Entity Framework: Re-finding objects recently added to context

Question

I am using the entity framework and I\'m having a problem with \"re-finding\" objects I just created... basically it goes like this:

string theId = \"someId         


        

Answer 1

The extension method bellow is to DbSet<>

public static T TryAttach(this DbSet dbSet, T entity, Expression> predicate) where T : class
{
     T found = dbSet.Local.SingleOrDefault(predicate.Compile());
     if (found == null) dbSet.Attach(entity);
     return found ?? entity;
}

How to use:

contextInstance.MyEntity.TryAttach(entityInstance, e => e.ID == entityInstance.ID);

btw: I love generics!