Entity Framework 4.1 Codefirst: “Given multiplicity constraints” error when deleting one-to-many children

Question

I have the following classes in Entity Framework 4.1 (the classes have been pruned to keep the code readable)

public class MetaInformation
{         


        

Answer 1

Echoing above comment, below code would solve your problem

DataContext.Dao.Db.MetaInformations.RemoveRange(workingMachine.MetaInformations);