C# 获取物理网卡Mac地址

// <summary>
/// 获取网卡物理地址
/// </summary>
/// <returns></returns>
public static string getMacAddr_Local()
{
    string madAddr = null;
    ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
    ManagementObjectCollection moc2 = mc.GetInstances();
    foreach (ManagementObject mo in moc2)
    {
        if (Convert.ToBoolean(mo["IPEnabled"]) == true)
        {
            madAddr = mo["MacAddress"].ToString();
            madAddr = madAddr.Replace(':', '-');
        }
        mo.Dispose();
    }
    return madAddr;
}