ThreadStart ts = new ThreadStart(method);
或者：
    Thread th = new Thread(method);

public void method(int input) {
        some_code();
}

// 当方法有参数时会报错，然而我需要传入参数，咋办

看下这个ParameterizedThreadStart

  Thread th = new Thread(new ParameterizedThreadStart(method));
  th.Start(param);