C#如何取硬件标志的代码

using System;   using System.Runtime.InteropServices;   using System.Management;   namespace Hardware   {   /// <summary>   /// Hardware_Mac 的摘要说明。   /// </summary>   public class HardwareInfo   {   //取机器名   public string GetHostName()   {   return System.Net.Dns.GetHostName();   }   //取CPU编号   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   //取第一块硬盘编号   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);   }   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');   }   }   }