hI, i got this error after I change my model class name from "Product" to "Bill".
One or more validation errors were detected during model generation:
WingtipToys.Models.Bill: : EntityType 'Bill' has no key defined. Define the key for this EntityType.
Bills: EntityType: EntitySet 'Bills' is based on type 'Bill' that has no keys defined.
Anyone knows how to fix this?