SpeechRecognizer.LoadGrammar(Grammar) 方法

  • 参考

定义

命名空间:
System.Speech.Recognition
程序集:
System.Speech.dll

加载语音识别语法。

public:
 void LoadGrammar(System::Speech::Recognition::Grammar ^ grammar);
public void LoadGrammar (System.Speech.Recognition.Grammar grammar);
member this.LoadGrammar : System.Speech.Recognition.Grammar -> unit
Public Sub LoadGrammar (grammar As Grammar)

参数

grammar
Grammar

加载语音识别语法。

示例

下面的示例是一个控制台应用程序的一部分，该应用程序加载语音识别语法并演示异步仿真输入、关联的识别结果和语音识别器引发的相关事件。 如果 Windows 语音识别未运行，则启动此应用程序也将启动 Windows 语音识别。 如果 Windows 语音识别处于 睡眠 状态，则 EmulateRecognizeAsync 始终返回 null。

using System;  
using System.Speech.Recognition;  
using System.Threading;  

namespace SharedRecognizer  
{  
  class Program  
  {  
    // Indicate whether the asynchronous emulate recognition  
    // operation has completed.  
    static bool completed;  

    static void Main(string[] args)  
    {  
      // Initialize an instance of the shared recognizer.  
      using (SpeechRecognizer recognizer = new SpeechRecognizer())  
      {  
        // Create and load a sample grammar.  
        Grammar testGrammar =  
          new Grammar(new GrammarBuilder("testing testing"));  
        testGrammar.Name = "Test Grammar";  

        recognizer.LoadGrammar(testGrammar);  

        // Attach event handlers for recognition events.  
        recognizer.SpeechRecognized +=  
          new EventHandler<SpeechRecognizedEventArgs>(  
            SpeechRecognizedHandler);  
        recognizer.EmulateRecognizeCompleted +=  
          new EventHandler<EmulateRecognizeCompletedEventArgs>(  
            EmulateRecognizeCompletedHandler);  

        completed = false;  

        // This EmulateRecognizeAsync call generates a SpeechRecognized event.  
        recognizer.EmulateRecognizeAsync("testing testing");  

        // Wait for the asynchronous operation to complete.  
        while (!completed)  
        {  
          Thread.Sleep(333);  
        }  

        completed = false;  

        // This EmulateRecognizeAsync call does not match the grammar   
        // or generate a SpeechRecognized event.  
        recognizer.EmulateRecognizeAsync("testing one two three");  

        // Wait for the asynchronous operation to complete.  
        while (!completed)  
        {  
          Thread.Sleep(333);  
        }  
      }  

      Console.WriteLine();  
      Console.WriteLine("Press any key to exit...");  
      Console.ReadKey();  
    }  

    // Handle the SpeechRecognized event.  
    static void SpeechRecognizedHandler(  
      object sender, SpeechRecognizedEventArgs e)  
    {  
      if (e.Result != null)  
      {  
        Console.WriteLine("Recognition result = {0}",  
          e.Result.Text ?? "<no text>");  
      }  
      else  
      {  
        Console.WriteLine("No recognition result");  
      }  
    }   

    // Handle the EmulateRecognizeCompleted event.   
    static void EmulateRecognizeCompletedHandler(  
      object sender, EmulateRecognizeCompletedEventArgs e)  
    {  
      if (e.Result == null)  
      {  
        Console.WriteLine("No result generated.");  
      }  

      completed = true;  
    }  
  }  
}

注解

如果语音识别语法已加载、正在异步加载或者未能加载到任何识别器，共享识别器将引发异常。 如果识别器正在运行，则应用程序必须使用在 RequestRecognizerUpdate 加载、卸载、启用或禁用语法之前暂停语音识别引擎。

若要以异步方式加载语音识别语法，请使用 LoadGrammarAsync 方法。

适用于

另请参阅