C#_判断本机是否联网

方法其实很简单，用的是System.Net.NetworkInformation.Ping与System.Net.NetworkInformation.PingReply。也就是ping方法。

代码如下：

using System;
using System.Collections.Generic;
using System.Text;

namespace isConnInternet
{
    public class IsConnInt
    {
        public bool isConn()
        {
            System.Net.NetworkInformation.Ping ping;
            System.Net.NetworkInformation.PingReply res;
            ping = new System.Net.NetworkInformation.Ping();
            try
            {
                res = ping.Send("www.baidu.com");
                if (res.Status != System.Net.NetworkInformation.IPStatus.Success)
                    return false;
                else
                    return true;
            }
            catch (Exception er)
            {
                return false;
            }
        }
    }
}