public retValue TD(string ID, int ModifyUser, int type = 0, int months = 0, int OrderNum = 0) { retValue ret = new retValue(); string res = dal.TD(ID, ModifyUser, type, months, OrderNum); if (string.IsNullOrEmpty(res)) { ret.result = true; ret.data = "退订成功"; } else { ret.result = false; ret.reason = res; } return(ret); }