方法一：nbtstat 命令
Public Function GetMac(ByVal IP As String) As String
Try
'定义输出变量。
Dim StrMac As String = String.Empty
Dim Str As String = String.Empty
'定义进程参数。
Dim Info As New processstartinfo
Info.FileName = "nbtstat"
Info.Arguments = "-a " + IP
Info.UseShellExecute = False
Info.RedirectStandardInput = False
Info.RedirectStandardOutput = True
Info.RedirectStandardError = True
Info.CreateNowindow = True
Info.WindowStyle = ProcessWindowStyle.Hidden
'定义新进程。
Dim mProcess As New Process
'开始执行操作。
mProcess = Process.Start(Info)
While True
'读取一行数据。
Str = mProcess.StandardOutput.ReadLine()
mProcess.WaitForExit()
StrMac = Str.Trim()
'判断是否有 Mac Address字眼。
If StrMac.ToLower.Contains("mac address") Then
Exit While
Else
If StrMac.ToLower.Contains("host not found") Then
Exit While
End If
End If
End While
'返回值。
Return StrMac
Catch ex As Exception
'返回错误值。
Return String.Format("Get Error. 原因:{0}",ex.Message)
End Try
Private Declare Ansi Function SendARP Lib "Iphlpapi.dll" (ByVal dest As Int32,ByVal host As Int32,ByRef mac As Int64,ByRef length As Int32) As Int32
Private Declare Ansi Function inet_addr Lib "Ws2_32.dll" (ByVal IP As String) As Int32
Public Function getRemoteMAC(ByVal RemoteIp As String) As String
Dim Dest As Int32 = inet_addr(RemoteIp)
Dim Str As String = String.Empty
Dim StrMac As String = String.Empty
Try
Dim MacInfo As New Int64
Dim Len As Int32 = 6
Dim Res As Integer = SendARP(Dest,MacInfo,Len)
Str = Convert.ToString(MacInfo,16).toupper
If Str.Length = 12 Then
'因为取出来的值是反的，所以要处理下。
Dim M(5) As String
M(0) = Str.Substring(10,2)
M(1) = Str.Substring(8,2)
M(2) = Str.Substring(6,2)
M(3) = Str.Substring(4,2)
M(4) = Str.Substring(2,2)
M(5) = Str.Substring(0,2)
StrMac = String.Format("{0}-{1}-{2}-{3}-{4}-{5}",M(0),M(1),M(2),M(3),M(4),M(5))
Else
StrMac = "Host not found."
End If
Catch ex As Exception
'返回错误值。
Return String.Format("Get Error. 原因:{0}",ex.Message)
End Try
Return StrMac
End Function
方法3：用WMI,先工程-引用 Microsoft WMI Scripting V1.1 Library
Private Sub wmiSoundDeviceInfo()
Dim wmiObjSet As WbemScripting.SWbemObjectSet
Dim obj As SWbemObject
wmiObjSet = Getobject("winmgmts:{impersonationLevel=impersonate}"). _
InstancesOf("Win32_NetworkAdapterConfiguration")
For Each obj In wmiObjSet
Debug.Print(obj.MACAddress)
Next
End Sub
方法4：
Imports System.Net.networkinformation
Function getMacAddress()
Dim nics() As NetworkInterface = _
NetworkInterface.GetAllNetworkInterfaces
Return nics(0).GetPhysicalAddress.ToString
End Function