用c#语言读入文本文档商品清单，计算总价格 将规则的几列数据放入文本文档，用c#语言读取数据计算并将结果写入数据，这种方法在计算采矿工程覆岩三带、surfer插分起伏地表建模等处有很大用处-With c# language reads text documents list of goods to calculate the total price will be several columns of data rules into your text document, reads the