C# Console KeyAvailable

Description

Console KeyAvailable gets a value indicating whether a key press is available in the input stream.

Syntax

Console.KeyAvailable has the following syntax.


public static bool KeyAvailable { get; }

Example

The following example demonstrates how to use the KeyAvailable property to create a loop that runs until a key is pressed.


using System;/*  w w w  . j  a  v  a 2  s.c  o  m*/
using System.Threading;

class Sample 
{
    public static void Main() 
    {
        ConsoleKeyInfo cki = new ConsoleKeyInfo();
    
        do {
            Console.WriteLine("\nPress a key to display; press the 'x' key to quit.");
            while (Console.KeyAvailable == false)
                Thread.Sleep(250); // Loop until input is entered.
            cki = Console.ReadKey(true);
            Console.WriteLine("You pressed the '{0}' key.", cki.Key);
        } while(cki.Key != ConsoleKey.X);
    }
}