开门见山，下面的例子中通过调用ThreadPool.QueueUserWorkItem(WaitCallback callBack, object state)的方式实现异步调用：
class Program
2: {
string[] args)
4: {
new List<Action>();
));
));
));
));
10:
in actions)
12: {
null);
14: }
15:
16: Console.Read();
17: }
18: }