Use ICSharpCode. SharpZipLib. dll in C # To Compress and decompress files/folders.

Use ICSharpCode. SharpZipLib. dll in C # To Compress and decompress files/folders.

ICSharpCode. SharpZipLib. dll

1. compress the logs in a specified directory, compress the logs to the CompressionDirectory folder, and clear the uncompressed logs.

# Region: CompresslogDic () {try {string logFilePath = AppDomain. currentDomain. baseDirectory + "logs"; DirectoryInfo logsDic = new DirectoryInfo (logFilePath); FileInfo [] bipLog = logsDic. getFiles (); DateTime dt = DateTime. now; List
 
  
LogsInOneDay = new List
  
   
(); For (int I = 0; I <bipLog. length; I ++) {if (bipLog [I]. name. substring (bipLog [I]. name. length-3 )! = "Zip") {logsInOneDay. Add (bipLog [I]) ;}} if (logsInOneDay. Count> 0) {try {if (! Directory. exists (logsDic. fullName + "\ CompressionDirectory") {Directory. createDirectory (logsDic. fullName + "\ CompressionDirectory");} string compressFileName = dt. toString ("yyyy-MM-dd"); if (File. exists (logsDic. fullName + "\ CompressionDirectory \" + dt. toString ("yyyy-MM-dd") + ". zip ") {Guid guid = Guid. newGuid (); compressFileName = compressFileName + "-" + guid. toString ();} compressFileName + = ". zip "; Compress (logsInOneDay, logsDic. fullName + "\ CompressionDirectory \" + compressFileName, 9,100); foreach (FileInfo fileInfo in logsInOneDay) {try {fileInfo. delete ();} catch (Exception e) {// handle error information} catch (Exception e) {// handle error message records} catch (Exception e) {// error message record processing} # endregion
  
 

2. CompressionDirectory: CompressionDirectory.

# Region CompresslogsDic () {try {string logFilePath = AppDomain. currentDomain. baseDirectory + "logs"; DirectoryInfo logsDic = new DirectoryInfo (logFilePath); FileInfo [] bipLog = logsDic. getFiles (); DateTime dt = DateTime. now; DirectoryInfo [] subLosgDic = logsDic. getDirectories (); foreach (DirectoryInfo bankDic in subLosgDic) {dt = DateTime. now; bipLog = bankDic. getFiles (); List
 
  
LogsInOneDay = new List
  
   
(); For (int I = 0; I <bipLog. length; I ++) {if (bipLog [I]. name. substring (bipLog [I]. name. length-3 )! = "Zip") {logsInOneDay. Add (bipLog [I]) ;}} if (logsInOneDay. Count> 0) {try {if (! Directory. exists (bankDic. fullName + "\ CompressionDirectory") {Directory. createDirectory (bankDic. fullName + "\ CompressionDirectory");} string compressFileName = dt. toString ("yyyy-MM-dd"); if (File. exists (bankDic. fullName + "\ CompressionDirectory \" + dt. toString ("yyyy-MM-dd") + ". zip ") {Guid guid = Guid. newGuid (); compressFileName = compressFileName + "-" + guid. toString ();} compressFileName + = ". zip "; Compress (logsInOneDay, bankDic. fullName + "\ CompressionDirectory \" + compressFileName, 9,100); foreach (FileInfo fileInfo in logsInOneDay) {try {fileInfo. delete ();} catch (Exception e) {// handle error messages }}} catch (Exception e) {// error message record processing }}} catch (Exception e) {// error message record processing }}# endregion
  
 

3. compressed files

# Region compressed file ////// Compressed file //////List of files to be packaged///Target file name///Compression Quality level (0 ~ 9)///Sleep Time (unit: milliseconds)Public static void Compress (List
 
  
FileNames, string GzipFileName, int CompressionLevel, int SleepTimer) {ZipOutputStream s = new ZipOutputStream (File. create (GzipFileName); try {s. setLevel (CompressionLevel); // 0-store only to 9-means best compression foreach (FileInfo file in fileNames) {FileStream fs = null; try {fs = file. open (FileMode. open, FileAccess. readWrite);} catch {continue;} // reads files in batches into the buffer byte [] data = new byte [2048]; int size = 2048; ZipEntry entry = new ZipEntry (Path. GetFileName (file. Name); entry. DateTime = (file. CreationTime> file. LastWriteTime? File. lastWriteTime: file. creationTime); s. putNextEntry (entry); while (true) {size = fs. read (data, 0, size); if (size <= 0) break; s. write (data, 0, size);} fs. close (); Thread. sleep (SleepTimer) ;}} finally {s. finish (); s. close () ;}# endregion
 

