private void changeCredit(string objectId, int addCredit) { _User user = userbll.QuerySingleById(objectId); userbll.UpdateById(objectId, new Dictionary <string, Object>() { { "credit", user.credit + addCredit }, }); CreditsHistoryBLL chBll = new CreditsHistoryBLL(); chBll.Insert(new CreditsHistory() { objectId = Guid.NewGuid().ToString(), createdAt = DateTime.Now, updatedAt = DateTime.Now, userId = user.objectId, type = 0, change = addCredit, credit = user.credit + addCredit }); }