Excluding user-added files from a folder at runtime
<p>I have a winforms application. In its folder, (eg .../WinformsApp/Reports), there are several files.</p>

<p>Is there a way to ensure that if the user adds files to this folder, the app will not include them? At the moment the app gets all the files in the folder, but I don't want the app to include user-added folders.</p>

<p>It is possible to say "Get all the files, get a count, if at any time the file count is greater than the previous count ("get a count"), then the user has added files and do whatever.". Would this approach be reliable?</p>

<p>Thanks</p>
