Error An Invalid Ip Address Was Specified
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them; it only takes a minute: Sign up Error “An invalid IP address was specified” when typed a number below “100” in 2nd and 3rd part up vote 1 down vote favorite I have this code: private void TestConnect() { while (t.IsAlive) { System.Net.Sockets.TcpClient client = new TcpClient(); try { client.Connect(IPAddress.Parse("187.84.191.50"), 80)); this.Invoke(new SetLabel(SetLabelStatus), "Open connection, active host."); } catch error index of the interface. invalid ip address (SocketException ex) { this.Invoke(new SetLabel(SetLabelStatus), "Unable to connect, error: \n" + ex.Message + "\nTrying again..."); } finally { client.Close(); } } } It works fine when I type an address like 173.194.118.71 (a.k. Google), but if I type an address like this: 187.84.191.50 The error "An invalid IP address was specified" returns to code. So how can I cast the IP address correctly using the IPAddress.Parse() method? c# share|improve this question asked Oct 6 '14 at 17:45 Matheus Gelinski 101111 1 Do you even need the IPAddress.Parse? normally .Connect("IP ADDY") works fine. –boomoto Oct 6 '14 at 17:48 client.Connect(IPAddress.Parse("187.84.191.50"), 80)); should be client.Connect(IPAddress.Parse("187.84.191.50"), 80); Otherwise it works fine. –Pete Oct 6 '14 at 17:50 1 your code runs fine for me, after fixing the syntax problems –Jonesopolis Oct 6 '14 at 17:51 1 IPAddress.Parse("187.84.191.50") does not throw an exception for me. Neither does client.Connect(IPAddress.Parse("187.84.191.50"), 80)) –Peter Ritchie Oct 6 '14 at 17:52 I strongly suspect that you have a comma that has leaked into your address and it jus
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Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask fix invalid ip address Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign http://stackoverflow.com/questions/26221807/error-an-invalid-ip-address-was-specified-when-typed-a-number-below-100-in-2 up Cant parse domain into IP in C#? up vote 4 down vote favorite 1 I have this code: IPEndPoint serverEndPoint = new IPEndPoint(IPAddress.Parse(txtBoxIP.Text), MainForm.port); When I have an IP in the txtBoxIP (192.168.1.2) for example, it works great. But if i want to put a DNS? like i'm putting (my.selfip.com) i get: System.FormatException: An invalid IP address was specified. at System.Net.IPAddress.InternalParse(String ipString, http://stackoverflow.com/questions/6498829/cant-parse-domain-into-ip-in-c Boolean tryParse) How can i make it support both IP and DNS ? Thanks :) c# .net dns ip share|improve this question edited Jun 27 '11 at 21:02 user7116 47.5k11100146 asked Jun 27 '11 at 20:54 Danpe 7,875961111 3 I've removed the parsing tag as the conversion of a hostname into an IP is known as "address resolution" rather than "parsing". –user7116 Jun 27 '11 at 21:03 add a comment| 6 Answers 6 active oldest votes up vote 8 down vote accepted IPAddress ipAddress; if (!IPAddress.TryParse (txtBoxIP.Text, out ipAddress)) ipAddress = Dns.GetHostEntry (txtBoxIP.Text).AddressList[0]; serverEndPoint = new IPEndPoint(ipAddress, MainForm.port) Don't forget the error handling. share|improve this answer answered Jun 27 '11 at 21:02 agent-j 18.2k12256 2 Yeah, a lot better with TryParse :-) –Dan Abramov Jun 27 '11 at 21:10 add a comment| up vote 2 down vote DNS to IP List IPHostEntry nameToIpAddress; nameToIpAddress = Dns.GetHostEntry("HostName"); foreach (IPAddress address in nameToIpAddress.AddressList) Console.WriteLine(address.ToString()); Then you can use the IP's in the AddressList. Here is a great article share|improve this answer answered Jun 27 '11 at 20:58 FlyingStreudel 2,50911943 Yes, but how can i make
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