C#检查IP地址是否通讯

        /// <summary>
        /// 用于检查IP地址或域名是否可以使用TCP/IP协议访问(使用Ping命令),true表示Ping成功,false表示Ping失败 
        /// </summary>
        /// <param name="strIpOrDName">输入参数,表示IP地址或域名</param>
        /// <returns></returns>
        public static bool PingIpOrDomainName(string strIpOrDName)
        {
            try
            {
                Ping objPingSender = new Ping();
                PingOptions objPinOptions = new PingOptions();
                objPinOptions.DontFragment = true;
                string data = "";
                byte[] buffer = Encoding.UTF8.GetBytes(data);
                int intTimeout = 120;
                PingReply objPinReply = objPingSender.Send(strIpOrDName,intTimeout, buffer, objPinOptions);
                string strInfo = objPinReply.Status.ToString();
                if (strInfo == "Success")
                {
                    return true;
                }
                else
                {
                    return false;
                }
            }
            catch (Exception)
            {
                return false;
            }
        }