【转】C#取硬盘、CPU、主板、网卡的序号 ManagementObjectSearcher

        private void button1_Click(object sender, EventArgs e)
        {
            textBox1.Text = "";
            foreach (string s in listBox1.SelectedItems)
            {
                ManagementObjectSearcher searcher = new ManagementObjectSearcher("Select * From "+s);
                foreach (ManagementObject mo in searcher.Get())
                {
                    textBox1.AppendText("============" + s+ "开始＝＝＝＝＝＝
");
                    foreach (PropertyData pd in mo.Properties)
                    {
                        textBox1.Text += pd.Name + " :: ";
                        if (pd.Value != null)
                        {
                            textBox1.Text += pd.Value.ToString();
                        }
                        textBox1.Text += "
";
                    }
                    textBox1.AppendText("============" + s + "结束＝＝＝＝＝＝


");
                    //break;
                }
            }
         
            
        }

//获取主板序列号
        public string GetBIOSSerialNumber()
        {
            try
            {
                ManagementObjectSearcher searcher = new ManagementObjectSearcher("Select * From Win32_BIOS");
                string sBIOSSerialNumber = "";
                foreach (ManagementObject mo in searcher.Get())
                {
                    sBIOSSerialNumber = mo["SerialNumber"].ToString().Trim();
                }
                return sBIOSSerialNumber;
            }
            catch
            {
                return "";
            }
        }
        //获取CPU序列号
        public string GetCPUSerialNumber()
        {
            try
            {
                ManagementObjectSearcher searcher = new ManagementObjectSearcher("Select * From Win32_Processor");
                string sCPUSerialNumber = "";
                foreach (ManagementObject mo in searcher.Get())
                {
                    sCPUSerialNumber = mo["ProcessorId"].ToString().Trim();
                }
                return sCPUSerialNumber;
            }
            catch
            {
                return "";
            }
        }
        //获取硬盘序列号
        public string GetHardDiskSerialNumber()
        {
            try
            {
                ManagementObjectSearcher searcher = new ManagementObjectSearcher("SELECT * FROM Win32_PhysicalMedia");
                string sHardDiskSerialNumber = "";
                foreach (ManagementObject mo in searcher.Get())
                {
                    sHardDiskSerialNumber = mo["SerialNumber"].ToString().Trim();
                    break;
                }
                return sHardDiskSerialNumber;
            }
            catch
            {
                return "";
            }
        }
        //获取网卡地址
        public string GetNetCardMACAddress()
        {
            try
            {
                ManagementObjectSearcher searcher = new ManagementObjectSearcher("SELECT * FROM Win32_NetworkAdapter WHERE ((MACAddress Is Not NULL) AND (Manufacturer <> 'Microsoft'))");
                string NetCardMACAddress = "";
                foreach (ManagementObject mo in searcher.Get())
                {
                    NetCardMACAddress = mo["MACAddress"].ToString().Trim();
                }
                return NetCardMACAddress;
            }
            catch
            {
                return "";
            }
        }

在很多情况下，你可能都需要得到微机的硬件信息。比如：你想给你的软件加锁，不让别人随便访问。

最有效的办法是获取CPU的序列号，然后让你的软件只能运行在有这样的CPU序列号的机器上。众所周知，CPU序列号是唯一的！因此，这样就可以为你的软件加锁了。powered by 25175.net

另外一个需要硬盘信息的例子是：硬盘有几个分区，每个分区各有多少剩余空间。当你正在做一个多媒体应用程序的时候，你可能也需要获得有关声卡、显卡的硬件信息。

本应用程序另一个精彩的应用是：获取有关系统内存的信息，如内存地址，内存设备等等。 

首先，你必须知道这个应用程序的功能是使用System.Management这个类得到的。因此，你需要加上下面的这句话：

using System.Management;

为了获取硬件信息，你还需要创建一个ManagementObjectSearcher 对象。

ManagementObjectSearcher searcher = new ManagementObjectSearcher("select * from " + Key);

