private void button1_Click(object sender, EventArgs e)
{
var rnd = new Random();
var taskList = new TaskList();
for (var i = 0; i < 100; i++)
{
var s = rnd.Next(10);
var j = i;
var testTask = new Action(() =>
{
Console.WriteLine(string.Format("第{0}个任务（用时{1}秒）已经开始", j, s));
Thread.Sleep(s * 1000);
outStatus?.Invoke(j.ToString());
Console.WriteLine(string.Format("第{0}个任务（用时{1}秒）已经结束", j, s));
});
taskList.Tasks.Add(testTask);
}
taskList.Completed += () => Console.WriteLine("____________________没有更多的任务了！");
taskList.Start();
}