C#中获取逻辑磁盘、网卡MAC地址、CPUID等信息的代码

using System;
using System.Collections.Generic;
using System.Text;

using System.Diagnostics;
using System.Management;

namespace MachineInfo
{
    class GetInfo
    {
        public static string GetVolumeSerial(string strDriveLetter)
        {
            if (strDriveLetter == "" || strDriveLetter == null)
            {
                strDriveLetter = "C:";
            }
            ManagementObject disk = new ManagementObject("win32_logicaldisk.deviceid=\"" + strDriveLetter + "\"");
            disk.Get();
            Debug.WriteLine("FreeSpace: " + disk["FreeSpace"].ToString());
            return disk["VolumeSerialNumber"].ToString();
        }

        public static string GetMACAddress()
        {
            ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
            ManagementObjectCollection moc = mc.GetInstances();
            string MACAddress = String.Empty;
            foreach (ManagementObject mo in moc)
            {
                if (mo["MacAddress"] != null)
                {
                    Debug.WriteLine("Network Adapter Description: " + mo["Description"].ToString() + "-" + mo["MacAddress"].ToString());
                }
                if (MACAddress == String.Empty)
                {
                    if ((bool)mo["IPEnabled"] == true)
                    {
                        MACAddress = mo["MacAddress"].ToString();
                    }
                }
                mo.Dispose();
            }
            MACAddress = MACAddress.Replace(":", "");
            return MACAddress;
        }


        public static string GetCPUId()
        {
            string cpuInfo = String.Empty;
            string temp = String.Empty;
            ManagementClass mc = new ManagementClass("Win32_Processor");
            ManagementObjectCollection moc = mc.GetInstances();
            foreach (ManagementObject mo in moc)
            {
                Debug.WriteLine("Processor Caption: " + mo.Properties["Caption"].Value.ToString());
                Debug.WriteLine("Processor MaxClockSpeed: " + mo.Properties["MaxClockSpeed"].Value.ToString());
                if (cpuInfo == String.Empty)
                {
                    cpuInfo = mo.Properties["ProcessorId"].Value.ToString();
                }
            }
            return cpuInfo;
        }

    }
}