รบกวนขอ Code Function Get Mac Address Client VB.et หน่อยนะครับ

Imports System.Net.NetworkInformation
 
Public Class Form1
 
    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        Dim mac As String
        mac = getMacAddress()
        MessageBox.Show(mac)
    End Sub
 
    Function getMacAddress()
        Dim nics() As NetworkInterface = NetworkInterface.GetAllNetworkInterfaces()
        Return nics(1).GetPhysicalAddress.ToString
    End Function
 
End Class