C#---StopWatch类

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1.StopWatch

提供一组方法和属性，可用来测量运行时间。

1.1 属性和方法

属性：

方法：

1.2 使用

using System.Diagnostics;

namespace Study04_反射专题
{
    internal class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Hello, World!");

            // 提供一组方法和属性，可用于准确地测量运行时间。
            Stopwatch stopwatch = new Stopwatch();
            stopwatch.Restart();
            Thread.Sleep(1000); // 模拟耗时操作
            Console.WriteLine(stopwatch.ElapsedMilliseconds);
            stopwatch.Restart();
            Console.WriteLine(stopwatch.ElapsedMilliseconds);

            Computer computer = new Computer();
            MeasureTimeHelper.Measure(null, () => computer.Add(1, 10000000), out long time);
            Console.WriteLine(string.Format("使用{0}ms",time));

            Console.ReadKey();
        }
    }


    public class Computer
    {
        public void Add(int a, int b)
        {
            int sum = 0;
            for (int i = a; i < b; i++)
            {
                sum += a;
            }
            Console.WriteLine(sum);
        }
    }


    public static class MeasureTimeHelper
    {
        public static void Measure(this object obj, Action action, out long time)
        {
            time = 0;
            try
            {
                Stopwatch stopwatch = new Stopwatch();
                stopwatch.Restart();
                action?.Invoke();
                stopwatch.Stop();
                time = stopwatch.ElapsedMilliseconds;
            }
            catch (Exception ex)
            {
                Debug.WriteLine(ex);
            }
        }
    }
}