Does EF upsert have to be done manually?

Question

I want to upsert reference members of an existing entity.

Do I have to write specific code for the upsert?

meaning: I have to check if I\'m handling an existing

Answer 1

public void InsertOrUpdate(DbContext context, UEntity entity)
{
    context.Entry(entity).State = entity.Id == 0 ?
                                   EntityState.Added :
                                   EntityState.Modified;
    context.SaveChanges();
}

http://forums.asp.net/t/1889944.aspx/1