/// <summary>

        /// 金额

        /// </summary>

        public decimal tax_amount { get; set; }

        /// <summary>

        /// 如是整数，则直接显示整数

        /// </summary>

        public string tax_amountFormat {

            get { return tax_amount.ToString("0.##"); }

         }

        /// <summary>

        /// 如是整数，则后面会有两位小娄，如2.00

        /// </summary>

        public string tax_amountFormat2

        {

            get { return tax_amount.ToString("0.00"); }

        }

        /// <summary>

        /// 如是整数，则后面会有两位小娄，如2.00

        /// </summary>

        public string tax_amountFormat3

        {

            get { return tax_amount.ToString("f2"); }

        }