private void NewTerminal()
        {
            TB_Terminal t = null;

            // 如果没有输入Sim卡号码则查询是否具有相同终端号码的记录
            if (string.IsNullOrEmpty(txtSimcard.Value.Trim()))
            {
                t = TerminalInstance.Find(f => f.Number.Equals(txtNumber.Value.Trim()) && f.Delete == false);
            }
            else
            {
                // 如果有Sim卡号码输入则查询终端或Sim卡号码是否有相同记录存在
                t = TerminalInstance.Find(f => (f.Number.Equals(txtNumber.Value.Trim()) || f.Sim.Equals(txtSimcard.Value.Trim())) && f.Delete == false);
            }

            if (null != t)
            {
                ShowNotification("./terminal_register.aspx", "Terminal exist: " + TerminalInstance.ToString(t), false);
            }
            else
            {
                t = TerminalInstance.GetObject();
                BuildObject(t);
                TerminalInstance.Add(t);

                SaveHistory(new TB_AccountHistory
                {
                    ActionId = ActionInstance.Find(f => f.Name.Equals("AddTerminal")).id,
                    ObjectA  = TerminalInstance.ToString(t)
                });

                ShowNotification("./terminal_list.aspx", "You added a new terminal: " + TerminalInstance.ToString(t));
            }
        }