoundException("指定的目录: " + TargetDirectory + " 不存在!"); 15  } 16 //目录结尾 17 if (!TargetDirectory.EndsWith("\\")) { TargetDirectory = TargetDirectory + "\\"; } 18 19 using (ZipInputStream zipfiles = new ZipInputStream(File.OpenRead(ZipFile))) 20  { 21 zipfiles.Password = Password; 22  ZipEntry theEntry; 23 24 while ((theEntry = zipfiles.GetNextEntry()) != null) 25  { 26 string directoryName = ""; 27 string pathToZip = ""; 28 pathToZip = theEntry.Name; 29 30 if (pathToZip != "") 31 directoryName = Path.GetDirectoryName(pathToZip) + "\\"; 32 33 string fileName = Path.GetFileName(pathToZip); 34 35 Directory.CreateDirectory(TargetDirectory + directoryName); 36 37 if (fileName != "") 38  { 39 if ((File.Exists(TargetDirectory + directoryName + fileName) && OverWrite) || (!File.Exists(TargetDirectory + directoryName + fileName))) 40  { 41 using (FileStream streamWriter = File.Create(TargetDirectory + directoryName + fileName)) 42  { 43 int size = 2048; 44 byte[] data = new byte[2048]; 45 while (true) 46  { 47 size = zipfiles.Read(data, 0, data.Length); 48 49 if (size > 0) 50 streamWriter.Write(data, 0, size); 51 else 52 break; 53  } 54  streamWriter.Close(); 55  } 56  } 57  } 58  } 59 60  zipfiles.Close(); 61  } 62 }
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转载自www.cnblogs.com/cuihongyu3503319/p/10669440.html
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