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

It looks like this is an old post but I know that you will run into this thread looking for help so here is what I did today to get the MAC addresses of all the network interfaces in my Laptop.

First of all you have to import the following

Imports System.Net.NetworkInformation

This is the function that returns all the MAC addresses in an string array

Private Function GetMAC() As String()
    Dim MACAddresses(0) As String
    Dim i As Integer = 0
    Dim NIC As NetworkInterface

    For Each NIC In NetworkInterface.GetAllNetworkInterfaces
        ReDim Preserve MACAddresses(i)
        MACAddresses(i) = String.Format("{0}", NIC.GetPhysicalAddress())
        i += 1
    Next
    Return MACAddresses
End Function