C# 一些硬件序列号

using System.Management;using System.Management.Instrumentation;private void GetInfo()    {     string cpuInfo = "";//cpu序列号     ManagementClass cimobject = new ManagementClass("Win32_Processor");     ManagementObjectCollection moc = cimobject.GetInstances();     foreach(ManagementObject mo in moc)     {      cpuInfo = mo.Properties["ProcessorId"].Value.ToString();      Response.Write ("cpu序列号："+cpuInfo.ToString ());     }     //获取硬盘ID     String HDid;     ManagementClass cimobject1 = new ManagementClass("Win32_DiskDrive");     ManagementObjectCollection moc1 = cimobject1.GetInstances();     foreach(ManagementObject mo in moc1)     {      HDid = (string)mo.Properties["Model"].Value;      Response.Write ("硬盘序列号："+HDid.ToString ());     }     //获取网卡硬件地址             ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");     ManagementObjectCollection moc2 = mc.GetInstances();     foreach(ManagementObject mo in moc2)     {      if((bool)mo["IPEnabled"] == true)       Response.Write("MAC address\t{0}"+mo["MacAddress"].ToString());      mo.Dispose();     }    }     public static float GetCPUPersent()    {        float cpuload = 0;        const string categoryname = "processor";        const string countername = "% processor time";        const string instancename = "_total";        PerformanceCounter pc = new PerformanceCounter(categoryname, countername, instancename);        int i = 10;        while (i > 0)        {            Thread.Sleep(1000); // wait for 1 second            cpuload = pc.NextValue();            if (cpuload > 0)            {                break;            }            i--;        }        return cpuload;    }    public static void GetDiskSpace(string path, out long DiskAll, out long DiskActive)    {        DiskAll = 0;        DiskActive = 0;        long a, b, c;        int aaa = GetDiskFreeSpaceEx(path, out a, out b, out c);        DiskAll = (long)(b / 1024 / 1024);        DiskActive = (long)(a / 1024 / 1024);    }    public static void GetMemoryInfo(out uint MemoryAll, out uint MemoryUsed)    {        MemoryAll = 0;        MemoryUsed = 0;        MEMORY_INFO MemInfo = new MEMORY_INFO();        GlobalMemoryStatus(ref  MemInfo);        MemoryAll = MemInfo.dwTotalPhys / 1024 / 1024;        MemoryUsed = (MemInfo.dwTotalPhys - MemInfo.dwAvailPhys) / 1024 / 1024;    }       [DllImport("kernel32")]    public static extern void GlobalMemoryStatus(ref  MEMORY_INFO meminfo);    //定义内存的信息结构     [StructLayout(LayoutKind.Sequential)]    public struct MEMORY_INFO    {        public uint dwLength;        public uint dwMemoryLoad;        public uint dwTotalPhys;        public uint dwAvailPhys;        public uint dwTotalPageFile;        public uint dwAvailPageFile;        public uint dwTotalVirtual;        public uint dwAvailVirtual;    }    [DllImport("kernel32.dll", EntryPoint = "GetDiskFreeSpaceExA")]    public static extern int GetDiskFreeSpaceEx(string lpRootPathName, out long lpFreeBytesAvailable, out long lpTotalNumberOfBytes, out long lpTotalNumberOfFreeBytes);