work24 通过本文主要向大家介绍了c#键盘控制,c#控制台输出,c#控制台程序一闪而过,c#控制台应用程序,c#控制台输入等相关知识,希望对您有所帮助,也希望大家支持linkedu.com www.linkedu.com
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;
}
}
}
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希望本文所述对大家的C#程序设计有所帮助。
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