How Can I Create 7-Zip Archives Using C#?

Creating 7-Zip Archives with .NET

Question: How can you create 7-Zip archives from a C# console application?

Answer:

Several approaches exist for creating 7-Zip archives using .NET:

• Shelling Out to 7z.exe: The simplest and most effective method is to call the 7z.exe executable from your application. This approach requires ensuring that 7z.exe is installed on all target machines.
• In-Memory Compression with LZMA SDK: This technique involves compressing data "in-memory" before sending it to the client. However, the byte[] array generated by this method cannot be extracted using the standard 7-Zip program.
• 7zSharp Wrapper: This wrapper interfaces with the 7z executable or LZMA SDK. While it can create archives, it may not allow for extraction using the regular 7-Zip program.
• 7Zip SDK (LZMA SDK): This is the official SDK for 7-Zip and provides support for both C# and Java. It offers the ability to create archives compatible with the standard 7-Zip program.
• SharpZipLib: This library supports various compression formats but does not include support for 7-Zip.

For additional insight, consider the following resources:

• [EggCafe 7Zip Cookie Example](https://eggcafe.com.br/eggs/regex_egg2.htm): Demonstrates the use of the 7Zip DLL for cookie compression.
• [CodePlex Wrapper](https://codeplex.com/Sharp7Zip): An open-source project that integrates 7z compression functionality.
• [CSharp.ZipLib](https://sourceforge.net/projects/sharpziplib/): A general-purpose ZIP compression library that does not support 7-Zip.
• [CodeProject 7Zip Example](https://www.codeproject.com/Articles/8643/C-7Zip-Sharp): A sample demonstrating 7-Zip integration.

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