Other: Download CSV-list of students from the Participants list
Enable the ability to download a CSV-list of students from the Participants list. The CSV file should also contain groups students belong to.
Maintained by: 
Kirill Astashov
Enable the ability to download a CSV-list of students from the Participants list. The downloaded CSV file should also contain groups students belong to.
Warning:
The patch is meant to be used with PostgreSQL database only, sorry.
Installation:
* Apply patch.
Developed by NetSpot, Australia.
Funded by the University of New South Wales.
Screenshots
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Thanks for the patch, again, like the import groups offline patch, i think this could be refined either into core or an admin tool. Have you considered this? i think a tracker issue might garner some help in doing this.
I've now approved this patch within the Other category. You will need to submit a new entry if you convert it to an actual plugin.
Thanks
No installation is required, just apply the patch (code changes) and that's it.
I tried to use your code to patch my moodle (v2.5). I do not know anything about the patch install so I modified the files manually and I created the exportcsv.php file. Unfortunately, I failed, because the system displayed an error message (""). Could you help me to implement the code in Moodle 2.5?
Thanks,
Andrew