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using System.Management; 

 /// <summary>
        /// //获取CPU序列号代码
        /// </summary>
        /// <returns></returns>
        string GetCpuID()
        {
            try
            {
                string cpuInfo = "";//cpu序列号                                  
                ManagementClass mc = new ManagementClass("Win32_Processor");
                ManagementObjectCollection moc = mc.GetInstances();
                foreach (ManagementObject mo in moc)
                {
                    cpuInfo = mo.Properties["ProcessorId"].Value.ToString();
                }
                moc = null;
                mc = null;
                return "cpu序列号：" + cpuInfo;
            }
            catch { return "unknow"; }
            finally { }
        }

        /// <summary>
        /// 获取网卡硬件地址
        /// </summary>
        /// <returns></returns>
        string GetMacAddress()
        {
            try
            {
                //获取网卡硬件地址        
                string mac = "";
                ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
                ManagementObjectCollection moc = mc.GetInstances();
                foreach (ManagementObject mo in moc)
                {
   &n