4. Extract

# Region decompress the file ////// Decompress the file //////Compressed package file name///Decompress the target pathPublic static void Decompress (string GzipFile, string targetPath) {// string directoryName = Path. getDirectoryName (targetPath + "//") + "//"; string directoryName = targetPath; if (! Directory. exists (directoryName) Directory. createDirectory (directoryName); // generate the extract directory string CurrentDirectory = directoryName; byte [] data = new byte [2048]; int size = 2048; ZipEntry theEntry = null; using (ZipInputStream s = new ZipInputStream (File. openRead (GzipFile) {while (theEntry = s. getNextEntry ())! = Null) {if (theEntry. IsDirectory) {// This node is the directory if (! Directory. Exists (CurrentDirectory + theEntry. Name) Directory. CreateDirectory (CurrentDirectory + theEntry. Name);} else {if (theEntry. Name! = String. empty) {// check whether the multi-level directory exists if (theEntry. name. contains ("//") {string parentDirPath = theEntry. name. remove (theEntry. name. lastIndexOf ("//") + 1); if (! Directory. exists (parentDirPath) {Directory. createDirectory (CurrentDirectory + parentDirPath) ;}// extract the File to the specified directory using (FileStream streamWriter = File. create (CurrentDirectory + theEntry. name) {while (true) {size = s. read (data, 0, data. length); if (size <= 0) break; streamWriter. write (data, 0, size);} streamWriter. close () ;}}} s. close () ;}# endregion

5. compressing folders

# Region compressed folder ////// Compress the folder //////Folder to be packaged///Target file name///Compression Quality level (0 ~ 9)///Delete original folder?Public static void CompressDirectory (string dirPath, string GzipFileName, int CompressionLevel, bool deleteDir) {// when the compressed file is empty, if (GzipFileName = string. empty) {GzipFileName = dirPath. substring (dirPath. lastIndexOf ("//") + 1); GzipFileName = dirPath. substring (0, dirPath. lastIndexOf ("//") + "//" + GzipFileName + ". zip ";} // if (Path. getExtension (GzipFileName )! = ". Zip ") // {// GzipFileName = GzipFileName + ". zip "; //} using (ZipOutputStream zipoutputstream = new ZipOutputStream (File. create (GzipFileName) {zipoutputstream. setLevel (CompressionLevel); ICSharpCode. sharpZipLib. checksums. crc32 crc = new ICSharpCode. sharpZipLib. checksums. crc32 (); Dictionary
 
  
FileList = GetAllFies (dirPath); foreach (KeyValuePair
  
   
Item in fileList) {FileStream fs = File. openRead (item. key. toString (); byte [] buffer = new byte [fs. length]; fs. read (buffer, 0, buffer. length); ZipEntry entry = new ZipEntry (item. key. substring (dirPath. length); entry. dateTime = item. value; entry. size = fs. length; fs. close (); crc. reset (); crc. update (buffer); entry. crc = crc. value; zipoutputstream. putNextEntry (entry); zipoutputstream. write (buffer, 0, buffer. length) ;}} if (deleteDir) {Directory. delete (dirPath, true) ;}# endregion
  
 

6. Get all files under the Dir DIRECTORY parameter (EG: GetAllFies (@ "F: \ WorkSpace") to get all files under the F disk WorkSpace directory)

# Region get all files ////// Obtain all objects //////
 Private static Dictionary
 
  
GetAllFies (string dir) {Dictionary
  
   
FilesList = new Dictionary
   
    
(); DirectoryInfo fileDire = new DirectoryInfo (dir); if (! FileDire. Exists) {throw new System. IO. FileNotFoundException ("Directory:" + fileDire. FullName + "not found! ");} GetAllDirFiles (fileDire, FilesList); GetAllDirsFiles (fileDire. GetDirectories (), FilesList); return FilesList;} # endregion
   
  
 

7. Get the files in all folders in a folder

# Region get the files in all folders in a folder ////// Get the files in all folders in a folder /////////Private static void GetAllDirsFiles (DirectoryInfo [] dirs, Dictionary
 
  
FilesList) {foreach (DirectoryInfo dir in dirs) {foreach (FileInfo file in dir. getFiles ("*. * ") {filesList. add (file. fullName, file. lastWriteTime);} GetAllDirsFiles (dir. getDirectories (), filesList) ;}# endregion
 

8. Get files in a folder

# Region get the file in a folder ////// Get the file in a folder //////Directory Name///File List HastTablePrivate static void GetAllDirFiles (DirectoryInfo dir, Dictionary
 
  
FilesList) {foreach (FileInfo file in dir. GetFiles ("*. *") {filesList. Add (file. FullName, file. LastWriteTime) ;}# endregion