C#使用语音识别时不必要输入

class Program
{
    static void Main(string[] args)
    {
        Brain b = new Brain();
        b.start();
    }
}
public class Map
{
    public string key;
    public string value;
    public Map(string key, string value)
    {
        this.key = key;
        this.value = value;
    }
}
public class Ears
{
    private SpeechRecognitionEngine ears;
    public Ears(List<Map> knowledge, EventHandler<SpeechRecognizedEventArgs> onRecognise, EventHandler<SpeechRecognitionRejectedEventArgs> onReject)
    {

        this.ears = new SpeechRecognitionEngine();

        Choices commands = new Choices();
        foreach (var item in knowledge)
        {
            commands.Add(item.key);
        }
        GrammarBuilder gBuilder = new GrammarBuilder();
        gBuilder.Append(commands);
        Grammar grammar = new Grammar(gBuilder);

        ears.LoadGrammar(grammar);
        ears.SetInputToDefaultAudioDevice();

        ears.RecognizeAsync(RecognizeMode.Multiple);
        ears.SpeechRecognized += onRecognise;
        ears.SpeechRecognitionRejected += onReject;

    }
    public void stop()
    {
        ears.RecognizeAsyncCancel();
    }
    public void start()
    {
        ears.RecognizeAsync(RecognizeMode.Multiple);
    }
}
public class Brain
{
    protected List<Map> commands;
    protected List<Map> answers;

    private readonly Ears ears;
    public Brain()
    {
        commands = new List<Map>();
        commands.Add(new Map("list",""));
        commands.Add(new Map("somethingElse","someValue"));
        ears = new Ears(commands, onRecognized, onRejected);
    }
    private void onRecognized(object sender, SpeechRecognizedEventArgs e)
    {
        Console.WriteLine(e.Result.Text);
        terminateCommands(new Map(e.Result.Text.Trim().ToLower(), null));
    }
    public void start() {
        while (true) {
            string answer = Console.ReadLine();
            if (answer!="")
            {
                terminateCommands(new Map(answer, null));
            }
        }
    }
    private void onRejected(object sender, SpeechRecognitionRejectedEventArgs e)
    {
    }
    private void terminateCommands(Map cmd) {
        Console.WriteLine("need user input");
        var answer = Console.ReadLine();
        Console.WriteLine("need user input again");
        var answer2 = Console.ReadLine();

    }
}

如果我使用键盘,“list”方法就可以很好地工作(由terminateCommands调用)。因此,terminateCommands是从“start”方法调用的。但是,如果我使用VoiceRecognition(基本的Mycrosoft.Speech),并且从eventHandler调用terminateCommands,每次当列表方法需要用户输入时,我都必须按Enter键,写sg,然后再次按Enter键。似乎还有另一个控制台。ReadLine()在每个控制台之前。'list'方法中的ReadLine()。 ears.stop()只会停止语音识别。 Map是一个类,包含2个字符串(值、键)。 我有点困惑。知道吗?