Check CRC within Zip-Ebtries

Nov 14, 2011 at 5:05 PM


I get from time to time corrupted archives from our application, the archives are created with XCEEDZIP and the application cannot check the archive after creating (no verify possible).

Now I will made a tool to check the zip entries, to do this, I have tried to read/extract the archive with the Ionic Zip library. The archive content are secured with a password which is known, but my problem is to understand how I can read and extract the files using

Have anyone a example how I can use Ionic to check the CRC of all files in a first step, in a second step I will extract the files to, it is not allowed to save the data on the hard disk.

I hope to get a few suggestions to solve my problem :-)

Kind regards,

Nov 16, 2011 at 5:47 PM

Hi All,

in the mean while I could solved the problem with a Discussion-Entry here in the forum.

But one question I have, how can I get the TotalByteToExtract for all files? Only if I collect all files within the archive (zipentry) I can calculate the TotalBytes. If this the reigth way?