get mac address

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Import namespaces

using System.Collections.Generic;
using System.Net.NetworkInformation;
using System.Text;

Code

public static string[] GetPhysicalAddresses()
{
    var result = new List<string>();
    NetworkInterface[] interfaces = NetworkInterface.GetAllNetworkInterfaces();
    foreach (NetworkInterface adapter in interfaces)
    {
        PhysicalAddress address = adapter.GetPhysicalAddress();
        byte[] bytes = address.GetAddressBytes();
        if (bytes.Length == 0) continue;

        var mac = new StringBuilder();
        for (int i = 0; i < bytes.Length; i++)
        {
            mac.Append(bytes[i].ToString("X2"));
            if (i != bytes.Length - 1) mac.Append("-");
        }

        result.Add(mac.ToString());
    }
    return result.ToArray();
}

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