C# const与readonly的详细用法

class Program
    {
        static void Main(string[] args)
        {
            Console.ForegroundColor = ConsoleColor.Green;
            //直接使用const值
            Console.WriteLine(sample.constValue);
            //实例化对象后使用
            sample2 s2 = new sample2();
            Console.WriteLine(s2.readonlyValue);
            Console.Read();
        }
        class sample
        {
            public const int constValue = 10;
        }
        class sample2
        {
            public readonly int readonlyValue = 20;
        }

    }