类的代码如下:
1 using System; 2 using System.Net; 3 using System.Text.RegularExpressions; 4 5 namespace Keleyi.Com 6 { 7 public class GetInternetIP 8 { 9 public static string GetIP() 10 { 11 using (var webClient = new WebClient()) 12 { 13 try 14 { 15 var temp = webClient.DownloadString("http://iframe.ip138.com/ic.asp"); 16 var ip = Regex.Match(temp, @"[(?<ip>d+.d+.d+.d+)]").Groups["ip"].Value; 17 return !string.IsNullOrEmpty(ip) ? ip : null; 18 } 19 catch (Exception ex) 20 { 21 return ex.Message; 22 } 23 } 24 } 25 } 26 }