Read MAC Address from network adapter in .NET

Question

I\'d like to be able to read the mac address from the first active network adapter using VB.net or C# (using .NET 3.5 SP1) for a winform application

Answer 1

using Linq..

using System.Net.NetworkInformation;
..

NetworkInterface nic =
    NetworkInterface.GetAllNetworkInterfaces()
    .Where(n => n.OperationalStatus == OperationalStatus.Up).FirstOrDefault();

if (nic != null)
    return nic.GetPhysicalAddress().ToString();