Display IP Addresses in a Rich text box

Question

I have a problem with a C# Application I am making. I am trying to get all IPs to display in a textbox within a windows form by simply clicking a button. I currently have a base to work with:

    private void btnIP_Click(object sender, EventArgs e)
    {
         NetworkInterface[] ipadapters = NetworkInterface.GetAllNetworkInterfaces();
        string iptemplate = @"
        Network adapter: {0}
        IP:              {1}";

        string IPText = "";

        foreach (NetworkInterface AdapterIP in ipadapters)
        {

            IPText = IPText + String.Format(iptemplate,
            AdapterIP.Name,
            AdapterIP = ipadd());

        }
            txtOutput.Text = IPText;
        }

However, I am just not understanding whether I can do this using the

using System.Net.NetworkInformation;

If someone can just explain to me how I can take IPs from there and display it, it would help a lot. I have seen people query DNS to retrieve a hostname etc, but I just want to show all IPv4 and IPv6 addresses for all adapters.

I am just not understanding it. I know that I need to keep the foreach() method but not sure how to build out this code to make it work. Note: I have it working for a descriptions and everything for all adapters but I've created a separate button solely dedicated to IPs.

What bit don't you understand? This SO question goes into some detail: http://stackoverflow.com/questions/1069103/how-to-get-my-own-ip-address-in-c ...until you explain exactly what you don't understand. — Arran, Dec 13 '12 at 19:09
I have done this before, but I did it for a CompactFramework application and used a lot of P/Invokes, I'm not sure if there exists a more managed way to do this. But, you are correct that you should **not** have to query DNS !! — Alan, Dec 13 '12 at 19:10
Seems duplicate question http://stackoverflow.com/questions/5271724/get-all-ip-addresses-on-machine?rq=1 — Amitd, Dec 13 '12 at 19:10

d.moncada · Answer 1 · 2012-12-13T19:22:42.297

1

var ipEntry = Dns.GetHostEntry(Dns.GetHostName());
foreach (var ip in ipEntry.AddressList)
{
   if (ip.AddressFamily == System.Net.Sockets.AddressFamily.InterNetworkV6)
   {
    //IPv6
   }
   else if (ip.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
   {
    //IPv4
   }
}

edited Dec 13 '12 at 19:22

answered Dec 13 '12 at 19:16

d.moncada

16,900
5
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This way it would only display 1 adapter (random). I want to build the whole adapter list and then display only the IP address including the name of the adapter and at the top hostname of the computer. – Maddox Dec 13 '12 at 19:29
@Maddox Are you using WPF or Winforms? And to confirm, you're looking to only display the local IP address/adapter name of the computer? – d.moncada Dec 13 '12 at 19:34
WinForms and I'm trying to list all the adapters on the local machine. Including: Name, Description and IP Address (v4, v6) of those adapters. – Maddox Dec 13 '12 at 19:42

score 1 · Answer 2 · edited Sep 02 '20 at 12:01

1

string hostName = Dns.GetHostName();

string myIP = Dns.GetHostByName(hostName).AddressList[0].ToString();

edited Sep 02 '20 at 12:01

Arghya Sadhu

41,002
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answered Sep 02 '20 at 11:26

madhura

41
3

score 0 · Answer 3 · edited May 23 '17 at 12:29

0

Below is a great post about how to do this. It provides all the info you should need.

How to get the IP address of the server on which my C# application is running on?

Basically it's this:

var host = Dns.GetHostEntry(Dns.GetHostName());
foreach (IPAddress ip in host.AddressList)
{
    var localIP = ip.ToString();
    //do more here...
}

edited May 23 '17 at 12:29

Community

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1

answered Dec 13 '12 at 19:11

jmrnet

548
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Display IP Addresses in a Rich text box

3 Answers3