// 硬件 
Win32_Processor, // CPU 处理器 
Win32_PhysicalMemory, // 物理内存条 
Win32_Keyboard, // 键盘 
Win32_PointingDevice, // 点输入设备，包括鼠标。 
Win32_FloppyDrive, // 软盘驱动器 
Win32_DiskDrive, // 硬盘驱动器 
Win32_CDROMDrive, // 光盘驱动器 
Win32_BaseBoard, // 主板 
Win32_BIOS, // BIOS 芯片 
Win32_ParallelPort, // 并口 
Win32_SerialPort, // 串口 
Win32_SerialPortConfiguration, // 串口配置 
Win32_SoundDevice, // 多媒体设置，一般指声卡。 
Win32_SystemSlot, // 主板插槽 (ISA & PCI & AGP) 
Win32_USBController, // USB 控制器 
Win32_NetworkAdapter, // 网络适配器 
Win32_NetworkAdapterConfiguration, // 网络适配器设置 
Win32_Printer, // 打印机 
Win32_PrinterConfiguration, // 打印机设置 
Win32_PrintJob, // 打印机任务 
Win32_TCPIPPrinterPort, // 打印机端口 
Win32_POTSModem, // MODEM 
Win32_POTSModemToSerialPort, // MODEM 端口 
Win32_DesktopMonitor, // 显示器 
Win32_DisplayConfiguration, // 显卡 
Win32_DisplayControllerConfiguration, // 显卡设置 
Win32_VideoController, // 显卡细节。 
Win32_VideoSettings, // 显卡支持的显示模式。 

// 操作系统 
Win32_TimeZone, // 时区 
Win32_SystemDriver, // 驱动程序 
Win32_DiskPartition, // 磁盘分区 
Win32_LogicalDisk, // 逻辑磁盘 
Win32_LogicalDiskToPartition, // 逻辑磁盘所在分区及始末位置。 
Win32_LogicalMemoryConfiguration, // 逻辑内存配置 
Win32_PageFile, // 系统页文件信息 
Win32_PageFileSetting, // 页文件设置 
Win32_BootConfiguration, // 系统启动配置 
Win32_ComputerSystem, // 计算机信息简要 
Win32_OperatingSystem, // 操作系统信息 
Win32_StartupCommand, // 系统自动启动程序 
Win32_Service, // 系统安装的服务 
Win32_Group, // 系统管理组 
Win32_GroupUser, // 系统组帐号 
Win32_UserAccount, // 用户帐号 
Win32_Process, // 系统进程 
Win32_Thread, // 系统线程 
Win32_Share, // 共享 
Win32_NetworkClient, // 已安装的网络客户端 
Win32_NetworkProtocol, // 已安装的网络协议 

