IP Utils

using System.Net; using System.Net.Sockets; public static class IPUtils { /// <summary> /// Retrieve the local IP address of the current machine /// </summary> /// <returns>The local IP address (for example, 192.168.1.xxx</returns> public static string GetLocalIPAddress() { foreach (IPAddress ip in Dns.GetHostEntry(Dns.GetHostName()).AddressList) if (ip.AddressFamily == AddressFamily.InterNetwork) return ip.ToString(); return ""; } static string LastPublicIPAddress; /// <summary> /// Retrieve the public IP address of the current machine /// </summary> /// <returns>The public IP address</returns> public static string GetPublicIPAddress() { if (LastPublicIPAddress != null) return LastPublicIPAddress; using (var wc = new WebClient()) LastPublicIPAddress = wc.DownloadString("http://checkip.dyndns.org/").Split(':')[1].Trim().Split('<')[0]; return LastPublicIPAddress; } }