使用.Net 4.5 ZipFile，无法解压缩使用Windows zip压缩的文件（右键单击发送到Compressed）

Question

Am implementing a feature in an ASP.NET web application in the office to let people upload zip files in which there is an xml file to import into a database.

The problem is, I get this error when using System.IO.Compression.ZipFile :

"Number of entries expected in End Of Central Directory does not correspond to number of entries in Central Directory."

and when I use System.IO.Compression.DeflateStream , I get this error:

"Block length does not match with its complement."

Does not Windows zip use the same libraries? Are the zip formats/algorithms different from .Net to Windows zip?

and if anyone can suggest a solution I would be thankful.

Answer 1

This may be yet another bug in the .NET implementations for deflate, zip, etc. support. You should try DotNetZip instead.

Answer 2

I found the issue, it seems there was nothing wrong with .net libraries to unzip the file, the problem was with the way the file written to disk after being uploaded to my asp.net application, a problem with encoding was in place, since I wrote the exact bytes into disk I was able to unzip it with .Net libraries.

Thanks for everyone's contribution.