C# Winapp ขอโค้ดเช็ค MAC Address ของเครื่อง หน่อยครับ

For Each nic As System.Net.NetworkInformation.NetworkInterface In System.Net.NetworkInformation.NetworkInterface.GetAllNetworkInterfaces()
    If nic.OperationalStatus = Net.NetworkInformation.OperationalStatus.Up Then
       MessageBox.Show(String.Format("The MAC address of {0} is{1}{2}", nic.Description, Environment.NewLine,   nic.GetPhysicalAddress()))
End If
End For

            ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
            foreach (ManagementObject mo in mc.GetInstances())
            {
                string macAddr = mo["MacAddress"] as string;
                if (macAddr != null && macAddr.Trim() != "")
                {
                    textBox1.Text = macAddr.ToString();
                }

            }

Imports System
Imports System.Management
Public Class Form1
    Inherits System.Windows.Forms.Form

    Dim MyManagementClass As New ManagementClass("Win32_NetworkAdapterConfiguration")
    Dim MyManagementObjectCollection As ManagementObjectCollection = MyManagementClass.GetInstances()
    Dim MyManagementObject As ManagementObject
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        For Each MyManagementObject In MyManagementObjectCollection
            If MyManagementObject.Item("IPEnabled") = True Then
                'รับค่า IP 
                Dim IP() As String = MyManagementObject.Item("IPAddress")
                MessageBox.Show("IP address " & IP(0) _
                & vbCrLf & "MAC address " & MyManagementObject.Item("MacAddress").ToString())
            End If
        Next
    End Sub
End Class