对数值保存两位小数,有时是整数时,不需要显示两位小数。例如值为:1.32 保留两位,结果是1.32,值为:2,结果有两种显示,2和2.00

  /// <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"); }

        }

 

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