using (var fileStream = new FileStream(saveZipName, FileMode.CreateNew))
{
    // 使用內(nèi)存流創(chuàng)建壓縮文件
    using (var archive = new ZipArchive(fileStream, ZipArchiveMode.Create, true))
    {
        var files = Directory.GetFiles(taskDir, "*", SearchOption.AllDirectories);

        foreach (var file in files)
        {
            //相對路徑
            var relativePath = Path.GetRelativePath(FileAndFolderConfig.CollectionSpaceFolder.Path, file);

            archive.CreateEntryFromFile(file, relativePath);
        }
    }
}

using (var memoryStream = new MemoryStream())
{
    // 使用內(nèi)存流創(chuàng)建壓縮文件
    using (var archive = new ZipArchive(memoryStream, ZipArchiveMode.Create, true))
    {
        var files = Directory.GetFiles(taskDir, "*", SearchOption.AllDirectories);

        foreach (var file in files)
        {
            //相對路徑
            var relativePath = Path.GetRelativePath(FileAndFolderConfig.CollectionSpaceFolder.Path, file);
            var entry = archive.CreateEntry(relativePath, CompressionLevel.Optimal);

            using var entryStream = entry.Open();
            using var fileStream = File.OpenRead(file);
            await fileStream.CopyToAsync(entryStream);
        }
    }
    memoryStream.Position = 0; // 重置流位置
}

                 // 下載文件到內(nèi)存流
                 using (var memoryStream = new MemoryStream())
                 {
                     await taskFile.CopyToAsync(memoryStream);
                     taskFile.Close();
                     memoryStream.Position = 0; // 重置流位置
                     using (var archive = new ZipArchive(memoryStream, ZipArchiveMode.Read))
                     {
                         foreach (var entry in archive.Entries)
                         {
                             var entryOutputPath = Path.Combine(FileAndFolderConfig.CollectionSpaceFolder.Path, entry.FullName);
                             // 如果是目錄條目，創(chuàng)建目錄
                             if (string.IsNullOrEmpty(entry.Name))
                             {
                                 Directory.CreateDirectory(Path.GetDirectoryName(entryOutputPath));
                                 continue;
                             }
                             // 確保父目錄存在
                             var parentDir = Path.GetDirectoryName(entryOutputPath);
                             if (!string.IsNullOrEmpty(parentDir))
                             {
                                 Directory.CreateDirectory(parentDir);
                             }
                             // 解壓文件
                             entry.ExtractToFile(entryOutputPath, overwrite: true);
                         }
                     }
                 }