Click here to Skip to main content
11,412,833 members (75,494 online)
Click here to Skip to main content

Zip and Unzip from a C# program using J# runtime

, 25 Apr 2004 CPOL
Rate this:
Please Sign up or sign in to vote.
Zip and Unzip from a C# program using java.util.zip

Introduction

There are a lot of libraries to work with zip files. I found a very easy way to work with zip files from a C# program. The Microsoft .Net Framework 1.1 comes with new language: J#. Let's look at it a little. For sure, Java is a parent of it; if so, java.util.zip is somewhere here! I spent a few minutes and found it in vjslib.dll. Let's do the work. Start a new C# project and select Windows Application. Our goal is something like that:

All we need to do is: add reference to our project:

Now, we can use it:

// Output stream 
java.io.FileOutputStream fos = new java.io.FileOutputStream(zipFileName); 

// Tie to zip stream 
java.util.zip.ZipOutputStream zos = new java.util.zip.ZipOutputStream(fos); 

// Stream with source file 
java.io.FileInputStream fis = new java.io.FileInputStream(sourceFile); 

// It's our entry in zip 
java.util.zip.ZipEntry ze = new java.util.zip.ZipEntry(sourceFile); 

zos.putNextEntry(ze); 
sbyte[] buffer = new sbyte[1024]; 
int len; 

// Read and write until done 
while((len = fis.read(buffer)) >= 0) 
{ 
    zos.write(buffer, 0, len); 
}
 
// Close everything 
zos.closeEntry(); 
fis.close(); 
zos.close(); 
fos.close(); 

Conclusion

That's all! Demo application is included.

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Share

About the Author

Valeri Makarov
Software Developer
Russian Federation Russian Federation
Over 12 years of experience as a Software Developer/Engineer, development and production support applications for MS DOS, MS Windows.
Certified C Programmer
Certified C++ Programmer
Certified Visual FoxPro Programmer
Certified C# Programmer

Comments and Discussions

 
QuestionWhat about cyrillics? Pin
chien-andalou at 16-Jul-09 6:32
memberchien-andalou16-Jul-09 6:32 
GeneralHanging onto corrupt file Pin
terry summers at 22-Mar-09 11:16
memberterry summers22-Mar-09 11:16 
Questionunzipped progress status Pin
byteway at 2-Oct-07 22:38
memberbyteway2-Oct-07 22:38 
QuestionUnzip file stored in database Pin
mikebiro at 1-Oct-07 13:11
membermikebiro1-Oct-07 13:11 
QuestionCan I zip without folder structure? Pin
jupinno_ys at 15-Aug-07 22:57
memberjupinno_ys15-Aug-07 22:57 
Can I zip without folder structure?

Example:

if I want to zip: D:\myFolder\images\*.*

the zipped output always contains folder myFolder\images\

Can I have the files when it's unzip without above folder structure, and directly list the images on root unzipped folder?

