Accessing Network Card Information using .Net (C#)?

In today’s computer, multiple Network card is installed on single machine. Sometimes we might need to get information like how many network cards are installed and details of each network card. Dotnet provides NetworkInterface class to get information about all network cards installed on machine. This class is available in System.Net.NetworkInformation namespace.

NetworkInterface class provides low level information about Network card installed on computer. NetworkInterface class is an abstract class and provides GetAllNetworkInterfaces method to retrieve all the Network cards installed on machine. This class gives us lots of fun things. Let’s have a look on below example.

//retrieves all network interface cards

NetworkInterface[] netInterfaces = NetworkInterface.GetAllNetworkInterfaces();

if (netInterfaces.Length < 1 || netInterfaces == null)

{

    Console.WriteLine("No Network card installed on your machine...");

    return;

}

Console.WriteLine("Total Network card installed on your machine is: {0}", netInterfaces.Length);

//loop all the NICs

foreach (NetworkInterface nic in netInterfaces)

{

    Console.WriteLine("{0}", new String('-', 30));

    Console.WriteLine("NIC ID: {0}", nic.Id);

    Console.WriteLine("Name: {0}", nic.Name);

    Console.WriteLine("Description: {0}", nic.Description);

    Console.WriteLine("Physical Address: {0}", nic.GetPhysicalAddress().ToString());

    Console.WriteLine("Interface Type: {0}", nic.NetworkInterfaceType);

    Console.WriteLine("Operational Status: {0}", nic.OperationalStatus);

    Console.WriteLine("Supports Multicast: {0}", nic.SupportsMulticast);

    Console.WriteLine("IPv4: {0}", nic.Supports(NetworkInterfaceComponent.IPv4) ? "Yes" : "No");

    Console.WriteLine("IPv6: {0}", nic.Supports(NetworkInterfaceComponent.IPv6) ? "Yes" : "No");

   

    //retrieves ip related information from NIC

    IPInterfaceProperties ipProp = nic.GetIPProperties();

    Console.WriteLine("DNS Enabled: {0}", ipProp.IsDnsEnabled);

    Console.WriteLine("DNS Suffix: {0}", ipProp.DnsSuffix);

    Console.WriteLine("Dynamically enabled DNS: {0}", ipProp.IsDynamicDnsEnabled);

}

Output –

Total Network card installed on your machine is: 3

------------------------------

NIC ID: {137F90A1-8654-4F46-6523-072636A6E415}

Name: Wireless Network Connection

Description: Intel(R) WiFi Link 1000 BGN

Physical Address: 0026C7CB31FC

Interface Type: Wireless80211

Operational Status: Up

Supports Multicast: True

IPv4: Yes

IPv6: Yes

DNS Enabled: False

DNS Suffix: broadband.mtnl.com

Dynamically enabled DNS: True

------------------------------

NIC ID: {846EE342-8654-11DE-2451-806E6F6E6963}

Name: Loopback Pseudo-Interface 1

Description: Software Loopback Interface 1

Physical Address:

Interface Type: Loopback

Operational Status: Up

Supports Multicast: True

IPv4: Yes

IPv6: Yes

DNS Enabled: False

DNS Suffix:

Dynamically enabled DNS: True

------------------------------

NIC ID: {BE831E47-9874-4EF1-5412-C087C5FEED04}

Name: Local Area Connection* 17

Description: Teredo Tunneling Pseudo-Interface

Physical Address: 00000000000000E0

Interface Type: Tunnel

Operational Status: Up

Supports Multicast: False

IPv4: No

IPv6: Yes

DNS Enabled: False

DNS Suffix:

Dynamically enabled DNS: False

See Also –

How to ping machine using .Net (C#)?

How to get IP Address and host name of computer using C#?

How to read/write windows event logs?