How to Convert RAR to 7ZIP Using C#

First, you need to obtain and reference the Aspose.Zip library in your C# project. You can typically download it from the Aspose website or use a NuGet package if available. Package manager, search for Aspose.ZIP and install. You may also use the following command from the Package Manager Console.

Manage NuGet packages with the Visual Studio Package

Package Manager Console Command:

PM> Install-Package Aspose.Zip

Steps to Convert RAR to 7ZIP via C#

Convertation from RAR to 7ZIP consist of following steps:

  • Extract archive to intermediate storage
  • Compress extracted data to desired format

System Requirements

Before running the conversion example code, make sure that you have the following prerequisites.

  • Microsoft Windows or a compatible OS with .NET Framework, Mono and COM Interop.
  • Development environment like Microsoft Visual Studio.
  • Aspose.Tasks for .NET DLL referenced in your project.

Sample code to convert from RAR to 7ZIP

Converting RAR archives to 7ZIP format is a useful process that allows users to transition from one popular compression format to another. RAR archives, known for their efficient compression and widespread usage, can be conveniently transformed into 7ZIP archives using tools like those provided by Aspose.Zip for .NET.

During the conversion, the original file structure and data are carefully preserved, ensuring that the content remains intact and accessible. 7ZIP archives, on the other hand, are favored for their open-source nature, strong compression capabilities, and support for various compression algorithms.

Once the conversion to 7ZIP is completed, the resulting archive becomes compatible with a wide range of platforms and can be easily shared and accessed. This conversion simplifies the transition between compression formats, maximizes compression efficiency, and ensures data remains secure and adaptable in the 7ZIP format. It proves valuable for users who need to switch to or distribute data in the 7ZIP format while retaining data integrity.

Code from RAR to various formats: The RAR archive typically contains multiple records or files. To convert this archive into formats such as GZ (Gzip), LZ (Lzip), Z (Unix Compress), XZ (XZ Utils), and BZ2 (Bzip2), a common approach is to first package the contents into a TAR (Tape Archive) format. This process is reminiscent of the typical practice in Linux environments.

In this conversion process, each file or record within the RAR archive is first bundled together into a single TAR archive. This TAR archive serves as a container for the individual files, preserving their original structure and metadata. Once the data is encapsulated within the TAR archive, it becomes easier to apply different compression algorithms and formats.

The choice of TAR as an intermediate format is due to its simplicity and wide compatibility across various Unix-like operating systems. It provides a straightforward way to group files together without applying compression directly. After the TAR packaging is complete, subsequent compression operations can be applied to the TAR archive to generate the desired output formats, such as GZ, LZ, Z, XZ, or BZ2.

Convert from RAR to 7ZIP - C#:

    using (SevenZipArchive sevenZipArchive = new SevenZipArchive(new SevenZipEntrySettings(new SevenZipLZMA2CompressionSettings())))
        using (RarArchive rar = new RarArchive(@"archive.rar"))
            for (int i = 0; i < rar.Entries.Count; i++)
                if (!rar.Entries[i].IsDirectory)
                    var ms = new MemoryStream();
                    ms.Seek(0, SeekOrigin.Begin);
                    sevenZipArchive.CreateEntry(rar.Entries[i].Name, ms);
                    sevenZipArchive.CreateEntry(rar.Entries[i].Name+ "/", Stream.Null);

Free App to Convert ZIP to 7ZIP

Check our live demos for RAR to 7ZIP conversion with following benefits

A reliable Aspose.ZIP Library that can compress, extract, encrypt, decrypt, convert and merge archives. Aspose.ZIP for .NET API allows to manipulate various archive types without without going into the underlying complexity of the compress file formats with minimum coding efforts.

Other Supported RAR Conversions

You can also convert RAR into many other file formats including few listed below.