The object cannot be attached because it is already in the object context

Question

im trying to update a record in the database and it errors, i know the entry is there

            Order od = null;
            od = _session.Single<Order>(x => x.OrderId == OrderId);
            if (od != null)
            {
                od.PricePaid = svm.price;
                _session.Update(od);
                _session.CommitChanges();

but im getting

The object cannot be attached because it is already in the object context. An object can only be reattached when it is in an unchanged state.

Help please :)

Answer 1

省略代码的_session.Update(od)部分，它应该可以工作。