public void ChangeSet() { User user = new User(); user.Id = 1L; user.Name = "John Dow"; user.Status = EAccountStatus.ACTIVE; proxy.Write(user); IdQuery <User> idQuery = new IdQuery <User>(1L); IChangeResult <User> changeResult = proxy.Change <User>(idQuery, new ChangeSet().Set("Name", "Testing")); if (changeResult.NumberOfChangedEntries == 0) { Console.WriteLine("Entry does not exist"); } }