var memoryStream = new MemoryStream[count];//这是要存入压缩包的文件集合(这里是流的形式)
//创建一个zip内存流
            using (var zipmemory = new MemoryStream())
            {
                //创建一个zip文件夹
                using (ZipArchive archive = new ZipArchive(zipmemory, ZipArchiveMode.Create))
                {
                    for (int i = 0; i < count; i++)
                    {
                        //创建文件夹下的文件
                        ZipArchiveEntry readmeEntry = archive.CreateEntry($"code{i}.jpg");
                        //打开文件
                        using (var readmeStream = readmeEntry.Open())
                        {
                            var array = memoryStream[i].ToArray();
                            //将文件流写入文件
                            await readmeStream.WriteAsync(array);
                        }
                        _ = memoryStream[i].DisposeAsync();
                    }
                }
                return zipmemory.ToArray();
            }