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c#zip

how to convert a zip file entry to ZipFile with c# asp ionic library?

im using ionic library to read zip file in c#

i have many zip files in one zip file,i read the zip file but i can't read the subZip files

i have made this portion of code here:

foreach (var sessionEntry in subjectSessions.Entries)
{
    using (MemoryStream entryStream = new MemoryStream())
    {
        sessionEntry.OpenReader().CopyTo(entryStream);
        ZipFile sessionZIPFile = ZipFile.Read(entryStream);
    }
}

but it's not working,it always gives me the same exception

Cannot read that as a ZipFile,Ionic.Zip.BadReadException: Could not read block - no data! (position 0x00000000)

i have tried calling extract on sessionEntry object,didn't work too

how can i read the subZip files?

thanks in advance

Solution

  • After you copied the extracted content to the stream and before you read it, you need to manually reset the stream position, like so

    stream.Seek(0, SeekOrigin.Begin);