我正在嘗試使用MemoryStream如下的簡(jiǎn)單演示文本文件創(chuàng)建ZIP存檔：using (var memoryStream = new MemoryStream())using (var archive = new ZipArchive(memoryStream , ZipArchiveMode.Create)){    var demoFile = archive.CreateEntry("foo.txt");    using (var entryStream = demoFile.Open())    using (var streamWriter = new StreamWriter(entryStream))    {        streamWriter.Write("Bar!");    }    using (var fileStream = new FileStream(@"C:\Temp\test.zip", FileMode.Create))    {        stream.CopyTo(fileStream);    }}如果我運(yùn)行此代碼，則會(huì)創(chuàng)建存檔文件本身，但不會(huì)創(chuàng)建foo.txt。但是，如果我MemoryStream直接替換文件流，則會(huì)正確創(chuàng)建存檔：using (var fileStream = new FileStream(@"C:\Temp\test.zip", FileMode.Create))using (var archive = new ZipArchive(fileStream, FileMode.Create)){    // ...}是否可以使用a MemoryStream創(chuàng)建ZIP存檔而不用FileStream？