Sample C# .net code for zipping a file using 7zip

Question

I have installed 7-zip 4.65 on my machine at C:\Program files. I want to use it in C# code to zip a file. The file name will be provided by the user dynamically. Can any one please provide a sample code on how to use 7zip in C# code?

score 11 · Answer 1 · answered Sep 11 '14 at 12:16

lots of answer given above but i used this below mention code to zip or unzip a file using 7zip

you must have 7zip application in your system .

     public void ExtractFile(string source, string destination)
        {
            // If the directory doesn't exist, create it.
            if (!Directory.Exists(destination))
                Directory.CreateDirectory(destination);

            string zPath = @"C:\Program Files\7-Zip\7zG.exe";
// change the path and give yours 
            try
            {
                ProcessStartInfo pro = new ProcessStartInfo();
                pro.WindowStyle = ProcessWindowStyle.Hidden;
                pro.FileName = zPath;
                pro.Arguments = "x \"" + source + "\" -o" + destination;
                Process x = Process.Start(pro);
                x.WaitForExit();
            }
            catch (System.Exception Ex) {
              //DO logic here 
              }
        }

to create zip file

public void CreateZip()
{
    string sourceName = @"d:\a\example.txt";
    string targetName = @"d:\a\123.zip";
    ProcessStartInfo p = new ProcessStartInfo();
    p.FileName = @"C:\Program Files\7-Zip\7zG.exe";
    p.Arguments = "a -tgzip \"" + targetName + "\" \"" + sourceName + "\" -mx=9";
    p.WindowStyle = ProcessWindowStyle.Hidden;
    Process x = Process.Start(p);
    x.WaitForExit();
}

This is a project I'm working on right now. At first I downloaded the LZMA SDK from the 7-zip site and wrote some code using Pavlov's C# library to compress. Worked great! Then I realized I simply had individual LZMA files on my hands, not a 7z archive file. Pavlov does not provide any C# library for this. So I have instead just decided that it will be easiest to just do a process call to 7z.exe. Thank you for your sample, which will get me started. — Steve Greene, Nov 25 '15 at 20:15
pro.Arguments = "x \"" + source + "\" -o" + destination; Please anyone can explain that what is the meaning of (x , ~o) these characters in argument — Apoorva Asthana, Aug 14 '19 at 05:39
@ApoorvaAsthana Please go and check this link https://sevenzip.osdn.jp/chm/cmdline/commands/index.htm — Vishal Sen, Aug 21 '19 at 15:21
I'd use the try-catch block in CreateZip in same way it's done in ExtractFile and add a check for existence of sourceName as a file or a folder. — Fil, Sep 14 '22 at 09:35

score 4 · Answer 2 · answered Jul 08 '10 at 13:26

4

Instead of the binary version you need the source code.

This can be get as the LZMA SDK.

There you'll find a folder CS that contains a C# implementation of the algorithm for 7zip files.

answered Jul 08 '10 at 13:26

Oliver

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score 3 · Answer 3 · edited May 23 '17 at 11:46

Have you tried this C# interface for 7zip: http://www.codeproject.com/KB/DLL/cs_interface_7zip.aspx

[edit] Looks like this has been answered already: Free compression library for C# which supports 7zip (LZMA)

further libraries:

http://www.eggheadcafe.com/tutorials/aspnet/064b41e4-60bc-4d35-9136-368603bcc27a/7zip-lzma-inmemory-com.aspx

http://sevenzipsharp.codeplex.com/

http://www.7-zip.org/sdk.html - From the official site so probably best to use this

score 0 · Answer 4 · answered Jul 08 '10 at 12:55

0

Or you can use the J# zip library (which is included in the .Net Framework) a sample: http://weblogs.asp.net/jgalloway/archive/2007/10/25/creating-zip-archives-in-net-without-an-external-library-like-sharpziplib.aspx

answered Jul 08 '10 at 12:55

Flakron Bytyqi

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Can J# do the .7z format? (OP didn't specify which format, but I know 7zip defaults to its own format, though it can do .zip too.) – Joe White Aug 15 '10 at 12:15

score 0 · Answer 5 · answered Jul 08 '10 at 13:41

I suppose if you wish to use the installed one you have in c:\program files, you could just use System.Diagnostics.Process to run command line apps - http://msdn.microsoft.com/en-us/library/system.diagnostics.process.aspx

Passing parameters is easy too. There are plenty of examples here - http://www.c-sharpcorner.com/UploadFile/DipalChoksi/ShellCommandsInCS12032005042031AM/ShellCommandsInCS.aspx

Sample C# .net code for zipping a file using 7zip

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