得到真实外网IP、IP所在国家、省份、地区

#region##得到真实IP以及所在地详细信息
///<summary>
/// 得到真实IP以及所在地详细信息（Porschev）
///</summary>
///<returns></returns>
public string GetIpDetails()
{
string url = "http://www.ip138.com/ips8.asp";   //设置获取IP地址和国家源码的网址
string regStr = "(?<=<td\\s*align=\\\"center\\\">)[^<]*?(?=<br/><br/></td>)";
string ipRegStr = "((2[0-4]\\d|25[0-5]|[01]?\\d\\d?)\\.){3}(2[0-4]\\d|25[0-5]|[01]?\\d\\d?)";    //IP正则
string ip = string.Empty;   //IP地址
string country = string.Empty;  //国家
string adr = string.Empty;   //省市
string html = GetHtml(url);       //得到网页源码
Regex reg = new Regex(regStr, RegexOptions.None);
Match ma = reg.Match(html);        html = ma.Value;
Regex ipReg = new Regex(ipRegStr, RegexOptions.None);
ma = ipReg.Match(html);
ip = ma.Value;     //得到IP
int index = html.LastIndexOf("：") + 1;
country = html.Substring(index);                   //得到国家
adr = GetAdrByIp(ip);
return "IP：" + ip + "  国家：" + country + "  省市：" + adr;
}
#endregion

#region##通过IP得到IP所在地省市
///<summary>
/// 通过IP得到IP所在地省市（Porschev）
///</summary>
///<param name="ip"></param>
///<returns></returns>
public string GetAdrByIp(string ip)
{
string url = "http://www.cz88.net/ip/?ip=" + ip;
string regStr = "(?<=<span\\s*id=\\\"cz_addr\\\">).*?(?=</span>)";
string html = GetHtml(url);       //得到网页源码
Regex reg = new Regex(regStr, RegexOptions.None);
Match ma = reg.Match(html);
html = ma.Value;
string[] arr = html.Split('');
return arr[0];
}
#endregion

#region##获取HTML源码信息
///<summary>
/// 获取HTML源码信息(Porschev)
///</summary>
///<param name="url">获取地址</param>
///<returns>HTML源码</returns>
public string GetHtml(string url)
{
Uri uri = new Uri(url);
WebRequest wr = WebRequest.Create(uri);
Stream s = wr.GetResponse().GetResponseStream();
StreamReader sr = new StreamReader(s, Encoding.Default);
return sr.ReadToEnd();
}
#endregion