using System;

using System.Collections.Generic;

using System.Diagnostics;

using System.Net.Http;

using System.Threading.Tasks;

​

class Program

{

    //static string APIEndPoint = "https://businessblazor.azurewebsites.net/api/RemoteService/Add/8/9/10000";

    static string APIEndPoint = "https://businessblazor.azurewebsites.net/api/RemoteService/AddAsync/8/9/10000";

    static int 最多同時呼叫API數量 = 1;

    static async Task Main(string[] args)

    {

        Stopwatch sw = new Stopwatch();

        sw.Start();

        #region 大量呼叫 Web API

        List<Task<string>> tasks = new List<Task<string>>();

        for (int i = 0; i < 最多同時呼叫API數量; i++)

        {

            int idx = i;

            HttpClient client = new HttpClient();

            Task<string> task = client.GetStringAsync(APIEndPoint);

            tasks.Add(task);

        }

        await Task.WhenAll(tasks);

        foreach (var item in tasks) { Console.WriteLine(item.Result); }

        #endregion

        sw.Stop();

        Console.WriteLine($"花費時間: {sw.ElapsedMilliseconds} ms");

        Console.WriteLine("Press any key for continuing...");

        Console.ReadKey();

    }

}

​