is it possible to add a new entity as added but all related entities as unchanged?

[ComptonAlvaro]

i am trying to add an entity as added state but I want that all the related entites are added recursivelly as unchanged.

I have tried:

dbContext.Entry(myEntity).State = EntityState.Added;

This add the entity as added but recursively all the related entites are added as added too.

dbContext.Attached(myEntity);

This add the entity as unchanged, so I have to chaged its status to add. All related entities are added as unchenged.

dbContex.MyType.Add(myEntity);

Add all the entities as added status.

dbContext.Update(myEntity) add my entity as modified, but I need to add as added.

So I don't know if it is possible to add one entity as added and rescursive all the reset as unchanged.

The entity that I am trying to add is a realtion entity:

MyEntity
{
long IDTableA;
long IDTableB;
}

IDTableA and IDTableB are not 0, so update adds it as modified. But I know that it doesn't exists (it is not a multiuser application so only one user uses the database) so I wanted to add it as added entity. Perhaps it would be posssible to add an entity with IDs as added because I know that It doens't exist and add the related entities as unchanged.

Thanks.

[ajcvickers]

@ComptonAlvaro If you are using generated keys and the new entity does not have a key value set, then Attach should work in EF Core 2.0. In other cases, or when using EF Core 1.1, use TrackGraph.