问如何检查特定的IP地址是否连接到网络

EN

Ping ping = new Ping ();
IPAddress address = IPAddress.Parse("000.000.000.000");
PingReply pong = pingSender.Send(address);

if (pong.Status == IPStatus.Success)
{
  // your machine at address is up and responding
}

using System;
using System.Net;
using System.Net.NetworkInformation;

public class Program
{
    public static void Main()
    {
        Ping ping = new Ping();
        //change the following ip variable into the ip adress you are looking for
        string ip = " ";
        IPAddress address = IPAddress.Parse(ip);
        PingReply pong = ping.Send(address);
        if (pong.Status == IPStatus.Success)
        {
            Console.WriteLine(ip + " is up and running.");
        }
    }
}