Jonathan Neil (Edwards Sound, Lighting & AV) has shared his experiences with the conversion of a very Inventory Tracking application, written first in Clipper and later in Visual Objects 2.7 to X#.
You can find his article here.
Important in this article is his experience that migrating his application to X# and recompiling it in X# has helped him to solve several ( 40+ ) serious errors in his VO code that the VO compiler had missed. Fixing these errors helped to make his VO application more stable (while working on the migration to X#).
Jonathan has also shared his experience with the Dev Express XtraScheduler control in the following forum post:
https://www.xsharp.eu/forum/public-product/3239-job-and-employee-scheduler#25898