relationship SQL C# with linq

Question

I'm studying Linq, I have a table with a relationship between processos.idProcesso and ProcessosDetalhe.id_ProcessosDetalhe, but, when I try to add the informations in DataBase, I get one error:

I tried to use the Add function, but, I can't use the add function in datacontex So, how I can solve that error ?? or, what I need to make in SQL to correct that error ?

Answer 1

The error mean that in your table ProcessosDetalhes, it has a foreign key reference to another table. The FK cannot have a value in that column that is not also in the primary key column of the referenced table.