通过WebRequest类访问得到IP：
System.Net.WebRequest wReq = System.Net.WebRequest.Create("http://ip.chinaz.com/getip.aspx");//站长工具提供Ip地址
System.Net.WebResponse wResp = wReq.GetResponse();
System.IO.Stream respStream = wResp.GetResponseStream();
using (System.IO.StreamReader reader = new System.IO.StreamReader(respStream, Encoding.GetEncoding("utf-8")))
{
var json = new JavaScriptSerializer().Deserialize<ipModel>(reader.ReadToEnd());
return json.ip;
}
反序列化时用到的类：
/// <summary> /// IP访问返回类 /// </summary> public class ipModel { public string ip { get; set; } public string address { get; set; } }
注意：得到是外网IP，并非局域网IP
原文：http://www.cnblogs.com/zqt14520/p/5915629.html