asp.net 获取cpu序列号 硬盘ID 网卡硬地址

using System;
using System.Management;
using System.IO;
using System.Runtime.InteropServices;
using System.Security.Cryptography;
using System.Text;
using Microsoft.Win32;

namespace LC.Common.Utilities
{
    ///   <summary> 
    ///   register   的摘要说明。 
    ///   注册软件所用到的类 
    ///   </summary>
    public class Register
    {

        #region   获取cpu序列号   硬盘ID   网卡硬地址
        ///   <summary> 
        ///   获取cpu序列号     
        ///   </summary> 
        ///   <returns> string </returns> 
        public string GetCpuInfo()
        {
            string cpuInfo = " ";
            ManagementClass cimobject = new ManagementClass("Win32_Processor");
            ManagementObjectCollection moc = cimobject.GetInstances();
            foreach (ManagementObject mo in moc)
            {
                cpuInfo = mo.Properties["ProcessorId"].Value.ToString();
            }
            return cpuInfo.ToString();
        }
        ///   <summary> 
        ///   获取硬盘ID     
        ///   </summary> 
        ///   <returns> string </returns> 
        public string GetHDid()
        {
            string HDid = " ";
            ManagementClass cimobject1 = new ManagementClass("Win32_DiskDrive");
            ManagementObjectCollection moc1 = cimobject1.GetInstances();
            foreach (ManagementObject mo in moc1)
            {
                HDid = (string)mo.Properties["Model"].Value;
            }
            return HDid.ToString();
        }

        ///   <summary> 
        ///   获取网卡硬件地址 
        ///   </summary> 
        ///   <returns> string </returns> 
        public string GetMoAddress()
        {
            string MoAddress = " ";
            ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
            ManagementObjectCollection moc2 = mc.GetInstances();
            foreach (ManagementObject mo in moc2)
            {
                if ((bool)mo["IPEnabled"] == true)
                    MoAddress = mo["MacAddress"].ToString();
                mo.Dispose();
            }
            return MoAddress.ToString();
        }

        #endregion
    }
}