C#获取本机局域网ip和公网ip

原文地址：/slyzly/articles/1965949.html

1。获取局域网ip

IPAddress ipAddr = Dns.Resolve(Dns.GetHostName()).AddressList[ 0 ]; // 获得当前IP地址

string ip = ipAddr.ToString() ;

2。获取公网ip

private static string GetIP()

{string tempip = "";try{WebRequest wr = WebRequest.Create("/ips138.asp");Stream s = wr.GetResponse().GetResponseStream();StreamReader sr = new StreamReader(s, Encoding.Default);string all = sr.ReadToEnd(); //读取网站的数据int start = all.IndexOf("您的IP地址是：[") + 9;int end = all.IndexOf("]", start);tempip = all.Substring(start, end - start);sr.Close();s.Close();}catch{}return tempip;}

3.如果是ADSL上网，获取公网ip

string tempIP =string.Empty;

if (.Dns.GetHostEntry(.Dns.GetHostName()).AddressList.Length >1)

tempIP = .Dns.GetHostEntry(.Dns.GetHostName()).AddressList[1].ToString();

分类: WinForm