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copied!<p>I don't know where I got this code from anymore. The last piece of code is from me (getIPAddress())</p> <p>It reads your ip to get the base ip of the network.</p> <p>Credits go to the author:</p> <pre><code>static void Main(string[] args) { string ipBase = getIPAddress(); string [] ipParts = ipBase.Split('.'); ipBase = ipParts[0] + "." + ipParts[1] + "." + ipParts[2] + "."; for (int i = 1; i < 255; i++) { string ip = ipBase + i.ToString(); Ping p = new Ping(); p.PingCompleted += new PingCompletedEventHandler(p_PingCompleted); p.SendAsync(ip, 100, ip); } Console.ReadLine(); } static void p_PingCompleted(object sender, PingCompletedEventArgs e) { string ip = (string)e.UserState; if (e.Reply != null && e.Reply.Status == IPStatus.Success) { if (resolveNames) { string name; try { IPHostEntry hostEntry = Dns.GetHostEntry(ip); name = hostEntry.HostName; } catch (SocketException ex) { name = "?"; } Console.WriteLine("{0} ({1}) is up: ({2} ms)", ip, name, e.Reply.RoundtripTime); } else { Console.WriteLine("{0} is up: ({1} ms)", ip, e.Reply.RoundtripTime); } lock (lockObj) { upCount++; } } else if (e.Reply == null) { Console.WriteLine("Pinging {0} failed. (Null Reply object?)", ip); } } public static string getIPAddress() { IPHostEntry host; string localIP = ""; host = Dns.GetHostEntry(Dns.GetHostName()); foreach (IPAddress ip in host.AddressList) { if (ip.AddressFamily == AddressFamily.InterNetwork) { localIP = ip.ToString(); } } return localIP; } </code></pre>

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