Task多线程，带返回值，带参数，并等待所有线程返回

 public void TestMethod1()
        {
            var strArr = new string[25];
            var list = new List<string>();
            for (int i = 0; i < 25; i++)
            {
                strArr[i] = i.ToString();
            }
            var numb = 10;
            var integer = strArr.Length / numb;
            var remainder = strArr.Length % numb;
            var tNumb = integer == 0 ? integer : integer + 1;

            if (integer <= 0)
            {
                //直接执行，不开线程
            }
            else
            {

                Task<List<string>>[] tasks = new Task<List<string>>[tNumb];

                for (int i = 0; i < integer; i++)
                {
                    var arrs = new string[numb];
                    var p = (i * numb);
                    Array.Copy(strArr, p, arrs, 0, numb);
                    Func<List<string>> fun = ()=> vvvv(arrs);
                    tasks[i] = Task.Factory.StartNew(fun);
                }
                if (remainder > 0)
                {
                    var arrs = new string[remainder];
                    Array.Copy(strArr, integer * numb, arrs, 0, remainder);
                    tasks[tNumb - 1]  = Task.Factory.StartNew<List<string>>(() => vvvv(arrs));
                }
                var overTask = 0;
                while (overTask != tasks.Length)
                {
                    for (int i = 0; i < tasks.Length; i++)
                    {
                        if ((tasks[i] != null) && ((tasks[i].IsCanceled || tasks[i].IsCompleted) || tasks[i].IsFaulted))
                        {
                            list.AddRange(tasks[i].Result);
                            tasks[i].Dispose();
                            tasks[i] = null;
                            overTask++;
                        }
                    }
                }
                var www = list.Distinct().ToList();
            }
        }

        public List<string> vvvv(string [] arrs )
        {
            var lists = new List<string>();
            for (int e = 0; e < arrs.Length; e++)
            {
                lists.Add(arrs[e]);
            }
            return (lists);
            //执行代码。
        }