/// <summary>
        /// 验证数据的合法性
        /// </summary>
        /// <param name="model"></param>
        /// <returns></returns>
        private string CheckAddInfor(MTFCEvidenceInfor model)
        {
            if (string.IsNullOrEmpty(model.userName))
            {
                return("姓名必填!");
            }

            if (string.IsNullOrEmpty(model.telNum))
            {
                return("手机号码必填!");
            }

            if (!PublicTools.CheckIsPhonNum(model.telNum))
            {
                return("手机号码格式有误!");
            }

            //// 检查手机号码是否已经被使用
            if (new TFCEvidenceInforService().CheckPhonHasUser(model.telNum) > 0)
            {
                return("该手机号码已经提交过数据!");
            }

            if (string.IsNullOrEmpty(model.roomNum))
            {
                return("房号必填!");
            }

            if (model.payAmount <= 0)
            {
                return("金额必填,且必须为正数!");
            }

            if (string.IsNullOrEmpty(model.payDate))
            {
                return("购买日期必填!");
            }

            return(string.Empty);
        }