There is an unsaved comment in progress. You will lose your changes if you continue. Are you sure you want to reopen the work item?
Exception when file in use
1) Somehow make a file become "in-use" by another process (however you want)
2) Using SevenZip.SevenZipCompressor execute the BeginCompressFiles(string, string) method
A SevenZipSharp exception is returned. While I believe the proper way to handle a file being in use is via throwing an exception, I would expect an exception from System.IO not the generic SevenZipSharp exception. This would allow proper handling as we can determine it is due to IO.