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
9558821702001755616
  
  
   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();
   }
  }