Obtain IP address of wifi connected system

Question

I am able to achieve Wi-fi communication between android and PC, by hard coding the IP address of the network connected. But i need to get the IP address of the system connected to a wi-fi network. Iam working on windows platform using C#. So please help me in this regard.

Take a look at this link: http://stackoverflow.com/questions/1069103/how-to-get-my-own-ip-address-in-c — Mark Kram, Feb 28 '12 at 18:26
See this: http://stackoverflow.com/questions/2518155/other-than-udp-broadcast-or-multicast-what-other-methods-can-i-use-on-a-wifi-ne — arx, Feb 28 '12 at 18:29

score 4 · Answer 1 · edited Sep 25 '15 at 09:05

4

This may work for you:

string[] strIP = null;
int count = 0;

IPHostEntry HostEntry = Dns.GetHostEntry((Dns.GetHostName()));
if (HostEntry.AddressList.Length > 0)
{
    strIP = new string[HostEntry.AddressList.Length];
    foreach (IPAddress ip in HostEntry.AddressList)
    {
        if (ip.AddressFamily == AddressFamily.InterNetwork)
        {
            strIP[count] = ip.ToString();
            count++;
        }
    }
}

The problem is, the host could have many IP addresses. This is why the string array is used, it collects them all.

--EDITED by L.B--

Here is the the working version of the code above

var addresses = Dns.GetHostEntry((Dns.GetHostName()))
                    .AddressList
                    .Where(x => x.AddressFamily == AddressFamily.InterNetwork)
                    .Select(x => x.ToString())
                    .ToArray();

edited Sep 25 '15 at 09:05

Ashkan Mobayen Khiabani

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answered Feb 28 '12 at 18:50

DIXONJWDD

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`HosyEntry`, use of `strIP` without initializing. etc. Did you try to compile&run your code? – L.B Feb 28 '12 at 19:09
yep - sorry. I was away from VS when I wrote this (on my phone). +1 for good edit – DIXONJWDD Feb 28 '12 at 19:22
1

This doesn't get the connected wifi IP address but rather your local machines ip – James Heffer Jan 07 '19 at 08:14

Syaiful Nizam Yahya · Answer 2 · 2017-01-23T05:54:39.710

1

For UWP, use this to get your local Ip Address. Updated based on answers by @L.B.

var addresses = Dns.GetHostEntryAsync((Dns.GetHostName()))
                .Result
                .AddressList
                .Where(x => x.AddressFamily == AddressFamily.InterNetwork)
                .Select(x => x.ToString())
                .ToArray();

edited Jan 23 '17 at 05:54

answered Jan 22 '17 at 19:14

Syaiful Nizam Yahya

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Obtain IP address of wifi connected system

2 Answers2