File size increase when updating a file

Jul 8, 2016 at 7:41 AM
I have a file that its original size is 68KB, using ClosedXML to open and update two fields the file size jumps to 1007KB.

My problem is that if im updating circa 500 rows in a spreadsheet what will the file size be after this and is there a way that I can avoid such a massive jump in file size.
Jul 19, 2016 at 11:40 AM
I have the same problem. Any solution?