Using SevenZipSharp to compress in multi volumes?

Question

I want to use SevenZipsharp to compress a file in volumes, for example to compress a file of 100 mb into 10 files of 10 mb each. We can do the same using 7zip.exe -volume parameter so... For example, when I compress in multi volumes using 7Zip I get these structure of files: ``` File.7z.001 File.7z.002 File.7z.003 etc... ``` The files are not independient, Are not a amount of 7zip files with the same size, is one compressed file in various volumes, I mean to extract the entire content we need the first file "File.7z.001" I want to make the same thing using SevenZipSharp (if possible). I've made this snippet in vb.net (but no matter if the answer are in C# code), I need to implement the multi-volume option, I need help: ``` Imports SevenZip Dim dll As String = "7z.dll" Private Function SevenZipSharp_Compress(ByVal Input_DirOrFile As String, _ Optional ByVal OutputFileName As String = Nothing, _ Optional ByVal Format As OutArchiveFormat = OutArchiveFormat.SevenZip, _ Optional ByVal Comp…

Accepted Answer

On your `Compressor` object, set `VolumeSize` to the desired size of the output file(s) in bytes. Using the sample code below, with the source directory full of about 72MB of mp3 files, the compressor created 8 output files named zipped.7z.001, zipped.7z.002, etc.

Looking at the current source for the `SevenZipExtractor` class, it looks like the multi-volume compression is only available if you are using `OutArchiveFormat.SevenZip` as your `ArchiveFormat`.

```
string dll = @"C:\Users\WarrenG\Desktop\7z.dll";
string source = @"C:\Users\WarrenG\Desktop\source";
string output = @"C:\Users\WarrenG\Desktop\output\zipped.7z";

SevenZipExtractor.SetLibraryPath(dll);
SevenZipCompressor compressor = new SevenZipCompressor();
compressor.ArchiveFormat = OutArchiveFormat.SevenZip;
compressor.CompressionMode = CompressionMode.Create;
compressor.TempFolderPath = System.IO.Path.GetTempPath();
compressor.VolumeSize = 10000000;   // output file size in bytes
compressor.CompressDirectory(source, output);
```

Using SevenZipSharp to compress in multi volumes?

Solution

Problem