Hope this is clear, thks
AnswerRe: Can I zip without folder structure? Pin
PranaySharma84 at 27-Aug-07 4:55
memberPranaySharma8427-Aug-07 4:55 
GeneralProblem in unzip Pin
hamidreza Talebi at 7-Aug-07 2:18
memberhamidreza Talebi7-Aug-07 2:18 
QuestionSize of Zipped File Pin
kyreddy at 26-Jun-07 5:00
memberkyreddy26-Jun-07 5:00 
Generalzip files with password Pin
Member #1129748 at 24-Feb-07 3:21
memberMember #112974824-Feb-07 3:21 
GeneralRe: zip files with password Pin
Valeri at 18-Apr-07 20:47
memberValeri18-Apr-07 20:47 
GeneralRe: zip files with password Pin
amit_2006_it@yahoo.com at 6-Jun-07 10:05
memberamit_2006_it@yahoo.com6-Jun-07 10:05 
GeneralRe: zip files with password Pin
Valeri at 7-Jun-07 8:13
memberValeri7-Jun-07 8:13 
QuestionHow to unzip password protected zip files? Pin
sakthivenkatesh at 22-Feb-07 14:04
membersakthivenkatesh22-Feb-07 14:04 
AnswerRe: How to unzip password protected zip files? Pin
Valeri at 18-Apr-07 20:53
memberValeri18-Apr-07 20:53 
GeneralGood job Pin
joachimF at 7-Dec-06 0:52
memberjoachimF7-Dec-06 0:52 
QuestionHow can we unzip password-protected files. Pin
Anjum Rizwi at 26-Nov-06 20:56
memberAnjum Rizwi26-Nov-06 20:56 
QuestionIs it possible to read in the middle of the zip file? Pin
shultas at 30-Aug-06 16:52
membershultas30-Aug-06 16:52 
AnswerRe: Is it possible to read in the middle of the zip file? Pin
Valeri at 30-Aug-06 21:21
memberValeri30-Aug-06 21:21 
GeneralRe: Is it possible to read in the middle of the zip file? Pin
shultas at 31-Aug-06 12:19
membershultas31-Aug-06 12:19 
GeneralZip Folder qithin a zip folder Pin
M Ali Raza at 5-Apr-06 22:02
memberM Ali Raza5-Apr-06 22:02 
GeneralProblem In Latin FileNames Pin
dealarconjose at 15-Mar-06 2:03
memberdealarconjose15-Mar-06 2:03 
GeneralAlternative (with code) Pin
Elmue at 21-Nov-05 1:41
memberElmue21-Nov-05 1:41 
GeneralWhat about multiple folders? Pin
dragomir at 22-Dec-05 1:54
memberdragomir22-Dec-05 1:54 
GeneralRe: What about multiple folders? Pin
Elmue at 31-Dec-05 2:53
memberElmue31-Dec-05 2:53 
GeneralRe: What about multiple folders? Pin
wyattda at 17-Jan-06 18:36
memberwyattda17-Jan-06 18:36 
GeneralRe: Alternative (with code) Pin
chris175 at 5-Dec-06 5:49
memberchris1755-Dec-06 5:49 
GeneralAble to zip directories and their contents Pin
nicholaskeytholeong at 26-Aug-05 20:01
membernicholaskeytholeong26-Aug-05 20:01 
GeneralRe: Able to zip directories and their contents Pin
obinna_eke at 30-May-06 2:29
memberobinna_eke30-May-06 2:29 
GeneralRe: Able to zip directories and their contents Pin
sanjayg123 at 3-Mar-07 22:59
membersanjayg1233-Mar-07 22:59 
GeneralZipping folders and their subdirectories Pin
nicholaskey at 12-Aug-05 18:39
sussnicholaskey12-Aug-05 18:39 
GeneralRe: Zipping folders and their subdirectories Pin
nicholaskeytholeong at 12-Aug-05 18:42
membernicholaskeytholeong12-Aug-05 18:42 
GeneralThank You Pin
Seth O'Neal at 6-May-05 8:37
memberSeth O'Neal6-May-05 8:37 
GeneralThere is a bug in those classes Pin
Nishant S at 9-May-04 4:56
staffNishant S9-May-04 4:56 
GeneralRe: There is a bug in those classes Pin
Valeri at 9-May-04 5:28
memberValeri9-May-04 5:28 
GeneralRe: There is a bug in those classes Pin
Nishant S at 9-May-04 5:30
staffNishant S9-May-04 5:30 
GeneralRe: There is a bug in those classes Pin
cmhasan at 29-Nov-04 6:25
membercmhasan29-Nov-04 6:25 
GeneralThis actually has a problem. Pin
udaan2003 at 3-May-04 6:46
memberudaan20033-May-04 6:46 
GeneralRe: This actually has a problem. Pin
Valeri at 3-May-04 8:02
memberValeri3-May-04 8:02 
GeneralRe: This actually has a problem. Pin
udaan2003 at 4-May-04 6:58
memberudaan20034-May-04 6:58 
GeneralRe: This actually has a problem. Pin
Valeri at 4-May-04 8:00
memberValeri4-May-04 8:00 
GeneralThis has been covered in a fair bit of detail in another article... Pin
Duncanma at 25-Apr-04 23:22
memberDuncanma25-Apr-04 23:22 
GeneralRe: This has been covered in a fair bit of detail in another article... Pin
Valeri at 25-Apr-04 23:45
memberValeri25-Apr-04 23:45 

General General    News News    Suggestion Suggestion    Question Question    Bug Bug    Answer Answer    Joke Joke    Rant Rant    Admin Admin   

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.

| Advertise | Privacy | Terms of Use | Mobile
Web03 | 2.8.150427.1 | Last Updated 26 Apr 2004
Article Copyright 2004 by Valeri Makarov
Everything else Copyright © CodeProject, 1999-2015
Layout: fixed | fluid