SpeechRecognitionEngine.EmulateRecognizeCompleted 事件

定義

命名空間:

System.Speech.Recognition

組件:

System.Speech.dll

套件:

System.Speech v9.0.0-preview.3.24172.9

來源:

SpeechRecognitionEngine.cs

SpeechRecognitionEngine 完成模擬輸入的非同步辨識作業時引發。

public:
 event EventHandler<System::Speech::Recognition::EmulateRecognizeCompletedEventArgs ^> ^ EmulateRecognizeCompleted;

public event EventHandler<System.Speech.Recognition.EmulateRecognizeCompletedEventArgs> EmulateRecognizeCompleted;

member this.EmulateRecognizeCompleted : EventHandler<System.Speech.Recognition.EmulateRecognizeCompletedEventArgs> 

Public Event EmulateRecognizeCompleted As EventHandler(Of EmulateRecognizeCompletedEventArgs) 

事件類型

EventHandler<EmulateRecognizeCompletedEventArgs>

範例

下列範例是主控台應用程式的一部分，它會載入語音辨識文法，並示範非同步模擬輸入、相關聯的辨識結果，以及語音辨識器所引發的相關聯事件。

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

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

    static void Main(string[] args)  
    {  

      // Initialize an instance of an in-process recognizer.  
      using (SpeechRecognitionEngine recognizer =   
        new SpeechRecognitionEngine(new System.Globalization.CultureInfo("en-US")))  
      {  
        // 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 matches the grammar  
        // and 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("Result of 1st call to EmulateRecognizeAsync = {0}",  
          e.Result.Text ?? "<no text>");  
        Console.WriteLine();  
      }  
      else  
      {  
        Console.WriteLine("No recognition result");  
      }  
    }  

    // Handle the EmulateRecognizeCompleted event.  
    static void EmulateRecognizeCompletedHandler(  
      object sender, EmulateRecognizeCompletedEventArgs e)  
    {  
      if (e.Result == null)  
      {  
        Console.WriteLine("Result of 2nd call to EmulateRecognizeAsync = No result generated.");  
      }  

      // Indicate the asynchronous operation is complete.  
      completed = true;  
    }  
  }  
}  

備註

每個 EmulateRecognizeAsync 方法都會開始非同步辨識作業。 會在 SpeechRecognitionEngine 完成非同步作業時引發 EmulateRecognizeCompleted 事件。

作業 EmulateRecognizeAsync 可以引發 SpeechDetected 、 SpeechHypothesized 、 SpeechRecognitionRejected 和 SpeechRecognized 事件。 事件 EmulateRecognizeCompleted 是指定作業的辨識器引發的最後一個這類事件。

如果模擬的辨識成功，您可以使用下列任一項來存取辨識結果：

• Result事件處理常式 EmulateRecognizeCompleted 中 物件中的 屬性 EmulateRecognizeCompletedEventArgs 。

• ResultSpeechRecognizedEventArgs事件處理常式 SpeechRecognized 中 物件中的 屬性。

如果模擬辨識未成功，則 SpeechRecognized 不會引發事件，而且 Result 會是 Null。

EmulateRecognizeCompletedEventArgs 衍生自 AsyncCompletedEventArgs。

SpeechRecognizedEventArgs 衍生自 RecognitionEventArgs。

當您建立 EmulateRecognizeCompleted 委派 (Delegate) 時，就可以識別即將處理此事件的方法。 若要使事件與您的事件處理常式產生關聯，請將委派的執行個體 (Instance) 加入至事件。 除非您移除委派，否則每當事件發生時就會呼叫事件處理常式。 如需事件處理常式委派的詳細資訊，請參閱 事件和委派。

另請參閱

• EmulateRecognizeCompletedEventArgs
• SpeechRecognized
• SpeechDetected
• SpeechHypothesized
• SpeechRecognitionRejected
• RecognizeCompleted