语音识别与言论自由(Speech Recognition with free speech)

我需要帮助。我想做出会承认我说的话，做的东西，我说的应用程序。例如：

如果我说open [notepad] ，其中[notepad]可以是任何应用程序的名称，它需要打开记事本。

我想，我需要同时使用语法和DictationGrammar，但我不知道怎么办。请帮我。谢谢。

我的代码现在看起来是这样的：

    string WelcomeSentence = "Hello sir, how are you today";
    SpeechSynthesizer sSynth = new SpeechSynthesizer();
    PromptBuilder pBuilder = new PromptBuilder();
    SpeechRecognitionEngine sRecognize = new SpeechRecognitionEngine();

    private void frmMain_Load(object sender, EventArgs e)
    {
        sSynth.SelectVoice("IVONA Amy");
        sSynth.SetOutputToDefaultAudioDevice();
        pBuilder.ClearContent();
        pBuilder.AppendText(WelcomeSentence);
        sSynth.Speak(pBuilder);

        Choices sList = new Choices();
        sList.Add(File.ReadAllLines(@"Commands.ekd"));
        Grammar gr = new Grammar(new GrammarBuilder(sList));
        DictationGrammar dgr = new DictationGrammar();
        try
        {
            sRecognize.RequestRecognizerUpdate();
            sRecognize.LoadGrammar(gr);
            sRecognize.SpeechRecognized += sRecognize_SpeechRecognized;
            sRecognize.SetInputToDefaultAudioDevice();
            sRecognize.RecognizeAsync(RecognizeMode.Multiple);
            sRecognize.Recognize(); 
        }
        catch { return; }
    }
    private void sRecognize_SpeechRecognized(object sender, SpeechRecognizedEventArgs e)
    {
        if (e.Result.Text == "open notepad")
        {
            System.Diagnostics.Process.Start(@"C:\Windows\System32\Notepad.exe");
        }
        else
        {
            pBuilder.ClearContent();
            pBuilder.AppendText(e.Result.Text);
            sSynth.Speak(pBuilder);
        }
    }

请帮忙。

随着一个答案下面我发布几个月前，我提出这个建议。

要知道，我要离开了SpeechFactory类和大部分的MySpeechMethods类，请从对方的回答复制。此外，如在对方的回答指出，你必须做一些错误处理。做了这番解释，你会修改自己的代码这种方式。

private void sRecognize_SpeechRecognized(object sender, SpeechRecognizedEventArgs e)
{
    var methods = new MySpeechMethods();
    MethodInfo myMethod;
    myMethod = SpeechFactory.GetSpeechMethod(e.Result.Text);

    if(myMethod != null) return;        
    pBuilder.ClearContent();
    pBuilder.AppendText(e.Result.Text);
    sSynth.Speak(pBuilder);
}

然后在MySpeechMethods你将有你的命令。

public class MySpeechMethods
{
    [Speech("Open Notepad")]
    public void OpenNotepad()
    {
       System.Diagnostics.Process.Start(@"C:\Windows\System32\Notepad.exe");
    }
//...