C#列出所有物理网络适配器的方法

using System;using System.Collections;using System.Collections.Generic;using System.Linq;using System.Management;using System.Text;namespace RobvanderWoude{ class ListNICs {  public static ArrayList nics = new ArrayList( );  public static string computer = string.Empty;  // Use global variables, so we only need to run the WMI queries once  public static string nsrootwmi = computer + "root//WMI";  public static string nsrootcimv2 = computer + "root//CIMV2";  public static ManagementObjectSearcher searcher1 = new ManagementObjectSearcher( nsrootwmi, "SELECT * FROM MSNdis_PhysicalMediumType" );  public static ManagementObjectCollection wmi1 = searcher1.Get( );  public static ManagementObjectSearcher searcher2 = new ManagementObjectSearcher( nsrootcimv2, "SELECT * FROM Win32_NetworkAdapter" );  public static ManagementObjectCollection wmi2 = searcher2.Get( );  public static ManagementObjectSearcher searcher3 = new ManagementObjectSearcher( nsrootwmi, "SELECT * FROM MSNdis_LinkSpeed" );  public static ManagementObjectCollection wmi3 = searcher3.Get( );  static int Main( string[] args )  {   try   {    bool listBluetooth = true;    bool listWired = true;    bool listWireless = true;    #region Command line parsing    // Only 2 optional argument allowed: remote computer name and/or adapter type    if ( args.Length > 2 )    {     return WriteError( "Invalid command line arguments" );    }    if ( args.Length > 0 )    {     foreach ( string arg in args )     {      // We'll display a 'friendly' message if help was requested      if ( arg.StartsWith( "/" ) || arg.StartsWith( "-" ) )      {       switch ( arg.ToUpper( ) )       {        case "/?":        case "-?":         return WriteError( string.Empty );        case "/B":        case "/BLUETOOTH":         if ( ( listBluetooth && listWired && listWireless ) == false )         {          return WriteError( "Select a single adapter type only, or omit type to select all" );         }         listWired = false;         listWireless = false;         break;        case "/W":        case "/WIRED":         if ( ( listBluetooth && listWired && listWireless ) == false )         {          return WriteError( "Select a single adapter type only, or omit type to select all" );         }         listBluetooth = false;         listWireless = false;         break;        case "/WL":        case "/WIFI":        case "/WIRELESS":         if ( ( listBluetooth && listWired && listWireless ) == false )         {          return WriteError( "Select a single adapter type only, or omit type to select all" );         }         listBluetooth = false;         listWired = false;         break;        default:         return WriteError( "Invalid command line argument" );       }      }      else      {       if ( !string.IsNullOrEmpty( computer ) )       {        return WriteError( "Do not specify more than one computer name" );       }       computer = "////" + arg + "//";      }     }    }    #endregion Command line parsing    foreach ( ManagementObject queryObj1 in wmi1 )    {     if ( queryObj1["NdisPhysicalMediumType"].ToString( ) == "10" )     {      if ( listBluetooth )      {       AddAdapter( queryObj1["InstanceName"].ToString( ), "Bluetooth" );      }     }     if ( queryObj1["NdisPhysicalMediumType"].ToString( ) == "0" )     {      if ( listWired )      {       AddAdapter( queryObj1["InstanceName"].ToString( ), "Wired" );      }     }     if ( queryObj1["NdisPhysicalMediumType"].ToString( ) == "1" )     {      if ( listWireless )      {       AddAdapter( queryObj1["InstanceName"].ToString( ), "Wireless" );      }     }    }    nics.Sort( );    foreach ( string nic in nics )    {     Console.WriteLine( nic );    }    return 0;   }   catch ( Exception e )   {    return WriteError( e );   }  }  public static void AddAdapter( string name, string type )  {   foreach ( ManagementObject queryObj2 in wmi2 )   {    if ( ( queryObj2["Name"].ToString( ) == name ) && Convert.ToBoolean( queryObj2["PhysicalAdapter"] ) )    {     foreach ( ManagementObject queryObj3 in wmi3 )     {      if ( queryObj3["InstanceName"].ToString( ) == name )      {       nics.Add( String.Format( "{0,6}", Convert.ToInt32( queryObj3["NdisLinkSpeed"] ) / 10000 ) + " Mb/s/t" + String.Format( "{0,-11}", "[" + type + "]" ) + "/t" + name );      }     }    }   }  }  #region Error handling  public static int WriteError( Exception e )  {   return WriteError( e == null ? null : e.Message );  }  public static int WriteError( string errorMessage )  {   if ( string.IsNullOrEmpty( errorMessage ) == false )   {    Console.Error.WriteLine( );    Console.ForegroundColor = ConsoleColor.Red;    Console.Error.Write( "ERROR: " );    Console.ForegroundColor = ConsoleColor.White;    Console.Error.WriteLine( errorMessage );    Console.ResetColor( );   }   Console.Error.WriteLine( );   Console.Error.WriteLine( "ListNICs, Version 1.00" );   Console.Error.WriteLine( "List physical network adapters on the specified computer" );   Console.Error.WriteLine( );   Console.Error.Write( "Usage: " );   Console.ForegroundColor = ConsoleColor.White;   Console.Error.Write( "LISTNICS" );   Console.ResetColor( );   Console.Error.Write( " [ computername ] [ " );   Console.ForegroundColor = ConsoleColor.White;   Console.Error.Write( "/B" );   Console.ResetColor( );   Console.Error.Write( "luetooth | " );   Console.ForegroundColor = ConsoleColor.White;   Console.Error.Write( "/W" );   Console.ResetColor( );   Console.Error.Write( "ired | " );   Console.ForegroundColor = ConsoleColor.White;   Console.Error.Write( "/W" );   Console.ResetColor( );   Console.Error.Write( "ire" );   Console.ForegroundColor = ConsoleColor.White;   Console.Error.Write( "L" );   Console.ResetColor( );   Console.Error.WriteLine( "ess ]" );   Console.Error.WriteLine( );   Console.Error.WriteLine( "Where: /"computername/" is a remote computer name (default: this computer)" );   Console.ForegroundColor = ConsoleColor.White;   Console.Error.Write( "  /B" );   Console.ResetColor( );   Console.Error.Write( "luetooth or " );   Console.ForegroundColor = ConsoleColor.White;   Console.Error.Write( "/B" );   Console.ResetColor( );   Console.Error.WriteLine( " list Bluetooth adapters only (default: all)" );   Console.ForegroundColor = ConsoleColor.White;   Console.Error.Write( "  /W" );   Console.ResetColor( );   Console.Error.Write( "ired  or " );   Console.ForegroundColor = ConsoleColor.White;   Console.Error.Write( "/W" );   Console.ResetColor( );   Console.Error.WriteLine( " list wired adapters only  (default: all)" );   Console.ForegroundColor = ConsoleColor.White;   Console.Error.Write( "  /W" );   Console.ResetColor( );   Console.Error.Write( "ire" );   Console.ForegroundColor = ConsoleColor.White;   Console.Error.Write( "L" );   Console.ResetColor( );   Console.Error.Write( "ess or " );   Console.ForegroundColor = ConsoleColor.White;   Console.Error.Write( "/WL" );   Console.ResetColor( );   Console.Error.WriteLine( " list wireless adapters only (default: all)" );   Console.Error.WriteLine( );   Console.Error.WriteLine( "Written by Rob van der Woude" );   return 1;  }  #endregion Error handling }}