我如何继续运行我的控制台应用程序，直到一个键按下(如Esc按下?)
我假设它环绕着一个while循环。我不喜欢ReadKey，因为它阻塞操作并要求一个键，而不是只是继续听按键。
如何做到这一点呢?
当前回答
Console.WriteLine("Hello");
var key = Console.ReadKey();
DateTime start = DateTime.Now;
bool gotKey = Console.KeyAvailable;
while ((DateTime.Now - start).TotalSeconds < 2)
{
if (key.Key == ConsoleKey.Escape)
{
Environment.Exit(0);
}
else if (key.Key == ConsoleKey.Enter)
{
break;
}
其他回答
从视频诅咒的。net控制台应用程序在c#由杰森罗伯茨在http://www.pluralsight.com
我们可以这样做，有多个运行过程
static void Main(string[] args)
{
Console.CancelKeyPress += (sender, e) =>
{
Console.WriteLine("Exiting...");
Environment.Exit(0);
};
Console.WriteLine("Press ESC to Exit");
var taskKeys = new Task(ReadKeys);
var taskProcessFiles = new Task(ProcessFiles);
taskKeys.Start();
taskProcessFiles.Start();
var tasks = new[] { taskKeys };
Task.WaitAll(tasks);
}
private static void ProcessFiles()
{
var files = Enumerable.Range(1, 100).Select(n => "File" + n + ".txt");
var taskBusy = new Task(BusyIndicator);
taskBusy.Start();
foreach (var file in files)
{
Thread.Sleep(1000);
Console.WriteLine("Procesing file {0}", file);
}
}
private static void BusyIndicator()
{
var busy = new ConsoleBusyIndicator();
busy.UpdateProgress();
}
private static void ReadKeys()
{
ConsoleKeyInfo key = new ConsoleKeyInfo();
while (!Console.KeyAvailable && key.Key != ConsoleKey.Escape)
{
key = Console.ReadKey(true);
switch (key.Key)
{
case ConsoleKey.UpArrow:
Console.WriteLine("UpArrow was pressed");
break;
case ConsoleKey.DownArrow:
Console.WriteLine("DownArrow was pressed");
break;
case ConsoleKey.RightArrow:
Console.WriteLine("RightArrow was pressed");
break;
case ConsoleKey.LeftArrow:
Console.WriteLine("LeftArrow was pressed");
break;
case ConsoleKey.Escape:
break;
default:
if (Console.CapsLock && Console.NumberLock)
{
Console.WriteLine(key.KeyChar);
}
break;
}
}
}
}
internal class ConsoleBusyIndicator
{
int _currentBusySymbol;
public char[] BusySymbols { get; set; }
public ConsoleBusyIndicator()
{
BusySymbols = new[] { '|', '/', '-', '\\' };
}
public void UpdateProgress()
{
while (true)
{
Thread.Sleep(100);
var originalX = Console.CursorLeft;
var originalY = Console.CursorTop;
Console.Write(BusySymbols[_currentBusySymbol]);
_currentBusySymbol++;
if (_currentBusySymbol == BusySymbols.Length)
{
_currentBusySymbol = 0;
}
Console.SetCursorPosition(originalX, originalY);
}
}
根据我的经验，在控制台应用中，读取最后按下的键的最简单方法如下(以箭头键为例):
ConsoleKey readKey = Console.ReadKey ().Key;
if (readKey == ConsoleKey.LeftArrow) {
<Method1> (); //Do something
} else if (readKey == ConsoleKey.RightArrow) {
<Method2> (); //Do something
}
我用来避免循环，而不是我在一个方法中写上面的代码，我在“Method1”和“Method2”的末尾调用它，所以，在执行“Method1”或“Method2”后，Console.ReadKey()。键已准备好再次读取键。
Console.WriteLine("Hello");
var key = Console.ReadKey();
DateTime start = DateTime.Now;
bool gotKey = Console.KeyAvailable;
while ((DateTime.Now - start).TotalSeconds < 2)
{
if (key.Key == ConsoleKey.Escape)
{
Environment.Exit(0);
}
else if (key.Key == ConsoleKey.Enter)
{
break;
}
下面是一种方法，可以让您在不同的线程上执行某些操作，并开始侦听不同线程中按下的键。当您的实际进程结束或用户按Esc键终止该进程时，控制台将停止其处理。
class SplitAnalyser
{
public static bool stopProcessor = false;
public static bool Terminate = false;
static void Main(string[] args)
{
Console.ForegroundColor = ConsoleColor.Green;
Console.WriteLine("Split Analyser starts");
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine("Press Esc to quit.....");
Thread MainThread = new Thread(new ThreadStart(startProcess));
Thread ConsoleKeyListener = new Thread(new ThreadStart(ListerKeyBoardEvent));
MainThread.Name = "Processor";
ConsoleKeyListener.Name = "KeyListener";
MainThread.Start();
ConsoleKeyListener.Start();
while (true)
{
if (Terminate)
{
Console.WriteLine("Terminating Process...");
MainThread.Abort();
ConsoleKeyListener.Abort();
Thread.Sleep(2000);
Thread.CurrentThread.Abort();
return;
}
if (stopProcessor)
{
Console.WriteLine("Ending Process...");
MainThread.Abort();
ConsoleKeyListener.Abort();
Thread.Sleep(2000);
Thread.CurrentThread.Abort();
return;
}
}
}
public static void ListerKeyBoardEvent()
{
do
{
if (Console.ReadKey(true).Key == ConsoleKey.Escape)
{
Terminate = true;
}
} while (true);
}
public static void startProcess()
{
int i = 0;
while (true)
{
if (!stopProcessor && !Terminate)
{
Console.ForegroundColor = ConsoleColor.White;
Console.WriteLine("Processing...." + i++);
Thread.Sleep(3000);
}
if(i==10)
stopProcessor = true;
}
}
}
最短的方法:
Console.WriteLine("Press ESC to stop");
while (!(Console.KeyAvailable && Console.ReadKey(true).Key == ConsoleKey.Escape))
{
// do something
}
Console. readkey()是一个阻塞函数，它会停止程序的执行并等待按键，但多亏了检查Console。KeyAvailable键，while循环不会被阻塞，而是一直运行，直到按下Esc键。
