How can I simulate a “locked” file (one which has a write lock)

Question

I am trying to debug a problem where users occasionally have locked files which they try to open. The code appears to have correct exception handling but users are still report

Answer 1

depends, but in case, MS word locks
if you are wonderig if your application lock files and it do not relase locks:
just modify a bit your aplication (to create a testapp) and never close the file (and keep it runnig)