本文实例讲述了C#隐藏控制台键盘输入的方法。分享给大家供大家参考。具体如下：
using System; namespace RobvanderWoude { class HideInput { static int Main( string[] args ) { try { bool clearscreen = false; if ( args.Length > 1 ) { return WriteError( "Too many command line arguments" ); } if ( args.Length == 1 ) { switch ( args[0].ToUpper( ) ) { case "/C": clearscreen = true; break; case "/": return WriteError( ); default: return WriteError( "Invalid command line argument "" + args[0] + """ ); } } // Set console foreground color to background color to hide what's being typed ConsoleColor color = Console.ForegroundColor; Console.ForegroundColor = Console.BackgroundColor; // Read 1 line of input from the console string input = Console.ReadLine( ); // Restore the original console foreground color Console.ForegroundColor = color; // Clear the screen id specified on the command line if ( clearscreen ) { Console.Clear( ); } // Display the input - which should be redirected for this program to be of any use Console.WriteLine( input ); // Returncode 0 for success, or 1 if the input was empty or whitespace only if ( string.IsNullOrWhiteSpace( input ) ) { return 1; } else { return 0; } } catch ( Exception e ) { return WriteError( e.Message ); } } public static int WriteError( string errorMessage = "" ) { Console.ResetColor( ); 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( "HideInput, Version 1.10" ); Console.Error.WriteLine( "Batch utility to read 1 line of input while hiding what's being typed, by" ); Console.Error.WriteLine( "temporarily setting the console foreground color equal to its background color" ); Console.Error.WriteLine( ); Console.Error.Write( "Usage: FOR /F "tokens=*" %%A IN ('" ); Console.ForegroundColor = ConsoleColor.White; Console.Error.Write( "HIDEINPUT" ); Console.ResetColor( ); Console.Error.WriteLine( "') DO SET password=%%A" ); Console.Error.Write( " or: FOR /F "tokens=*" %%A IN ('" ); Console.ForegroundColor = ConsoleColor.White; Console.Error.Write( "HIDEINPUT /C" ); Console.ResetColor( ); Console.Error.WriteLine( "') DO SET password=%%A" ); Console.Error.WriteLine( ); Console.Error.Write( "Where: " ); Console.ForegroundColor = ConsoleColor.White; Console.Error.Write( "/C" ); Console.ResetColor( ); Console.Error.WriteLine( " clears the screen to remove what's typed from the screen buffer" ); Console.Error.WriteLine( ); Console.Error.WriteLine( "Written by Rob van der Woude" ); return 1; } } }
希望本文所述对大家的C#程序设计有所帮助。
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