Code：

1 ///
  2 /// ToStringFormat  3 /// 创建人：Carl.Yang  4 /// 创建日期：2011-11-11  5 ///
  6 ///  7         static void Main(string[] args)  8         {
    9             decimal price1 = 99.6547M; 10             decimal price2 = 99.6544M; 11 12             //要截取的长度 13             int length = 3; 14             //F03 15             string format = string.Format("F0{0}", length); 16 17             Console.WriteLine(price1.ToString(format)); 18             Console.WriteLine(price2.ToString(format)); 19             Console.ReadLine(); 20         }

输出结果：

//99.655 //99.654