I make many to many relationship in erd diagram in sql server 2005 between car and driver as following
car table
driver table
car_driver table.
I need to make fleet management program. When I make forms in windows form are i make
 car form
driver form
car_driver form
When i insert data are creating three forms each form insert to related tables
car table car form
driver table driver form
car_driver table car_driver form

Hello Ahmed,

Thank you for contacting us.

I read your question, but It does not seem to be related to our UI for WinForms. It appears that this is a general programming question about an application design. If that is the case, then I suggest you to ask such questions in a General Programming forum such as StackOverflow.

If you have questions related to our controls or you think that I misunderstood it, please elaborate and I will do my best to help you.

Regards,
George
Telerik