.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,
       adapter.adapt.adapter_address,
       adapter.adapt.adapter_address,
       adapter.adapt.adapter_address,
       adapter.adapt.adapter_address);
     }
    }
   }
   catch
   {}
   return addr.Replace('' '', ''0'');
  }

}
}