ICSharpCode.SharpZipLib压缩解压

一、使用ICSharpCode.SharpZipLib.dll；  

  下载地址  

  http://www.icsharpcode.net/OpenSource/SharpZipLib/Download.aspx  

 

二、基于（ICSharpCode.SharpZipLib.dll）的文件压缩方法，类文件

压缩文件

 

1. using System;  
2. using System.IO;  
3. using System.Collections;  
4. using ICSharpCode.SharpZipLib.Checksums;  
5. using ICSharpCode.SharpZipLib.Zip;  
6.   
7.   
8. namespace FileCompress  
9. {  
10.     /// <summary>  
11.     /// 功能：压缩文件  
12.     /// creator chaodongwang 2009-11-11  
13.     /// </summary>  
14.     public class ZipClass  
15.     {  
16.         /// <summary>  
17.         /// 压缩单个文件  
18.         /// </summary>  
19.         /// <param name="FileToZip">被压缩的文件名称(包含文件路径)</param>  
20.         /// <param name="ZipedFile">压缩后的文件名称(包含文件路径)</param>  
21.         /// <param name="CompressionLevel">压缩率0（无压缩）-9（压缩率最高）</param>  
22.         /// <param name="BlockSize">缓存大小</param>  
23.         public void ZipFile(string FileToZip, string ZipedFile, int CompressionLevel)  
24.         {  
25.             //如果文件没有找到，则报错   
26.             if (!System.IO.File.Exists(FileToZip))  
27.             {  
28.                 throw new System.IO.FileNotFoundException("文件：" + FileToZip + "没有找到！");  
29.             }  
30.   
31.             if (ZipedFile == string.Empty)  
32.             {  
33.                 ZipedFile = Path.GetFileNameWithoutExtension(FileToZip) + ".zip";  
34.             }  
35.   
36.             if (Path.GetExtension(ZipedFile) != ".zip")  
37.             {  
38.                 ZipedFile = ZipedFile + ".zip";  
39.             }  
40.   
41.             ////如果指定位置目录不存在，创建该目录  
42.             //string zipedDir = ZipedFile.Substring(0,ZipedFile.LastIndexOf("/"));  
43.             //if (!Directory.Exists(zipedDir))  
44.             //    Directory.CreateDirectory(zipedDir);  
45.   
46.             //被压缩文件名称  
47.             string filename = FileToZip.Substring(FileToZip.LastIndexOf('//') + 1);  
48.               
49.             System.IO.FileStream StreamToZip = new System.IO.FileStream(FileToZip, System.IO.FileMode.Open, System.IO.FileAccess.Read);  
50.             System.IO.FileStream ZipFile = System.IO.File.Create(ZipedFile);  
51.             ZipOutputStream ZipStream = new ZipOutputStream(ZipFile);  
52.             ZipEntry ZipEntry = new ZipEntry(filename);  
53.             ZipStream.PutNextEntry(ZipEntry);  
54.             ZipStream.SetLevel(CompressionLevel);  
55.             byte[] buffer = new byte[2048];  
56.             System.Int32 size = StreamToZip.Read(buffer, 0, buffer.Length);  
57.             ZipStream.Write(buffer, 0, size);  
58.             try  
59.             {  
60.                 while (size < StreamToZip.Length)  
61.                 {  
62.                     int sizeRead = StreamToZip.Read(buffer, 0, buffer.Length);  
63.                     ZipStream.Write(buffer, 0, sizeRead);  
64.                     size += sizeRead;  
65.                 }  
66.             }  
67.             catch (System.Exception ex)  
68.             {  
69.                 throw ex;  
70.             }  
71.             finally  
72.             {  
73.                 ZipStream.Finish();  
74.                 ZipStream.Close();  
75.                 StreamToZip.Close();  
76.             }  
77.         }  
78.   
79.         /// <summary>  
80.         /// 压缩文件夹的方法  
81.         /// </summary>  
82.         public void ZipDir(string DirToZip, string ZipedFile, int CompressionLevel)  
83.         {  
84.             //压缩文件为空时默认与压缩文件夹同一级目录  
85.             if (ZipedFile == string.Empty)  
86.             {  
87.                 ZipedFile = DirToZip.Substring(DirToZip.LastIndexOf("/") + 1);  
88.                 ZipedFile = DirToZip.Substring(0, DirToZip.LastIndexOf("/")) +"//"+ ZipedFile+".zip";  
89.             }  
90.   
91.             if (Path.GetExtension(ZipedFile) != ".zip")  
92.             {  
93.                 ZipedFile = ZipedFile + ".zip";  
94.             }  
95.   
96.             using (ZipOutputStream zipoutputstream = new ZipOutputStream(File.Create(ZipedFile)))  
97.             {  
98.                 zipoutputstream.SetLevel(CompressionLevel);  
99.                 Crc32 crc = new Crc32();  
100.                 Hashtable fileList = getAllFies(DirToZip);  
101.                 foreach (DictionaryEntry item in fileList)  
102.                 {  
103.                     FileStream fs = File.OpenRead(item.Key.ToString());  
104.                     byte[] buffer = new byte[fs.Length];  
105.                     fs.Read(buffer, 0, buffer.Length);  
106.                     ZipEntry entry = new ZipEntry(item.Key.ToString().Substring(DirToZip.Length + 1));  
107.                     entry.DateTime = (DateTime)item.Value;  
108.                     entry.Size = fs.Length;  
109.                     fs.Close();  
110.                     crc.Reset();  
111.                     crc.Update(buffer);  
112.                     entry.Crc = crc.Value;  
113.                     zipoutputstream.PutNextEntry(entry);  
114.                     zipoutputstream.Write(buffer, 0, buffer.Length);  
115.                 }  
116.             }  
117.         }  
118.   
119.         /// <summary>  
120.         /// 获取所有文件  
121.         /// </summary>  
122.         /// <returns></returns>  
123.         private Hashtable getAllFies(string dir)  
124.         {  
125.             Hashtable FilesList = new Hashtable();  
126.             DirectoryInfo fileDire = new DirectoryInfo(dir);  
127.             if (!fileDire.Exists)  
128.             {  
129.                 throw new System.IO.FileNotFoundException("目录:" + fileDire.FullName + "没有找到!");  
130.             }  
131.   
132.             this.getAllDirFiles(fileDire, FilesList);  
133.             this.getAllDirsFiles(fileDire.GetDirectories(), FilesList);  
134.             return FilesList;  
135.         }  
136.         /// <summary>  
137.         /// 获取一个文件夹下的所有文件夹里的文件  
138.         /// </summary>  
139.         /// <param name="dirs"></param>  
140.         /// <param name="filesList"></param>  
141.         private void getAllDirsFiles(DirectoryInfo[] dirs, Hashtable filesList)  
142.         {  
143.             foreach (DirectoryInfo dir in dirs)  
144.             {  
145.                 foreach (FileInfo file in dir.GetFiles("*.*"))  
146.                 {  
147.                     filesList.Add(file.FullName, file.LastWriteTime);  
148.                 }  
149.                 this.getAllDirsFiles(dir.GetDirectories(), filesList);  
150.             }  
151.         }  
152.         /// <summary>  
153.         /// 获取一个文件夹下的文件  
154.         /// </summary>  
155.         /// <param name="strDirName">目录名称</param>  
156.         /// <param name="filesList">文件列表HastTable</param>  
157.         private void getAllDirFiles(DirectoryInfo dir, Hashtable filesList)  
158.         {  
159.             foreach (FileInfo file in dir.GetFiles("*.*"))  
160.             {  
161.                 filesList.Add(file.FullName, file.LastWriteTime);  
162.             }  
163.         }  
164.     }  
165. }  

