C#保留小数和百分数格式

          System.Globalization.NumberFormatInfo format = new System.Globalization.NumberFormatInfo();
            format.NumberDecimalDigits = 2;//小数点保留两位
            format.PercentDecimalDigits = 3;//百分数出现的小数点位数
            double s = 0.2267;
            //格式化小数点
            Console.WriteLine(s.ToString("N", format));//result:0.23
            Console.WriteLine(s.ToString("f2"));//result:0.23
            Console.WriteLine(s.ToString("N3"));//result:0.227
            Console.WriteLine(s.ToString("#0.00"));//result:0.23
            //格式化百分数
            Console.WriteLine(s.ToString("P", format));//result:22.670%

            string str1 = String.Format("{0:N1}", 56789); //result: 56,789.0
            string str2 = String.Format("{0:N2}", 56789); //result: 56,789.00
            string str3 = String.Format("{0:N3}", 56789); //result: 56,789.000
            string str8 = String.Format("{0:F1}", 56789); //result: 56789.0
            string str9 = String.Format("{0:F2}", 56789); //result: 56789.00
            string str11 = (56789 / 100.0).ToString("#.##"); //result: 567.89
            string str12 = (56789 / 100).ToString("#.##"); //result: 567

            Console.WriteLine(str1);
            Console.WriteLine(str2);
            Console.WriteLine(str3);
            Console.WriteLine(str8);
            Console.WriteLine(str9);
            Console.WriteLine(str11);
            Console.WriteLine(str12);
            Console.ReadLine();