正文C#中保留2位小数IP云V管理员/2022-08-21/0 阅读 08/21小程序:扫一扫查出行【扫一扫了解最新限行尾号】复制小程序 public static void Method() { double a = 1.991; a = Math.Round(a); Console.WriteLine("a = {0}",a); Console.WriteLine("a = {0}",a.ToString("0.00")); Console.WriteLine("a = {0:N2}",1.4); }