C# DotNetZip 保存到流
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DotNetZip Saving to Stream
提问by user229133
I am using DotNetZip to add a file from a MemoryStreamto a zip file and then to save that zip as a MemoryStreamso that I can email it as an attachment. The code below does not err but the MemoryStreammust not be done right because it is unreadable. When I save the zip to my hard drive everything works perfect, just not when I try to save it to a stream.
我正在使用 DotNetZip 将文件从 a 添加MemoryStream到 zip 文件，然后将该 zip 保存为 a，MemoryStream以便我可以将其作为附件通过电子邮件发送。下面的代码不会出错，但MemoryStream不能正确执行，因为它不可读。当我将 zip 保存到我的硬盘时，一切正常，只是当我尝试将其保存到流时。
using (ZipFile zip = new ZipFile())
{
var memStream = new MemoryStream();
var streamWriter = new StreamWriter(memStream);
streamWriter.WriteLine(stringContent);
streamWriter.Flush();
memStream.Seek(0, SeekOrigin.Begin);
ZipEntry e = zip.AddEntry("test.txt", memStream);
e.Password = "123456!";
e.Encryption = EncryptionAlgorithm.WinZipAes256;
var ms = new MemoryStream();
ms.Seek(0, SeekOrigin.Begin);
zip.Save(ms);
//ms is what I want to use to send as an attachment in an email
}
采纳答案by Sam I am says Reinstate Monica
I've copied your code, and then saved your final memory steam to disk as data.txt. It was completely unreadable to me, but then I realized that it wasn't a text file, it was a zip file, so i saved it as data.zipand it worked as expected
我已经复制了您的代码，然后将您的最终记忆流以data.txt. 它对我来说完全不可读，但后来我意识到它不是一个文本文件，它是一个 zip 文件，所以我将它另存为data.zip并按预期工作
the method I used to save ms to disk is the following(immediately after your zip.Save(ms);line)
我用来将 ms 保存到磁盘的方法如下（在您的zip.Save(ms);行之后）
ms.Position = 0;
byte[] data = ms.ToArray();
File.WriteAllBytes("data.zip", data);
So, I believe that your memory stream is what It is supposed to be, which is compressed text. It won't be readable until you decompress it.
所以，我相信你的内存流应该是什么，它是压缩文本。在解压之前它是不可读的。
回答by user229133
Ok, I figured out my problem, pretty stupid actually. Thanks for everyone's help!
好吧，我想出了我的问题，实际上很愚蠢。感谢大家的帮助！
ZipEntry e = zip.AddEntry("test.txt", memStream);
e.Password = "123456!";
e.Encryption = EncryptionAlgorithm.WinZipAes256;
//zip.Save("C:\Test\Test.zip");
//Stream outStream;
var ms = new MemoryStream();
zip.Save(ms);
//--Needed to add the following 2 lines to make it work----
ms.Seek(0, SeekOrigin.Begin);
ms.Flush();
