读取硬盘序列号

private void ReadHdId()
{
String HDid;
System.Management.ManagementClass cimobject = new System.Management.ManagementClass("Win32_PhysicalMedia");
System.Management.ManagementObjectCollection moc = cimobject.GetInstances();
foreach (System.Management.ManagementObject mo in moc)
{
HDid = (string)mo.Properties["SerialNumber"].Value;
Response.Write("硬盘ID:" + HDid + "<br>");
}
}