Entity Framework and MVC 3: The relationship could not be changed because one or more of the foreign-key properties is non-nullable

Question

I have been trying to use one View for updating an object and all its child collections (based on one-to-many relationships in an SQL Server database with an Entity Framewor

Answer 1

I think the error you are getting is related to: EF 4: Removing child object from collection does not delete it - why? You have created an orphan somewhere.