Question

我是C＃的新手，我不确定是否在这个问题的正确论坛上写作。我正在尝试实现文本程序语音。（winforms）我将Windows.cs.xml代码移至我的程序（Form1.cs），但遇到此错误

“名称AudioLevelUpdated在当前上下文中不存在”

。我尝试添加Assembly（System.Speech）并使用指令，但没有任何改进。请帮助

这是代码

SpeechRecognitionEngine speechRecognitionEngine = null;

    /// <summary>
    /// list of predefined commands
    /// </summary>
    List<Word> words = new List<Word>();

    #endregion

    #region ctor

    /// <summary>
    /// Initializes a new instance of the <see cref="Form1"/> class.
    /// </summary>
    //public event EventHandler<AudioLevelUpdatedEventArgs> AudioLevelUpdated;
    public Form1()
    {
        InitializeComponent();

        try
        {
            // create the engine
            speechRecognitionEngine = createSpeechEngine("de-DE");

            // hook to events
            speechRecognitionEngine.AudioLevelUpdated += new EventHandler<AudioLevelUpdatedEventArgs>(engine_AudioLevelUpdated);
            speechRecognitionEngine.SpeechRecognized += new EventHandler<SpeechRecognizedEventArgs>(engine_SpeechRecognized);

            // load dictionary
            loadGrammarAndCommands();

            // use the system's default microphone
            speechRecognitionEngine.SetInputToDefaultAudioDevice();

            // start listening
            speechRecognitionEngine.RecognizeAsync(RecognizeMode.Multiple);
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message, "Voice recognition failed");
        }
    }

Answer 1

通过查看您的代码，我看到这两行：

speechRecognitionEngine.AudioLevelUpdated += new EventHandler<AudioLevelUpdatedEventArgs>(engine_AudioLevelUpdated);
speechRecognitionEngine.SpeechRecognized += new EventHandler<SpeechRecognizedEventArgs>(engine_SpeechRecognized);

我不确定它们是正确的。至少我以前从未见过事件处理程序以这种格式订阅。编辑：只是尝试以这种方式订阅事件，它的工作原理。似乎太冗长了！

通常它们看起来像：

speechRecognitionEngine.AudioLevelUpdated += engine_AudioLevelUpdated;
speechRecognitionEngine.SpeechRecognized += engine_SpeechRecognized;

然后您将拥有处理程序方法：

private void engine_AudioLevelUpdated(object sender, AudioLevelUpdatedEventArgs e)
{
    // Your code when the event fires.
}

private void engine_SpeechRecognized(object sender, SpeechRecognizedEventArgs e)
{
    // Your code when the event fires.
}

在您的代码中没有看到您已实现这些方法的地方。那可能是您的错误所在吗？

我已经将System.Speech添加到测试应用程序中，并实例化了SpeechRecognitionEngine并订阅了这两个事件，并且该应用程序启动时没有错误。

名称AudioLevelUpdated在当前上下文中不存在

1 个答案: