Console ReadKey async or callback?

Question

I am trying to do a press Q to quit thing in the console window. I dont like my current implementation. Is there a way i can async or use a callback to get keys from the con

Answer 1

I didn't find any of the exisiting answers entirely satisfactory so I wrote my own, to work with TAP and .Net 4.5.

/// 

/// Obtains the next character or function key pressed by the user
/// asynchronously. The pressed key is displayed in the console window.
/// 
/// 
/// The cancellation token that can be used to cancel the read.
/// 
/// 
/// The number of milliseconds to wait between polling the
///  property.
/// 
/// Information describing what key was pressed.
/// 
/// Thrown when the read is cancelled by the user input (Ctrl+C etc.)
/// or when cancellation is signalled via
/// the passed .
/// 
public static async Task ReadKeyAsync(
    CancellationToken cancellationToken,
    int responsiveness = 100)
{
    var cancelPressed = false;
    var cancelWatcher = new ConsoleCancelEventHandler(
        (sender, args) => { cancelPressed = true; });
    Console.CancelKeyPress += cancelWatcher;
    try
    {
        while (!cancelPressed && !cancellationToken.IsCancellationRequested)
        {
            if (Console.KeyAvailable)
            {
                return Console.ReadKey();
            }

            await Task.Delay(
                responsiveness,
                cancellationToken);
        }

        if (cancelPressed)
        {
            throw new TaskCanceledException(
                "Readkey canceled by user input.");
        }

        throw new TaskCanceledException();
    }
    finally
    {
        Console.CancelKeyPress -= cancelWatcher;
    }
}