WhenAll 与 WaitAll 的区别

     #region   async    Task    await
        /// <summary>
        /// commit
        /// </summary>
        /// <param name="mallCode">code</param>
        /// <returns>json</returns>
        [HttpGet]
        public async Task<ResultDataModel<JObject>> TaskTest(string mallCode)
        {


            var gameQQ = GameQQ(1, 2);
            var gameWX = GameWX(1, 2);
            var gameLOL = GameLOL(1, 2);

            var breakfastTasks = new List<Task> { gameQQ, gameWX, gameLOL };
            //while (breakfastTasks.Count > 0)
            //{
            //    Task finishedTask = await Task.WhenAny(breakfastTasks);//任何提供的任务已完成时，创建将完成的任务。  WhenAll
            //    if (finishedTask == gameQQ)
            //    {
            //        System.Diagnostics.Debug.WriteLine("gameQQ 开完");
            //    }
            //    else if (finishedTask == gameWX)
            //    {
            //       System.Diagnostics.Debug.WriteLine("GameWX 发完");
            //    }
            //    else if (finishedTask == gameLOL)
            //    {
            //       System.Diagnostics.Debug.WriteLine("GameLOL 打完");
            //    }
            //    breakfastTasks.Remove(finishedTask);
            //}




            //主线程（当前请求）等和不等的区别  ,返回值为Task
            //Task.WhenAll(breakfastTasks);
            //await Task.WhenAll(breakfastTasks);


            Task.WaitAll(breakfastTasks.ToArray()); //与 WhenAll 相比，返回值为void 。和写了  await 的WhenAll 没有区别
            int asd = 0;//其他代码

            return StateMessage.GetSuccess("1000", "",  new JObject());

        }

        private async Task<int> GameQQ(int password,int account)
        {
            await Task.Delay(3000);
           System.Diagnostics.Debug.WriteLine("GameQQ");
            return 0;
        }
        private async Task<int> GameWX(int password, int account)
        {
            await Task.Delay(1000);
           System.Diagnostics.Debug.WriteLine("GameWX");
            return 1;
        }


        private async Task<int> GameLOL(int password, int account)
        {
            await Task.Delay(500);
           System.Diagnostics.Debug.WriteLine("GameLOL");
            return 2;
        }


        #endregion

　　WaitAll  为 void ，WhenAll 为 task。 用法无区别