上面代码的Key是一个将被对应正确的数据填入的值。例如，获取CPU的信息，就需要把Key值设成Win32_Processor。所有Key可能的值，列举如下：

Win32_1394Controller
Win32_1394ControllerDevice
Win32_Account
Win32_AccountSID
Win32_ACE
Win32_ActionCheck
Win32_AllocatedResource
Win32_ApplicationCommandLine
Win32_ApplicationService
Win32_AssociatedBattery
Win32_AssociatedProcessorMemory
Win32_BaseBoard
Win32_BaseService
Win32_Battery
Win32_Binary
Win32_BindImageAction
Win32_BIOS
Win32_BootConfiguration
Win32_Bus
Win32_CacheMemory
Win32_CDROMDrive
Win32_CheckCheck
Win32_CIMLogicalDeviceCIMDataFile
Win32_ClassicCOMApplicationClasses
Win32_ClassicCOMClass
Win32_ClassicCOMClassSetting
Win32_ClassicCOMClassSettings
Win32_ClassInfoAction
Win32_ClientApplicationSetting
Win32_CodecFile
Win32_COMApplication
Win32_COMApplicationClasses
Win32_COMApplicationSettings
Win32_COMClass
Win32_ComClassAutoEmulator
Win32_ComClassEmulator
Win32_CommandLineAccess
Win32_ComponentCategory
Win32_ComputerSystem
Win32_ComputerSystemProcessor
Win32_ComputerSystemProduct
Win32_COMSetting
Win32_Condition
Win32_CreateFolderAction
Win32_CurrentProbe
Win32_DCOMApplication
Win32_DCOMApplicationAccessAllowedSetting
Win32_DCOMApplicationLaunchAllowedSetting
Win32_DCOMApplicationSetting
Win32_DependentService
Win32_Desktop
Win32_DesktopMonitor
Win32_DeviceBus
Win32_DeviceMemoryAddress
Win32_DeviceSettings
Win32_Directory
Win32_DirectorySpecification
Win32_DiskDrive
Win32_DiskDriveToDiskPartition
Win32_DiskPartition
Win32_DisplayConfiguration
Win32_DisplayControllerConfiguration
Win32_DMAChannel
Win32_DriverVXD
Win32_DuplicateFileAction
Win32_Environment
Win32_EnvironmentSpecification
Win32_ExtensionInfoAction
Win32_Fan
Win32_FileSpecification
Win32_FloppyController
Win32_FloppyDrive
Win32_FontInfoAction
Win32_Group
Win32_GroupUser
Win32_HeatPipe
Win32_IDEController
Win32_IDEControllerDevice
Win32_ImplementedCategory
Win32_InfraredDevice
Win32_IniFileSpecification
Win32_InstalledSoftwareElement
Win32_IRQResource
Win32_Keyboard
Win32_LaunchCondition
Win32_LoadOrderGroup
Win32_LoadOrderGroupServiceDependencies
Win32_LoadOrderGroupServiceMembers
Win32_LogicalDisk
Win32_LogicalDiskRootDirectory
Win32_LogicalDiskToPartition
Win32_LogicalFileAccess
Win32_LogicalFileAuditing
Win32_LogicalFileGroup
Win32_LogicalFileOwner
Win32_LogicalFileSecuritySetting
Win32_LogicalMemoryConfiguration
Win32_LogicalProgramGroup
Win32_LogicalProgramGroupDirectory
Win32_LogicalProgramGroupItem
Win32_LogicalProgramGroupItemDataFile
Win32_LogicalShareAccess
Win32_LogicalShareAuditing
Win32_LogicalShareSecuritySetting
Win32_ManagedSystemElementResource
Win32_MemoryArray
Win32_MemoryArrayLocation
Win32_MemoryDevice
Win32_MemoryDeviceArray
Win32_MemoryDeviceLocation
Win32_MethodParameterClass
Win32_MIMEInfoAction
Win32_MotherboardDevice
Win32_MoveFileAction
Win32_MSIResource
Win32_networkAdapter
Win32_networkAdapterConfiguration
Win32_networkAdapterSetting
Win32_networkClient
Win32_networkConnection
Win32_networkLoginProfile
Win32_networkProtocol
Win32_NTEventlogFile
Win32_NTLogEvent
Win32_NTLogEventComputer
Win32_NTLogEventLog
Win32_NTLogEventUser
Win32_ODBCAttribute
Win32_ODBCDataSourceAttribute
Win32_ODBCDataSourceSpecification
Win32_ODBCDriverAttribute
Win32_ODBCDriverSoftwareElement
Win32_ODBCDriverSpecification
Win32_ODBCSourceAttribute
Win32_ODBCTranslatorSpecification
