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;

}