winform获取本地（客户端）MAC地址

public string GetMacString()
        {
            string resMac = "";
            ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
            ManagementObjectCollection moc2 = mc.GetInstances();
            foreach (ManagementObject mo in moc2)
            {
                if ((bool)mo["IPEnabled"] == true)
                {
                    resMac = mo["MacAddress"].ToString();
                    mo.Dispose();
                    return resMac;
                }
            }
            return resMac;
        }

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