Win32_OnBoardDevice
Win32_OperatingSystem
Win32_OperatingSystemQFE
Win32_OSRecoveryConfiguration
Win32_PageFile
Win32_PageFileElementSetting
Win32_PageFileSetting
Win32_PageFileUsage
Win32_ParallelPort
Win32_Patch
Win32_PatchFile
Win32_PatchPackage
Win32_PCMCIAController
Win32_Perf
Win32_PerfRawData
Win32_PerfRawData_ASP_ActiveServerPages
Win32_PerfRawData_ASPnet_114322_ASPnetAppsv114322
Win32_PerfRawData_ASPnet_114322_ASPnetv114322
Win32_PerfRawData_ASPnet_ASPnet
Win32_PerfRawData_ASPnet_ASPnetApplications
Win32_PerfRawData_IAS_IASAccountingClients
Win32_PerfRawData_IAS_IASAccountingServer
Win32_PerfRawData_IAS_IASAuthenticationClients
Win32_PerfRawData_IAS_IASAuthenticationServer
Win32_PerfRawData_InetInfo_InternetInformationServicesGlobal
Win32_PerfRawData_MSDTC_DistributedTransactionCoordinator
Win32_PerfRawData_MSFTPSVC_FTPService
Win32_PerfRawData_MSSQLSERVER_SQLServerAccessMethods
Win32_PerfRawData_MSSQLSERVER_SQLServerBackupDevice
Win32_PerfRawData_MSSQLSERVER_SQLServerBufferManager
Win32_PerfRawData_MSSQLSERVER_SQLServerBufferPartition
Win32_PerfRawData_MSSQLSERVER_SQLServerCacheManager
Win32_PerfRawData_MSSQLSERVER_SQLServerDatabases
Win32_PerfRawData_MSSQLSERVER_SQLServerGeneralStatistics
Win32_PerfRawData_MSSQLSERVER_SQLServerLatches
Win32_PerfRawData_MSSQLSERVER_SQLServerLocks
Win32_PerfRawData_MSSQLSERVER_SQLServerMemoryManager
Win32_PerfRawData_MSSQLSERVER_SQLServerReplicationAgents
Win32_PerfRawData_MSSQLSERVER_SQLServerReplicationDist
Win32_PerfRawData_MSSQLSERVER_SQLServerReplicationLogreader
Win32_PerfRawData_MSSQLSERVER_SQLServerReplicationMerge
Win32_PerfRawData_MSSQLSERVER_SQLServerReplicationSnapshot
Win32_PerfRawData_MSSQLSERVER_SQLServerSQLStatistics
Win32_PerfRawData_MSSQLSERVER_SQLServerUserSettable
Win32_PerfRawData_netFramework_netCLRExceptions
Win32_PerfRawData_netFramework_netCLRInterop
Win32_PerfRawData_netFramework_netCLRJit
Win32_PerfRawData_netFramework_netCLRLoading
Win32_PerfRawData_netFramework_netCLRLocksAndThreads
Win32_PerfRawData_netFramework_netCLRMemory
Win32_PerfRawData_netFramework_netCLRRemoting
Win32_PerfRawData_netFramework_netCLRSecurity
Win32_PerfRawData_Outlook_Outlook
Win32_PerfRawData_PerfDisk_PhysicalDisk
Win32_PerfRawData_Perfnet_Browser
Win32_PerfRawData_Perfnet_Redirector
Win32_PerfRawData_Perfnet_Server
Win32_PerfRawData_Perfnet_ServerWorkQueues
Win32_PerfRawData_PerfOS_Cache
Win32_PerfRawData_PerfOS_Memory
Win32_PerfRawData_PerfOS_Objects
Win32_PerfRawData_PerfOS_PagingFile
Win32_PerfRawData_PerfOS_Processor
Win32_PerfRawData_PerfOS_System
Win32_PerfRawData_PerfProc_FullImage_Costly
Win32_PerfRawData_PerfProc_Image_Costly
Win32_PerfRawData_PerfProc_JobObject
Win32_PerfRawData_PerfProc_JobObjectDetails
Win32_PerfRawData_PerfProc_Process
Win32_PerfRawData_PerfProc_ProcessAddressSpace_Costly
Win32_PerfRawData_PerfProc_Thread
Win32_PerfRawData_PerfProc_ThreadDetails_Costly
Win32_PerfRawData_RemoteAccess_RASPort
Win32_PerfRawData_RemoteAccess_RASTotal
Win32_PerfRawData_RSVP_ACSPerRSVPService
Win32_PerfRawData_Spooler_PrintQueue
Win32_PerfRawData_TapiSrv_Telephony
Win32_PerfRawData_Tcpip_ICMP
Win32_PerfRawData_Tcpip_IP
Win32_PerfRawData_Tcpip_NBTConnection
Win32_PerfRawData_Tcpip_networkInterface
Win32_PerfRawData_Tcpip_TCP
Win32_PerfRawData_Tcpip_UDP
Win32_PerfRawData_W3SVC_WebService

