Get Mac Address

Question

Get Mac Address

Dani_S 4,501

Hi, How do I get Mac address ? Thanks in adavance,

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Answer 1

Jiachen Li-MSFT 34,221 Microsoft External Staff

Hi @Dani_S ,

The code you provided retrieves the MAC (Media Access Control) address of the network interface that is currently operational. It utilizes the NetworkInterface.GetAllNetworkInterfaces() method to get all network interfaces available on the system, then filters them using a LINQ query to select only those interfaces with OperationalStatus equal to OperationalStatus.Up, indicating they are operational and can transmit data.

Once it finds the first matching interface, it retrieves its physical address using nic.GetPhysicalAddress(), converts it to a string, and returns it. If no matching interface is found or if the MAC address is empty or null, it returns null.

This function could be used in scenarios where you need to identify the MAC address of the primary network interface for network-related tasks or for device identification purposes.

Best Regards.

Jiachen Li

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Dani_S 4,501 Reputation points

2024-02-20T09:36:15.75+00:00

So my code is coorect ?
Jiachen Li-MSFT 34,221 Reputation points Microsoft External Staff

2024-02-21T07:10:41.0866667+00:00

Hi @דני שטרית ,

Yes, the part of the code you provided should work fine.
Dani_S 4,501 Reputation points

2024-02-21T07:16:34.6033333+00:00

Thanks

Answer 2

Marcin Policht 49,640 MVP Volunteer Moderator

Assuming you are using C#, the following should work:

using System;
using System.Net.NetworkInformation;
class Program
{
    static void Main()
    {
        NetworkInterface[] networkInterfaces = NetworkInterface.GetAllNetworkInterfaces();
        foreach (NetworkInterface networkInterface in networkInterfaces)
        {
            Console.WriteLine($"Interface: {networkInterface.Description}");
            Console.WriteLine($"  MAC Address: {networkInterface.GetPhysicalAddress()}");
            Console.WriteLine();
        }
    }
}

hth Marcin

Dani_S 4,501 Reputation points

2024-02-18T13:16:32.3566667+00:00

Does this the function using where nic.OperationalStatus == OperationalStatus.Up? /// <summary> /// Get MAC address /// </summary> /// <returns></returns> public static string GetMacAddress() { var macAddr = ( from nic in NetworkInterface.GetAllNetworkInterfaces() where nic.OperationalStatus == OperationalStatus.Up select nic.GetPhysicalAddress().ToString() ).FirstOrDefault(); if (!string.IsNullOrEmpty(macAddr)) { return macAddr; } return null; }

Answer 3

webserverforum 65

exactly how do you want to get Mac address ? are you checking for it on any machine/PC/server or you want to get it from code ? Best Regards, https://www.webserverforum.com/

Answer 4

webserverforum 65

if you want to get Mac address on a PC then you can run following command on command prompt : getmac it will show the Mac addresses Regards, https://www.webserverforum.com/

Dani_S 4,501 Reputation points

2024-02-18T18:38:12.3033333+00:00

I want mac address from code.The code can can be my PC,server 2019,server 2022.
Dani_S 4,501 Reputation points

2024-02-18T18:41:51.0433333+00:00

I want function that return mac address on server 2019 or more or pc
Dani_S 4,501 Reputation points

2024-02-18T19:00:09.1066667+00:00

does this code is ok ? /// Get MAC address /// </summary> /// <returns></returns> public static string GetMacAddress() { var macAddr = ( from nic in NetworkInterface.GetAllNetworkInterfaces() where nic.OperationalStatus == OperationalStatus.Up select nic.GetPhysicalAddress().ToString() ).FirstOrDefault(); if (!string.IsNullOrEmpty(macAddr)) { return macAddr; } return null; } }

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Get Mac Address

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