要使用C#格式化输出,让我们看看格式化日期和双精度类型的示例。
将格式化的输出设置为Double类型。
using System; class Demo { public static void Main(String[] args) { Console.WriteLine("Three decimal places..."); Console.WriteLine(String.Format("{0:0.000}", 987.383)); Console.WriteLine(String.Format("{0:0.000}", 987.38)); Console.WriteLine(String.Format("{0:0.000}", 987.7899)); Console.WriteLine("Thousands Separator..."); Console.WriteLine(String.Format("{0:0,0.0}", 54567.46)); Console.WriteLine(String.Format("{0:0,0}", 54567.46)); } }
输出结果
Three decimal places... 987.383 987.380 987.790 Thousands Separator... 54,567.5 54,567
设置DateTime的格式化输出
using System; static class Demo { static void Main() { DateTime d = new DateTime(2018, 2, 8, 12, 7, 7, 123); Console.WriteLine(String.Format("{0:y yy yyy yyyy}", d)); Console.WriteLine(String.Format("{0:M MM MMM MMMM}", d)); Console.WriteLine(String.Format("{0:d dd ddd dddd}", d)); } }
输出结果
18 18 2018 2018 2 02 Feb February 8 08 Thu Thursday