Win32_PhysicalMedia
Win32_PhysicalMemory
Win32_PhysicalMemoryArray
Win32_PhysicalMemoryLocation
Win32_PNPAllocatedResource
Win32_PnPDevice
Win32_PnPEntity
Win32_PointingDevice
Win32_PortableBattery
Win32_PortConnector
Win32_PortResource
Win32_POTSModem
Win32_POTSModemToSerialPort
Win32_PowerManagementEvent
Win32_Printer
Win32_PrinterConfiguration
Win32_PrinterController
Win32_PrinterDriverDll
Win32_PrinterSetting
Win32_PrinterShare
Win32_PrintJob
Win32_PrivilegesStatus
Win32_Process
Win32_Processor
Win32_ProcessStartup
Win32_Product
Win32_ProductCheck
Win32_ProductResource
Win32_ProductSoftwareFeatures
Win32_ProgIDSpecification
Win32_ProgramGroup
Win32_ProgramGroupContents
Win32_ProgramGroupOrItem
Win32_Property
Win32_ProtocolBinding
Win32_PublishComponentAction
Win32_QuickFixEngineering
Win32_Refrigeration
Win32_Registry
Win32_RegistryAction
Win32_RemoveFileAction
Win32_RemoveIniAction
Win32_ReserveCost
Win32_ScheduledJob
Win32_SCSIController
Win32_SCSIControllerDevice
Win32_SecurityDescriptor
Win32_SecuritySetting
Win32_SecuritySettingAccess
Win32_SecuritySettingAuditing
Win32_SecuritySettingGroup
Win32_SecuritySettingOfLogicalFile
Win32_SecuritySettingOfLogicalShare
Win32_SecuritySettingOfObject
Win32_SecuritySettingOwner
Win32_SelfRegModuleAction
Win32_SerialPort
Win32_SerialPortConfiguration
Win32_SerialPortSetting
Win32_Service
Win32_ServiceControl
Win32_ServiceSpecification
Win32_ServiceSpecificationService
Win32_SettingCheck
Win32_Share
Win32_ShareToDirectory
Win32_ShortcutAction
Win32_ShortcutFile
Win32_ShortcutSAP
Win32_SID
Win32_SMBIOSMemory
Win32_SoftwareElement
Win32_SoftwareElementAction
Win32_SoftwareElementCheck
Win32_SoftwareElementCondition
Win32_SoftwareElementResource
Win32_SoftwareFeature
Win32_SoftwareFeatureAction
Win32_SoftwareFeatureCheck
Win32_SoftwareFeatureParent
Win32_SoftwareFeatureSoftwareElements
Win32_SoundDevice
Win32_StartupCommand
Win32_SubDirectory
Win32_SystemAccount
Win32_SystemBIOS
Win32_SystemBootConfiguration
Win32_SystemDesktop
Win32_SystemDevices
Win32_SystemDriver
Win32_SystemDriverPNPEntity
Win32_SystemEnclosure
Win32_SystemLoadOrderGroups
Win32_SystemLogicalMemoryConfiguration
Win32_SystemMemoryResource
Win32_SystemnetworkConnections
Win32_SystemOperatingSystem
Win32_SystemPartitions
Win32_SystemProcesses
Win32_SystemProgramGroups
Win32_SystemResources
Win32_SystemServices
Win32_SystemSetting
Win32_SystemSlot
Win32_SystemSystemDriver
Win32_SystemTimeZone
Win32_SystemUsers
Win32_TapeDrive
Win32_TemperatureProbe
Win32_Thread
Win32_TimeZone
Win32_Trustee
Win32_TypeLibraryAction
Win32_UninterruptiblePowerSupply
Win32_USBController
Win32_USBControllerDevice
Win32_UserAccount
Win32_UserDesktop
Win32_VideoConfiguration
Win32_VideoController
Win32_VideoSettings
Win32_VoltageProbe
Win32_WMIElementSetting
Win32_WMISetting

