为了使小数点前的数字四舍五入,我们可以使用方法,这是示例。String.Format()
using System; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { //小数点前至少两位数 Console.WriteLine("Minimum Two digits before decimal point"); Console.WriteLine(String.Format("{0:00.0}", 12512.4567)); Console.WriteLine(String.Format("{0:00.0}", 512.4567)); Console.WriteLine(String.Format("{0:00.0}", 2.4567)); Console.WriteLine(String.Format("{0:00.0}", -2.4567)); //小数点前至少三位数 Console.WriteLine("Minimum Three digits before decimal point"); Console.WriteLine(String.Format("{0:000.0}", 12512.4567)); Console.WriteLine(String.Format("{0:000.0}", 12.4567)); Console.WriteLine(String.Format("{0:000.0}", 2.4567)); Console.WriteLine(String.Format("{0:000.0}", -2.4567)); Console.WriteLine(); } } }
输出结果
Minimum Two digits before decimal point 12512.5 512.5 02.5 -02.5 Minimum Three digits before decimal point 12512.5 012.5 002.5 -002.5