多种方式收费解决方案

核心算法:

        /// <summary>
        /// 计算付款明细
        /// </summary>
        /// <param name="cpy_account"></param>
        /// <param name="tmp"></param>
        /// <param name="tmp_row"></param>
        /// <returns></returns>
        private decimal Settlement(decimal cpy_account, ref decimal tmp, ref decimal tmp_row)
        {
            decimal sy_account = 0;//剩余应付

            if (cpy_account > 0)
            {
                if (tmp >= cpy_account)
                {
                    tmp_row = cpy_account;
                    tmp -= cpy_account;
                }
                else
                {
                    tmp_row = tmp;
                    tmp = 0;
                    sy_account = cpy_account - tmp_row;
                }
            }
            return sy_account;
        }
        /// <summary>
        /// 执行结算
        /// </summary>
        /// <param name="cpy_account"></param>
        /// <param name="tmpList"></param>
        /// <returns></returns>
        private List<decimal> SettlementRun(decimal cpy_account, List<decimal> tmpList)
        {
            List<decimal> decList = new List<decimal>();

            decimal sy_account = cpy_account;
            for (int i = 0; i < tmpList.Count; i++)
            {
                decimal tmp = tmpList[i];
                decimal tmp_row = 0;
                sy_account = Settlement(sy_account, ref tmp, ref tmp_row);
                tmpList[i] = tmp;

                decList.Add(tmp_row);
            }

            return decList;
        }

调用执行:

        List<decimal> tmpList = new List<decimal>() { xj1, xj2, xj3, sk1, sk2, sk3, sk4, fq1, fq2, fq3, fq4, fq5, fq6, fq7, dsf1, dsf2, dsf3, dsf4, qt1, qt2, qt3 };
        ///收费明细循环
        ///
        foreach (DataRow dataRow in ctmzpts.Rows)
        {
　　　　　　　//明细行应付金额
　　　　　　　decimal cpy_account = dataRow["cpy_account"].ToDecimal(); 

            List<decimal> decList = SettlementRun(cpy_account, tmpList);
            decimal xj1_row = decList[0];
            decimal xj2_row = decList[1];
            decimal xj3_row = decList[2];
            decimal sk1_row = decList[3];
            decimal sk2_row = decList[4];
            decimal sk3_row = decList[5];
            decimal sk4_row = decList[6];
            decimal fq1_row = decList[7];
            decimal fq2_row = decList[8];
            decimal fq3_row = decList[9];
            decimal fq4_row = decList[10];
            decimal fq5_row = decList[11];
            decimal fq6_row = decList[12];
            decimal fq7_row = decList[13];
            decimal dsf1_row = decList[14];
            decimal dsf2_row = decList[15];
            decimal dsf3_row = decList[16];
            decimal dsf4_row = decList[17];
            decimal qt1_row = decList[18];
            decimal qt2_row = decList[19];
            decimal qt3_row = decList[20];

　　　　　  　//TODO...
　　　　　}

 看不懂说明用不到，用到了就能看懂了^-^