C#返回当前系统所有可用驱动器符号的方法

// The initial C# code for the "plain" WMI query was generated by // WMI Code Generator, Version 5.00, //http://www.robvanderwoude.com/wmigen.php using System; using System.Management; using System.Collections.Generic; namespace RobvanderWoude { public class ListDrives { public static int Main( string[] args ) { try { string computer = string.Empty; #region Command line parsing // Only 1 optional argument allowed: a remote computer name if ( args.Length > 1 ) { throw new Exception( "Invalid command line arguments" ); } if ( args.Length == 1 ) { // We'll display a 'friendly' message if help was requested if ( args[0].StartsWith( "/" ) || args[0].StartsWith( "-" ) ) { switch ( args[0].ToUpper( ) ) { case "/?": case "-?": case "/H": case "-H": case "--H": case "/HELP": case "-HELP": case "--HELP": return WriteError( string.Empty ); default: return WriteError( "Invalid command line argument" ); } } else { computer = "\\\\" + args[0] + "\\"; } } #endregion string wmins = computer + "root\\CIMV2"; ManagementObjectSearcher searcher = new ManagementObjectSearcher( wmins, "SELECT * FROM Win32_LogicalDisk" ); List drives = new List( ); foreach ( ManagementObject queryObj in searcher.Get( ) ) { drives.Add( queryObj["DeviceID"].ToString( ) ); } drives.Sort( ); string drivelist = ""; foreach ( string drive in drives ) { drivelist += ( drive + " " ); } Console.WriteLine( drivelist.Trim( ) ); return 0; } catch ( Exception e ) { return WriteError( e ); } } public static int WriteError( Exception e ) { return WriteError( e == null ? null : e.Message ); } public static int WriteError( string errorMessage ) { string fullpath = Environment.GetCommandLineArgs( ).GetValue( 0 ).ToString( ); string[] program = fullpath.Split( '\\' ); string exename = program[program.GetUpperBound( 0 )]; exename = exename.Substring( 0, exename.IndexOf( '.' ) ); 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( exename + ", Version 1.10" ); Console.Error.WriteLine( "List all drive letters in use on the specified computer" ); Console.Error.WriteLine( ); Console.Error.Write( "Usage: " ); Console.ForegroundColor = ConsoleColor.White; Console.Error.Write( exename.ToUpper( ) ); Console.Error.WriteLine( " [ computername ]" ); Console.ResetColor( ); Console.Error.WriteLine( ); Console.Error.WriteLine( "Where: 'computername' is the (optional) name of a remote computer" ); Console.Error.WriteLine( " (default if not specified: local computer)" ); Console.Error.WriteLine( ); Console.Error.WriteLine( "Written by Rob van der Woude" ); return 1; } } }