问题
Is there an easy solution for the following situation:
I've got an Entity Dossier which is shared in 2 DbContexts.
Dossier has 2 navigation properties, DossierType and DossierAttachment
Dossier
Dossier --> DossierType (Navigation Property)
Dossier --> DossierAttachment (Navigation Property)
I want to exclude the DossierType Entity in DbContext1. I do not want it to be savable to database, navigation properties should not be set.
I was expecting that calling
modelBuilder.Ignore<DossierType>();
in the DbContext1.OnModelCreating would be sufficient. It should make sure that my navigation property DossierType was not 'taken into context'.
It however gives following exception:
The navigation property 'DossierType' is not a declared property on type 'Dossier'. Verify that it has not been explicitly excluded from the model and that it is a valid navigation property.
This exception will keep coming unless I call the Ignore on the navigation property explicitly, which I do not want. (My reallife scenario has a lot more navigation properties, I do not want to iterate these)
modelBuilder.Entity<Dossier>().Ignore(x => x.DossierType);
Is there any easy way to ignore specific entity types in an easy straight forward manner? Or should I really go for a reflection way: declaring a list of types which I don't want and ignore them using reflection?
来源：https://stackoverflow.com/questions/27543396/entity-framework-code-first-ignore-complete-entity