Making A File Monitoring Tool - Filesystemwatcher

I am making a file monitoring tool, what's the best approach in doing that and it returned that I should use filesystemwatcher, others suggested a polling program.

Here's my the current scenario:

My server path (local): C:FilServer

List of folder to monitor for created event:
C:FilServerAB_Incoming - zip files
C:FilServerAC_Incoming - xml and tif files

List of folder to monito for deleted event:
C:FilServerAB_Outgoing - zip files
C:FilServerAC_Outgoing - xml and tif files

When the folder raises event, the detected file will be following this routine:

Move the file to d:ackup and copy to e:source[date][time] and write sumary log.