获取当前国家与ip地址

JS获取当前国家示例：

<script src="http://int.dpool.sina.com.cn/iplookup/iplookup.php?format=js"></script>
    <script>
        $(function () {
            var name = remote_ip_info["country"];
            document.getElementById("guojia").value = name;

        })
     </script>

<input style="display:none" id="guojia" name="country" value="" />

C#获取ip地址：

//获取当前IP
        public string GetIp()
        {
            System.Net.WebClient client = new System.Net.WebClient();
            client.Encoding = System.Text.Encoding.Default;
            string reply = client.DownloadString("http://www.ip138.com/ip2city.asp");
            int start = reply.IndexOf("[");
            int end = reply.IndexOf("]");
            return reply.Substring((start + 1), (end - start - 1));
        }