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();
}
}

来源:网络