Hi Per Olof Ohlsson,
Thank you for your interest in Syncfusion products.
We have prepared the sample to illustrate your requirement to compress and un-compress archive files using Syncfusion compression. Please find the sample from the attachment. Try running the sample and let us know if this helps you.
Please let us know if you have any other questions.
Regards,
Gunasekaran
Sample_4c3632eb.zip