Create ZIP Archives in C#

add-files-to-zip-filepath.cs

// Create FileStream for output ZIP archive
using (FileStream zipFile = File.Open("archive.zip", FileMode.Create))
{
    // Create archive
    using (var archive = new Archive())
    {
        // Add file to ZIP archive
        archive.CreateEntry("data.bin", "file.dat");
        archive.Save(zipFile);
    }
}

add-mulitple-files-to-zip-fileinfo.cs

// Create FileStream for output ZIP archive
using (FileStream zipFile = File.Open("compressed_files.zip", FileMode.Create))
{
	// Files to be added to archive
	FileInfo fi1 = new FileInfo("alice29.txt");
	FileInfo fi2 = new FileInfo("fields.c");

	using (var archive = new Archive())
	{
		// Add files to the archive
		archive.CreateEntry("alice29.txt", fi1);
		archive.CreateEntry("fields.c", fi2);
		// Create ZIP archive
		archive.Save(zipFile, new ArchiveSaveOptions() { Encoding = Encoding.ASCII });
	}
}

add-mulitple-files-to-zip.cs

// Create FileStream for output ZIP archive
using (FileStream zipFile = File.Open("compressed_files.zip", FileMode.Create))
{
	// File to be added to archive
	using (FileStream source1 = File.Open("alice29.txt", FileMode.Open, FileAccess.Read))
	{
		// File to be added to archive
		using (FileStream source2 = File.Open("asyoulike.txt", FileMode.Open, FileAccess.Read))
		{
			using (var archive = new Archive())
			{
				// Add files to the archive
				archive.CreateEntry("alice29.txt", source1);
				archive.CreateEntry("asyoulik3.txt", source2);
				// ZIP the files
				archive.Save(zipFile, new ArchiveSaveOptions() { Encoding = Encoding.ASCII, ArchiveComment = "two files are compressed in this archive" });
			}
		}
	}
}

compress-folder-into-zip.cs

// Create FileStream for output ZIP archive
using (FileStream zipFile = File.Open("compress_directory.zip", FileMode.Create))
{
	using (Archive archive = new Archive())
	{
		// Folder to be Zipped
		DirectoryInfo corpus = new DirectoryInfo("CanterburyCorpus");
		archive.CreateEntries(corpus);
		// Create ZIP archive
		archive.Save(zipFile);
	}
}

create-password-protected-zip.cs

// Create FileStream for output ZIP archive
using (FileStream zipFile = File.Open("compress_directory.zip", FileMode.Create))
{
	using (Archive archive = new Archive(new ArchiveEntrySettings(null, new TraditionalEncryptionSettings("p@s$"))))
	{
		// Add folder to the archive
		DirectoryInfo corpus = new DirectoryInfo("CanterburyCorpus");
		archive.CreateEntries(corpus);
		// Create ZIP archive
		archive.Save(zipFile);
	}
}

create-zip-archive-in-csharp.cs

// Create FileStream for output ZIP archive
using (FileStream zipFile = File.Open("compressed_file.zip", FileMode.Create))
{
	// File to be added to archive
	using (FileStream source1 = File.Open("alice29.txt", FileMode.Open, FileAccess.Read))
	{
		using (var archive = new Archive(new ArchiveEntrySettings()))
		{
			// Add file to the archive
			archive.CreateEntry("alice29.txt", source1);
			// ZIP file
			archive.Save(zipFile);
		}
	}
}

encrypt-zip-with-aes-encryption.cs

// Create FileStream for output ZIP archive
using (FileStream zipFile = File.Open("compress_directory.zip", FileMode.Create))
{
	using (Archive archive = new Archive(new ArchiveEntrySettings(null, new AesEcryptionSettings("p@s$", EncryptionMethod.AES128))))
	{
		// Add folder to archive
		DirectoryInfo corpus = new DirectoryInfo("CanterburyCorpus");
		archive.CreateEntries(corpus);
		// Create ZIP archive
		archive.Save(zipFile);
	}
}