Reliable File Compression and Archiving API for .NET

PM > Install-Package Aspose.Zip

// 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" });
                                            	}
                            	}
            	}
}

// Create an instance of Archive class for ZIP archive
using (Archive zip = new Archive())
{
	// Load the RAR archive
	using (RarArchive rar = new RarArchive(@"D:\archvie.rar"))
	{
    	// Loop through entries of RAR file
    	for (int i = 0; i < rar.Entries.Count; i++)
    	{
         	// Copy each entry from RAR to ZIP
         	if (!rar.Entries[i].IsDirectory)
         	{
             	var ms = new MemoryStream();
             	rar.Entries[i].Extract(ms);
             	ms.Seek(0, SeekOrigin.Begin);
                 zip.CreateEntry(rar.Entries[i].Name, ms);
         	}
         	else
                 zip.CreateEntry(rar.Entries[i].Name + "/", Stream.Null);
     	}
 	}
	// Save the resultant ZIP archive
	zip.Save("output.zip");
}