c#判断网是否能连接

using System;
using System.Collections.Generic;
using System.Text;
using System.Net.NetworkInformation;
using System.Threading;

namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
Ping p = new Ping();//创建Ping对象p
PingReply pr = p.Send("123.145.68.1");//向指定IP或者主机名的计算机发送ICMP协议的ping数据包

if (pr.Status == IPStatus.Success)//如果ping成功
{
Console.WriteLine("网络连接成功, 执行下面任务...");
}
else
{
int times = 0;//重新连接次数;
do
{
if (times >= 12)
{
Console.WriteLine("重新尝试连接超过12次,连接失败程序结束");
return;
}

Thread.Sleep(600000);//等待十分钟(方便测试的话，你可以改为1000)
pr = p.Send("123.145.68.1");

Console.WriteLine(pr.Status);

times++;

}
while (pr.Status != IPStatus.Success);

Console.WriteLine("连接成功");
times = 0;//连接成功，重新连接次数清为0;
}
}
}
}