如何使用C＃创建Zip文件并将文件添加到内存中的特定文件夹中？

Question

我尝试了以下（只是快速PoC）方法，但出现了异常：

  

System.IO.IOException：   Message =处于创建模式的条目只能写入一次，并且一次只能打开一个条目。

    using (MemoryStream zipMS = new MemoryStream())
    {
        using (ZipArchive zipArchive = new ZipArchive(zipMS, ZipArchiveMode.Create, true))
        {
    //read the file bytes
    //byte[] fileToZipBytes = System.IO.File.ReadAllBytes(fileToZip);

    //create the entry - this is the zipped filename
    // just end with "/"
    ZipArchiveEntry zipFileEntry1 = zipArchive.CreateEntry("folder1/folderchild1/test/test.png");
    ZipArchiveEntry zipFileEntry2 = zipArchive.CreateEntry("folder1/folderchild1/test2/test2.png");

    //add the file 1 contents
    using (Stream zipEntryStream = zipFileEntry1.Open())
    using (BinaryWriter zipFileBinary = new BinaryWriter(zipEntryStream))
    {
        zipFileBinary.Write(ssnewImage1);
    }

    //add the file 2 contents
    using (Stream zipEntryStream2 = zipFileEntry2.Open())
    using (BinaryWriter zipFileBinary2 = new BinaryWriter(zipEntryStream2))
    {
        zipFileBinary2.Write(ssnewImage2);
    }

}

        using (FileStream finalZipFileStream = new FileStream(@"C:\Users\peters\Desktop\res.zip", FileMode.Create))
        {
            zipMS.Seek(0, SeekOrigin.Begin);
            zipMS.CopyTo(finalZipFileStream);
        }

    }

希望有人可以帮助我完成这项任务。
干杯