首先，调用ManagementObjectSearcher实例（在本文中的例子里为searcher ）中的Get()方法，该方法将会把返回信息填在这个实例中。然后，你所要做的就是处理这个实例searcher中的数据。

foreach (ManagementObject share in searcher.Get()){// Some Codes ...}

每个ManagementObject的对象中都有一些，我们所需要的数据，当然我们可以接着这么处理这些数据：

foreach (PropertyData PC in share.Properties){//some codes ...}

本文中代码的其它部分只是对于ListView控件的一些操作，很简单，就不再详述了！

/// <summary>
        /// 获得CPU编号
        /// </summary>
        /// <returns></returns>
        public string GetCPUID()
        {
            string cpuid = "";
            ManagementClass mc = new ManagementClass("Win32_Processor");
            ManagementObjectCollection moc = mc.GetInstances();
            foreach (ManagementObject mo in moc)
            {
                cpuid = mo.Properties["ProcessorId"].Value.ToString();
            }
            return cpuid;
        }

        /// <summary>
        /// 获取硬盘序列号
        /// </summary>
        /// <returns></returns>
        public string GetDiskSerialNumber()
        {
            //这种模式在插入一个U盘后可能会有不同的结果，如插入我的手机时
            String HDid = "";
            ManagementClass mc = new ManagementClass("Win32_DiskDrive");
            ManagementObjectCollection moc = mc.GetInstances();
            foreach (ManagementObject mo in moc)
            {
                HDid = (string)mo.Properties["Model"].Value;//SerialNumber
                break;//这名话解决有多个物理盘时产生的问题，只取第一个物理硬盘
            }
            return HDid;

            /*ManagementClass mc = new ManagementClass("Win32_PhysicalMedia");
            ManagementObjectCollection moc = mc.GetInstances();
            string str = "";
            foreach (ManagementObject mo in moc)
            {
                str = mo.Properties["SerialNumber"].Value.ToString();
                break;
            }
            return str;*/
        }

        /// <summary>
        /// 获取网卡硬件地址
        /// </summary>
        /// <returns></returns> 
        public string GetMacAddress()
        {
            string mac = "";
            ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
            ManagementObjectCollection moc = mc.GetInstances();
            foreach (ManagementObject mo in moc)
            {
                if ((bool)mo["IPEnabled"] == true)
                {
                    mac = mo["MacAddress"].ToString();
                    break;
                }
            }
            return mac;
        }

        /// <summary>
        /// 获取IP地址
        /// </summary>
        /// <returns></returns>
        public string GetIPAddress()
        {
            string st = "";
            ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
            ManagementObjectCollection moc = mc.GetInstances();
            foreach (ManagementObject mo in moc)
            {
                if ((bool)mo["IPEnabled"] == true)
                {
                    //st=mo["IpAddress"].ToString(); 
                    System.Array ar;
                    ar = (System.Array)(mo.Properties["IpAddress"].Value);
                    st = ar.GetValue(0).ToString();
                    break;
                }
            }
            return st;
        }

        /// <summary>
        /// 操作系统的登录用户名
        /// </summary>
        /// <returns></returns> 
        public string GetUserName()
        {
            return Environment.UserName;
        }


        /// <summary>
        /// 获取计算机名
        /// </summary>
        /// <returns></returns>
        public string GetComputerName()
        {
            return Environment.MachineName;
        }

        /// <summary>
        /// 操作系统类型
        /// </summary>
        /// <returns></returns> 
        public string GetSystemType()
        {
            string st = "";
            ManagementClass mc = new ManagementClass("Win32_ComputerSystem");
            ManagementObjectCollection moc = mc.GetInstances();
            foreach (ManagementObject mo in moc)
            {
                st = mo["SystemType"].ToString();
            }
            return st;
        }

