private void button1_Click_1(object sender, EventArgs e)

        {

            Ping p = new Ping();

            p.PingCompleted += new PingCompletedEventHandler(test);//1

            //p.PingCompleted += test;//2

            p.SendAsync("192.168.1.101", 1);

        }



        private void test(object sender, PingCompletedEventArgs e)

        {

            if (e.Reply.Status == IPStatus.Success)

            {

                MessageBox.Show("成功");

            }

            else

            {

                MessageBox.Show("失败");

            }



        }