decimal類型四捨五入和保留兩位小數

1. 保留兩位小數

   var price = 44.1236912;
   price.ToString("#0.00");

    

2. 四捨五入並保留兩位小數

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