安装名为 SevenZipSharp.Interop 的NuGet包

然后，您可以读取归档中的文件：

static void ReadFilesInArchive(string archiveFilename)
    SevenZipBase.SetLibraryPath(@".\x86\7z.dll");
    var extractor = new SevenZipExtractor(archiveFilename);
    var filesInArchive = extractor.ArchiveFileData.ToList();
    filesInArchive.ForEach(f =>
        using (MemoryStream ms = new MemoryStream())
            extractor.ExtractFile(f.FileName, ms);
            ms.Seek(0, SeekOrigin.Begin);
            using (StreamReader sr = new StreamReader(ms))
                var lines = sr.ReadAllLines();
                Console.WriteLine(lines.Count());
}

请注意，这依赖于以下扩展方法：

public static class Extensions
    public static IEnumerable<string> ReadAllLines(this StreamReader reader)
        string line;