Carlos,
I understand that the private files will still show in the Workspace Explorer. I obviously don't want them checking in by mistake, so would like them not visible on the Pending Changes screen, which is what I'm trying to do.
The 'show ignored items' option is definitely unchecked.
I've attached a screenshot - I've had to blank out the project name. The entry underlined in red is one that I right clicked add added to the ignore.conf, and it does get removed from the list, however, the next two items which are inside that folder, still remain in the pending changes list, when I would expect them not to.
Additionally, it only added /src/PROJECT/obj/xdoc/cache/obj to the ignore.conf anyway, which is what I've already tried to add manually myself anyway.
In addition to that, the /src/project/obj folder is already ignored by default anyway, to ignore all the intermediate c# build artifacts, which is why I was surprised when the pending changes view started showing all these files.