anyone could answer plz

If you want to add several controls(panels in your case) to the same form and Dock them all as Fill, below is the best solution: - Add Custom user controls to your Project, each of them containing one of the panels. - Add these controls to your form and dock them as Fill. Now if you want to edit one of the panels, simply edit the custom user control you created ;)

I don't have any examples at hand but there are a few open source PMS systems out there so do a search and see how they have approached the problem. It's a fundamental requirement for both PMS and CRS systems. Regards Rob Architecture is extensible, code is minimal.

Paying someone to do your homework is immoral ;) The 3-legged stool of understanding is held up by history, languages, and mathematics. Equipped with these three you can learn anything you want to learn. But if you lack any one of them you are just another ignorant peasant with dung on your boots. R. A. H.