C# 得到硬盘与CPU的ID及网卡MAC

/// <summary>    /// 得到硬盘与CPU的ID及网卡MAC    /// </summary>    public class HardwareInfo    {        /// <summary>        /// 取机器名         /// </summary>        /// <returns></returns>        public string GetHostName()        {            return System.Net.Dns.GetHostName();        }        /// <summary>        /// 取CPU编号        /// </summary>        /// <returns></returns>        public String GetCpuID()        {            try            {                ManagementClass mc = new ManagementClass("Win32_Processor");                ManagementObjectCollection moc = mc.GetInstances();                String strCpuID = null;                foreach (ManagementObject mo in moc)                {                    strCpuID = mo.Properties["ProcessorId"].Value.ToString();                    break;                }                return strCpuID;            }            catch            {                return "";            }        }//end method        /// <summary>        /// 取第一块硬盘编号        /// </summary>        /// <returns></returns>        public String GetHardDiskID()        {            try            {                               //ManagementObjectSearcher searcher = new ManagementObjectSearcher("SELECT * FROM Win32_PhysicalMedia");                String strHardDiskID = null;                ManagementClass cimobject = new ManagementClass("Win32_DiskDrive");                ManagementObjectCollection moc = cimobject.GetInstances();                foreach (ManagementObject mo in moc)                {                    strHardDiskID = (string)mo.Properties["Model"].Value;                    break;                }                //foreach (ManagementObject mo in searcher.Get())                //{                //    strHardDiskID = mo["SerialNumber"].ToString().Trim();                //    break;                //}                return strHardDiskID;            }            catch            {                return "";            }        }        /// <summary>        /// 得到网卡MAC        /// </summary>        /// <returns></returns>        public string GetMacAddress()        {            string addr = "";            try            {                int cb;                ASTAT adapter;                NCB Ncb = new NCB();                char uRetCode;                LANA_ENUM lenum;                Ncb.ncb_command = (byte)NCBCONST.NCBENUM;                cb = Marshal.SizeOf(typeof(LANA_ENUM));                Ncb.ncb_buffer = Marshal.AllocHGlobal(cb);                Ncb.ncb_length = (ushort)cb;                uRetCode = Win32API.Netbios(ref Ncb);                lenum = (LANA_ENUM)Marshal.PtrToStructure(Ncb.ncb_buffer, typeof(LANA_ENUM));                Marshal.FreeHGlobal(Ncb.ncb_buffer);                if (uRetCode != (short)NCBCONST.NRC_GOODRET)                    return "";                for (int i = 0; i < lenum.length; i++)                {                    Ncb.ncb_command = (byte)NCBCONST.NCBRESET;                    Ncb.ncb_lana_num = lenum.lana[i];                    uRetCode = Win32API.Netbios(ref Ncb);                    if (uRetCode != (short)NCBCONST.NRC_GOODRET)                        return "";                    Ncb.ncb_command = (byte)NCBCONST.NCBASTAT;                    Ncb.ncb_lana_num = lenum.lana[i];                    Ncb.ncb_callname[0] = (byte)'*';                    cb = Marshal.SizeOf(typeof(ADAPTER_STATUS)) + Marshal.SizeOf(typeof(NAME_BUFFER)) * (int)NCBCONST.NUM_NAMEBUF;                    Ncb.ncb_buffer = Marshal.AllocHGlobal(cb);                    Ncb.ncb_length = (ushort)cb;                    uRetCode = Win32API.Netbios(ref Ncb);                    adapter.adapt = (ADAPTER_STATUS)Marshal.PtrToStructure(Ncb.ncb_buffer, typeof(ADAPTER_STATUS));                    Marshal.FreeHGlobal(Ncb.ncb_buffer);                    if (uRetCode == (short)NCBCONST.NRC_GOODRET)                    {                        if (i > 0)                            addr += ":";                        addr = string.Format("{0,2:X}{1,2:X}{2,2:X}{3,2:X}{4,2:X}{5,2:X}",                         adapter.adapt.adapter_address[0],                         adapter.adapt.adapter_address[1],                         adapter.adapt.adapter_address[2],                         adapter.adapt.adapter_address[3],                         adapter.adapt.adapter_address[4],                         adapter.adapt.adapter_address[5]);                    }                }            }            catch            { }            return addr.Replace(' ', '0');        }        public enum NCBCONST        {            NCBNAMSZ = 16,      /* absolute length of a net name         */            MAX_LANA = 254,      /* lana's in range 0 to MAX_LANA inclusive   */            NCBENUM = 0x37,      /* NCB ENUMERATE LANA NUMBERS            */            NRC_GOODRET = 0x00,      /* good return                              */            NCBRESET = 0x32,      /* NCB RESET                        */            NCBASTAT = 0x33,      /* NCB ADAPTER STATUS                  */            NUM_NAMEBUF = 30,      /* Number of NAME's BUFFER               */        }        [StructLayout(LayoutKind.Sequential)]        public struct ADAPTER_STATUS        {            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 6)]            public byte[] adapter_address;            public byte rev_major;            public byte reserved0;            public byte adapter_type;            public byte rev_minor;            public ushort duration;            public ushort frmr_recv;            public ushort frmr_xmit;            public ushort iframe_recv_err;            public ushort xmit_aborts;            public uint xmit_success;            public uint recv_success;            public ushort iframe_xmit_err;            public ushort recv_buff_unavail;            public ushort t1_timeouts;            public ushort ti_timeouts;            public uint reserved1;            public ushort free_ncbs;            public ushort max_cfg_ncbs;            public ushort max_ncbs;            public ushort xmit_buf_unavail;            public ushort max_dgram_size;            public ushort pending_sess;            public ushort max_cfg_sess;            public ushort max_sess;            public ushort max_sess_pkt_size;            public ushort name_count;        }        [StructLayout(LayoutKind.Sequential)]        public struct NAME_BUFFER        {            [MarshalAs(UnmanagedType.ByValArray, SizeConst = (int)NCBCONST.NCBNAMSZ)]            public byte[] name;            public byte name_num;            public byte name_flags;        }        [StructLayout(LayoutKind.Sequential)]        public struct NCB        {            public byte ncb_command;            public byte ncb_retcode;            public byte ncb_lsn;            public byte ncb_num;            public IntPtr ncb_buffer;            public ushort ncb_length;            [MarshalAs(UnmanagedType.ByValArray, SizeConst = (int)NCBCONST.NCBNAMSZ)]            public byte[] ncb_callname;            [MarshalAs(UnmanagedType.ByValArray, SizeConst = (int)NCBCONST.NCBNAMSZ)]            public byte[] ncb_name;            public byte ncb_rto;            public byte ncb_sto;            public IntPtr ncb_post;            public byte ncb_lana_num;            public byte ncb_cmd_cplt;            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 10)]            public byte[] ncb_reserve;            public IntPtr ncb_event;        }        [StructLayout(LayoutKind.Sequential)]        public struct LANA_ENUM        {            public byte length;            [MarshalAs(UnmanagedType.ByValArray, SizeConst = (int)NCBCONST.MAX_LANA)]            public byte[] lana;        }        [StructLayout(LayoutKind.Auto)]        public struct ASTAT        {            public ADAPTER_STATUS adapt;            [MarshalAs(UnmanagedType.ByValArray, SizeConst = (int)NCBCONST.NUM_NAMEBUF)]            public NAME_BUFFER[] NameBuff;        }        public class Win32API        {            [DllImport("NETAPI32.DLL")]            public static extern char Netbios(ref NCB ncb);        }    }