decimal类型四舍五入和保留两位小数

1. 保留两位小数

   var price = 44.1236912;
   price.ToString("#0.00");
2. 四舍五入并保留两位小数

   var price = 66.5819632;
   price = decimal.Round(price, 2, MidpointRounding.AwayFromZero);