C method of obtaining machine code of machine name CPU number hard disk number network card mac etc.

In this paper, the method of obtaining machine code by C # is described as an example. Share it for your reference, as follows:

using System.Runtime.InteropServices;
using System.Management;
using System;
public class HardwareInfo
{
  // Take the machine name 
  public string GetHostName()
  {
  return System.Net.Dns.GetHostName();
  }
  // Take CPU Numbering 
  public String GetCpuID()
  {
    try
    {
      ManagementClass mc = new ManagementClass("Win32_Processor");
      ManagementObjectCollection moc = mc.GetInstances();
      String strCpuID = null ;
      foreach( ManagementObject mo in moc )
      {
        strCpuID = mo.Properties["ProcessorId"].Value.ToString();
        break;
      }
      return strCpuID;
    }
    catch
    {
      return "";
    }
  }//end method
// Take the first 1 Block hard disk number 
  public String GetHardDiskID()
  {
    try
    {
      ManagementObjectSearcher searcher = new ManagementObjectSearcher("SELECT * FROM Win32_PhysicalMedia");
      String strHardDiskID = null ;
      foreach(ManagementObject mo in searcher.Get())
      {
        strHardDiskID = mo["SerialNumber"].ToString().Trim();
        break;
      }
      return strHardDiskID ;
    }
    catch
    {
      return "";
    }
  }//end
public enum NCBCONST
{
  NCBNAMSZ =16, /* absolute length of a net name */
  MAX_LANA =254, /* lana's in range 0 to MAX_LANA inclusive */
  NCBENUM =0x37, /* NCB ENUMERATE LANA NUMBERS */
  NRC_GOODRET =0x00, /* good return */
  NCBRESET =0x32, /* NCB RESET */
  NCBASTAT =0x33, /* NCB ADAPTER STATUS */
  NUM_NAMEBUF =30, /* Number of NAME's BUFFER */
}
  [StructLayout(LayoutKind.Sequential)]
  public struct ADAPTER_STATUS
  {
    [MarshalAs(UnmanagedType.ByValArray, SizeConst=6)]
    public byte[] adapter_address;
    public byte rev_major;
    public byte reserved0;
    public byte adapter_type;
    public byte rev_minor;
    public ushort duration;
    public ushort frmr_recv;
    public ushort frmr_xmit;
    public ushort iframe_recv_err;
    public ushort xmit_aborts;
    public uint xmit_success;
    public uint recv_success;
    public ushort iframe_xmit_err;
    public ushort recv_buff_unavail;
    public ushort t1_timeouts;
    public ushort ti_timeouts;
    public uint reserved1;
    public ushort free_ncbs;
    public ushort max_cfg_ncbs;
    public ushort max_ncbs;
    public ushort xmit_buf_unavail;
    public ushort max_dgram_size;
    public ushort pending_sess;
    public ushort max_cfg_sess;
    public ushort max_sess;
    public ushort max_sess_pkt_size;
    public ushort name_count;
  }
  [StructLayout(LayoutKind.Sequential)]
  public struct NAME_BUFFER
  {
    [MarshalAs(UnmanagedType.ByValArray, SizeConst=(int)NCBCONST.NCBNAMSZ)]
    public byte[] name;
    public byte name_num;
    public byte name_flags;
  }
  [StructLayout(LayoutKind.Sequential)]
  public struct NCB
  {
    public byte ncb_command;
    public byte ncb_retcode;
    public byte ncb_lsn;
    public byte ncb_num;
    public IntPtr ncb_buffer;
    public ushort ncb_length;
    [MarshalAs(UnmanagedType.ByValArray, SizeConst=(int)NCBCONST.NCBNAMSZ)]
    public byte[] ncb_callname;
    [MarshalAs(UnmanagedType.ByValArray, SizeConst=(int)NCBCONST.NCBNAMSZ)]
    public byte[] ncb_name;
    public byte ncb_rto;
    public byte ncb_sto;
    public IntPtr ncb_post;
    public byte ncb_lana_num;
    public byte ncb_cmd_cplt;
    [MarshalAs(UnmanagedType.ByValArray, SizeConst=10)]
    public byte[] ncb_reserve;
    public IntPtr ncb_event;
  }
  [StructLayout(LayoutKind.Sequential)]
  public struct LANA_ENUM
  {
    public byte length;
    [MarshalAs(UnmanagedType.ByValArray, SizeConst=(int)NCBCONST.MAX_LANA)]
    public byte[] lana;
  }
  [StructLayout(LayoutKind.Auto)]
  public struct ASTAT
  {
    public ADAPTER_STATUS adapt;
    [MarshalAs(UnmanagedType.ByValArray, SizeConst=(int)NCBCONST.NUM_NAMEBUF)]
    public NAME_BUFFER[] NameBuff;
  }
  public class Win32API
  {
    [DllImport("NETAPI32.DLL")]
    public static extern char Netbios(ref NCB ncb);
  }
  // Network card fetching mac
  public string GetMacAddress()
  {
    string addr="";
    try
    {
      int cb;
      ASTAT adapter;
      NCB Ncb=new NCB();
      char uRetCode;
      LANA_ENUM lenum;
      Ncb.ncb_command = (byte)NCBCONST.NCBENUM;
      cb = Marshal.SizeOf(typeof(LANA_ENUM));
      Ncb.ncb_buffer = Marshal.AllocHGlobal(cb);
      Ncb.ncb_length = (ushort)cb;
      uRetCode = Win32API.Netbios(ref Ncb);
      lenum = (LANA_ENUM)Marshal.PtrToStructure(Ncb.ncb_buffer, typeof(LANA_ENUM));
      Marshal.FreeHGlobal(Ncb.ncb_buffer);
      if(uRetCode != (short)NCBCONST.NRC_GOODRET)
      return "";
      for(int i=0; i < lenum.length ;i++)
      {
        Ncb.ncb_command = (byte)NCBCONST.NCBRESET;
        Ncb.ncb_lana_num = lenum.lana[i];
        uRetCode = Win32API.Netbios(ref Ncb);
        if(uRetCode != (short)NCBCONST.NRC_GOODRET)
        return "";
        Ncb.ncb_command = (byte)NCBCONST.NCBASTAT;
        Ncb.ncb_lana_num = lenum.lana[i];
        Ncb.ncb_callname[0]=(byte)'*';
        cb = Marshal.SizeOf(typeof(ADAPTER_STATUS)) + Marshal.SizeOf(typeof(NAME_BUFFER))*(int)NCBCONST.NUM_NAMEBUF;
        Ncb.ncb_buffer = Marshal.AllocHGlobal(cb);
        Ncb.ncb_length = (ushort)cb;
        uRetCode = Win32API.Netbios(ref Ncb);
        adapter.adapt = (ADAPTER_STATUS)Marshal.PtrToStructure(Ncb.ncb_buffer, typeof(ADAPTER_STATUS));
        Marshal.FreeHGlobal(Ncb.ncb_buffer);
        if (uRetCode == (short)NCBCONST.NRC_GOODRET)
        {
          if(i>0)
          addr += ":";
          addr = string.Format("{0,2:X}{1,2:X}{2,2:X}{3,2:X}{4,2:X}{5,2:X}",
          adapter.adapt.adapter_address[0],
          adapter.adapt.adapter_address[1],
          adapter.adapt.adapter_address[2],
          adapter.adapt.adapter_address[3],
          adapter.adapt.adapter_address[4],
          adapter.adapt.adapter_address[5]);
        }
      }
    }
    catch
    {
    }
    return addr.Replace(' ', '0');
  }
}

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