        /// <summary>
        /// 物理内存
        /// </summary>
        /// <returns></returns>
        public string GetPhysicalMemory()
        {
            string st = "";
            ManagementClass mc = new ManagementClass("Win32_ComputerSystem");
            ManagementObjectCollection moc = mc.GetInstances();
            foreach (ManagementObject mo in moc)
            {
                st = mo["TotalPhysicalMemory"].ToString();
            }
            return st;
        }

        /// <summary>
        /// 显卡PNPDeviceID
        /// </summary>
        /// <returns></returns>
        public string GetVideoPNPID()
        {
            string st = "";
            ManagementObjectSearcher mos = new ManagementObjectSearcher("Select * from Win32_VideoController");
            foreach (ManagementObject mo in mos.Get())
            {
                st = mo["PNPDeviceID"].ToString();
            }
            return st;
        }

        /// <summary>
        /// 声卡PNPDeviceID
        /// </summary>
        /// <returns></returns>
        public string GetSoundPNPID()
        {
            string st = "";
            ManagementObjectSearcher mos = new ManagementObjectSearcher("Select * from Win32_SoundDevice");
            foreach (ManagementObject mo in mos.Get())
            {
                st = mo["PNPDeviceID"].ToString();
            }
            return st;
        }

        /// <summary>
        /// CPU版本信息
        /// </summary>
        /// <returns></returns>
        public string GetCPUVersion()
        {
            string st = "";
            ManagementObjectSearcher mos = new ManagementObjectSearcher("Select * from Win32_Processor");
            foreach (ManagementObject mo in mos.Get())
            {
                st = mo["Version"].ToString();
            }
            return st;
        }

        /// <summary>
        /// CPU名称信息
        /// </summary>
        /// <returns></returns>
        public string GetCPUName()
        {
            string st = "";
            ManagementObjectSearcher driveID = new ManagementObjectSearcher("Select * from Win32_Processor");
            foreach (ManagementObject mo in driveID.Get())
            {
                st = mo["Name"].ToString();
            }
            return st;
        }

        /// <summary>
        /// CPU制造厂商
        /// </summary>
        /// <returns></returns>
        public string GetCPUManufacturer()
        {
            string st = "";
            ManagementObjectSearcher mos = new ManagementObjectSearcher("Select * from Win32_Processor");
            foreach (ManagementObject mo in mos.Get())
            {
                st = mo["Manufacturer"].ToString();
            }
            return st;
        }

        /// <summary>
        /// 主板制造厂商
        /// </summary>
        /// <returns></returns>
        public string GetBoardManufacturer()
        {
            SelectQuery query = new SelectQuery("Select * from Win32_BaseBoard");
            ManagementObjectSearcher mos = new ManagementObjectSearcher(query);
            ManagementObjectCollection.ManagementObjectEnumerator data = mos.Get().GetEnumerator();
            data.MoveNext();
            ManagementBaseObject board = data.Current;
            return board.GetPropertyValue("Manufacturer").ToString();
        }

        /// <summary>
        /// 主板编号
        /// </summary>
        /// <returns></returns>
        public string GetBoardID()
        {
            string st = "";
            ManagementObjectSearcher mos = new ManagementObjectSearcher("Select * from Win32_BaseBoard");
            foreach (ManagementObject mo in mos.Get())
            {
                st = mo["SerialNumber"].ToString();
            }
            return st;
        }

        /// <summary>
        /// 主板型号
        /// </summary>
        /// <returns></returns>
        public string GetBoardType()
        {
            string st = "";
            ManagementObjectSearcher mos = new ManagementObjectSearcher("Select * from Win32_BaseBoard");
            foreach (ManagementObject mo in mos.Get())
            {
                st = mo["Product"].ToString();
            }
            return st;
        }

 from：http://www.cnblogs.com/chengulv/archive/2012/12/29/2839303.html