1 //获取内网IP
2 private string GetInternalIP()
3 {
4 IPHostEntry host;
5 string localIP = "?";
6 host = Dns.GetHostEntry(Dns.GetHostName());
7 foreach (IPAddress ip in host.AddressList)
8 {
9 if (ip.AddressFamily.ToString() == "InterNetwork")
10 {
11 localIP = ip.ToString();
12 break;
13 }
14 }
15 return localIP;
16 }
1 //获取外网IP
2 private string GetExternalIP()
3 {
4 string direction = "";
5 WebRequest request = WebRequest.Create("http://checkip.dyndns.org/");
6 using (WebResponse response = request.GetResponse())
7 using (StreamReader stream = new StreamReader(response.GetResponseStream()))
8 {
9 direction = stream.ReadToEnd();
10 }
11 int first = direction.IndexOf("Address:") + 9;
12 int last = direction.LastIndexOf("</body>");
13 direction = direction.Substring(first, last - first);
14 return direction;
15 }