 

    解压文件

view plaincopy to clipboardprint?

1. using System;  
2. using System.Collections.Generic;  
3. /// <summary>   
4. /// 解压文件   
5. /// </summary>   
6.   
7. using System;  
8. using System.Text;  
9. using System.Collections;  
10. using System.IO;  
11. using System.Diagnostics;  
12. using System.Runtime.Serialization.Formatters.Binary;  
13. using System.Data;  
14.   
15. using ICSharpCode.SharpZipLib.Zip;  
16. using ICSharpCode.SharpZipLib.Zip.Compression;  
17. using ICSharpCode.SharpZipLib.Zip.Compression.Streams;   
18.   
19. namespace FileCompress  
20. {  
21.     /// <summary>  
22.     /// 功能：解压文件  
23.     /// creator chaodongwang 2009-11-11  
24.     /// </summary>  
25.     public class UnZipClass  
26.     {  
27.         /// <summary>  
28.         /// 功能：解压zip格式的文件。  
29.         /// </summary>  
30.         /// <param name="zipFilePath">压缩文件路径</param>  
31.         /// <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>  
32.         /// <param name="err">出错信息</param>  
33.         /// <returns>解压是否成功</returns>  
34.         public void UnZip(string zipFilePath, string unZipDir)  
35.         {  
36.             if (zipFilePath == string.Empty)  
37.             {  
38.                 throw new Exception("压缩文件不能为空！");  
39.             }  
40.             if (!File.Exists(zipFilePath))  
41.             {  
42.                 throw new System.IO.FileNotFoundException("压缩文件不存在！");  
43.             }  
44.             //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  
45.             if (unZipDir == string.Empty)  
46.                 unZipDir = zipFilePath.Replace(Path.GetFileName(zipFilePath), Path.GetFileNameWithoutExtension(zipFilePath));  
47.             if (!unZipDir.EndsWith("/"))  
48.                 unZipDir += "/";  
49.             if (!Directory.Exists(unZipDir))  
50.                 Directory.CreateDirectory(unZipDir);  
51.   
52.             using (ZipInputStream s = new ZipInputStream(File.OpenRead(zipFilePath)))  
53.             {  
54.   
55.                 ZipEntry theEntry;  
56.                 while ((theEntry = s.GetNextEntry()) != null)  
57.                 {  
58.                     string directoryName = Path.GetDirectoryName(theEntry.Name);  
59.                     string fileName = Path.GetFileName(theEntry.Name);  
60.                     if (directoryName.Length > 0)  
61.                     {  
62.                         Directory.CreateDirectory(unZipDir + directoryName);  
63.                     }  
64.                     if (!directoryName.EndsWith("/"))  
65.                         directoryName += "/";  
66.                     if (fileName != String.Empty)  
67.                     {  
68.                         using (FileStream streamWriter = File.Create(unZipDir + theEntry.Name))  
69.                         {  
70.   
71.                             int size = 2048;  
72.                             byte[] data = new byte[2048];  
73.                             while (true)  
74.                             {  
75.                                 size = s.Read(data, 0, data.Length);  
76.                                 if (size > 0)  
77.                                 {  
78.                                     streamWriter.Write(data, 0, size);  
79.                                 }  
80.                                 else  
81.                                 {  
82.                                     break;  
83.                                 }  
84.                             }  
85.                         }  
86.                     }  
87.                 }  
88.             }  
89.         }  
90.     }   
91. }