using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

    class Program
    {

        static void Main(string[] args)
        {
        start:
            Console.Write("实例调用耗时：");
            Test(() =>
            {
                for (int i = 0; i < 10; i++)
                {
                    new A().Test();
                }
            });
            Console.Write("静态调用耗时：");
            Test(() =>
            {
                for (int i = 0; i < 10; i++)
                {
                    B.Test();
                }
            });
            Console.WriteLine();
            Console.ReadKey();
            goto start;
        }

        static void Test(Action action)
        {
            double f = 0;
            for (int j = 0; j < 20; j++)
            {
                DateTime dt = DateTime.Now;
                System.Diagnostics.Stopwatch stop = new System.Diagnostics.Stopwatch();
                stop.Start();
                for (int i = 0; i < 1000000; i++) action();
                stop.Stop();
                TimeSpan time = stop.Elapsed;
                f += time.TotalMilliseconds;
            }
            Console.WriteLine(f / 20);
        }
    }

    class A
    {
        public void Test() { }
    }
    class B
    {
        public static void Test() { }
    }