RecognizerUpdateReachedEventArgs.UserToken Eigenschaft

public:
 property System::Object ^ UserToken { System::Object ^ get(); };

public object UserToken { get; }

member this.UserToken : obj

Public ReadOnly Property UserToken As Object

Eigenschaftswert

Gibt ein -Objekt zurück, das das UserTokenenthält.

Beispiele

Das folgende Beispiel zeigt eine Konsolenanwendung, die Objekte lädt und entlädt Grammar . Die Anwendung verwendet die RequestRecognizerUpdate -Methode, um die Spracherkennungs-Engine anzufordern, anzuhalten, damit sie ein Update erhalten kann. Die -Methode übergibt ein String Objekt für den Parameter, der userToken beschreibt, was die Anwendung nach dem Update erkennt. Anschließend lädt oder entlädt die Anwendung ein Grammar Objekt.

Bei jedem Update schreibt ein Handler für SpeechRecognitionEngine.RecognizerUpdateReached das Ereignis den Inhalt von userToken in die Konsole. Wenn Grammatiken geladen und entladen werden, erkennt die Anwendung zuerst die Namen der Nutztiere, dann die Namen der Nutztiere und die Namen der Früchte, dann nur die Namen der Früchte.

using System;  
using System.Speech.Recognition;  
using System.Collections.Generic;  
using System.Threading;  

namespace SampleRecognition  
{  
  class Program  
  {  
    private static SpeechRecognitionEngine recognizer;  
    public static void Main(string[] args)  
    {  

      // Initialize an in-process speech recognition engine and configure its input.  
      using (recognizer = new SpeechRecognitionEngine(  
        new System.Globalization.CultureInfo("en-US")))  
      {  
        recognizer.SetInputToDefaultAudioDevice();  

        // Create the first grammar - Farm.  
        Choices animals = new Choices(new string[] { "cow", "pig", "goat" });  
        GrammarBuilder farm = new GrammarBuilder(animals);  
        Grammar farmAnimals = new Grammar(farm);  
        farmAnimals.Name = "Farm";  

        // Create the second grammar - Fruit.  
        Choices fruit = new Choices(new string[] { "apples", "peaches", "oranges" });  
        GrammarBuilder favorite = new GrammarBuilder(fruit);  
        Grammar favoriteFruit = new Grammar(favorite);  
        favoriteFruit.Name = "Fruit";  

        // Attach event handlers.  
        recognizer.SpeechRecognized +=  
          new EventHandler<SpeechRecognizedEventArgs>(recognizer_SpeechRecognized);  
        recognizer.RecognizerUpdateReached +=  
          new EventHandler<RecognizerUpdateReachedEventArgs>(recognizer_RecognizerUpdateReached);  
        recognizer.SpeechRecognitionRejected +=  
          new EventHandler<SpeechRecognitionRejectedEventArgs>(recognizer_SpeechRecognitionRejected);  

        // Load the farmAnimals grammar  
        recognizer.LoadGrammar(farmAnimals);  

        // Start continuous, asynchronous recognition.  
        recognizer.RecognizeAsync(RecognizeMode.Multiple);  
        Console.WriteLine("Starting asynchronous recognition...");  
        Console.WriteLine("  Farm animals will now be recognized.");  
        Thread.Sleep(7000);  
        Console.WriteLine();  

        // Load the Fruit grammar.  
        string activeGrammars = "Farm animals and fruits will now be recognized.";  
        recognizer.RequestRecognizerUpdate(activeGrammars);  
        recognizer.LoadGrammarAsync(favoriteFruit);  
        Console.WriteLine();  
        Thread.Sleep(7000);  
        Console.WriteLine();  

        // Unload the Farm grammar.  
        string onlyFruit = "Only fruits will now be recognized.";  
        recognizer.RequestRecognizerUpdate(onlyFruit);  
        recognizer.UnloadGrammar(farmAnimals);  
        Thread.Sleep(7000);  
      }  

      // Keep the console window open.  
      Console.WriteLine();  
      Console.WriteLine("Press any key to exit...");  
      Console.ReadKey();  
    }  

    // At the update, describe what the application will recognize next.  
    public static void recognizer_RecognizerUpdateReached(object sender, RecognizerUpdateReachedEventArgs e)  
    {  
      Console.WriteLine("  Update reached: " + e.UserToken);  
    }  

    // Write the text of the recognized phrase to the console.  
    static void recognizer_SpeechRecognized(object sender, SpeechRecognizedEventArgs e)  
    {  
      Console.WriteLine("    Speech recognized: " + e.Result.Text);  
    }  

    // Write a message to the console when recognition fails.  
    static void recognizer_SpeechRecognitionRejected(object sender, SpeechRecognitionRejectedEventArgs e)  
    {  
      Console.WriteLine("    Recognition attempt failed");  
    }  
  }  
}  

Hinweise

Eine Anwendung gibt einen UserToken an, wenn sie die Generierung eines RecognizerUpdateReached Ereignisses anfordert, indem sie eine der Methoden oder SpeechRecognizer.RequestRecognizerUpdate aufruft, die SpeechRecognitionEngine.RequestRecognizerUpdate einen userToken Parameter annehmen.

Gilt für:

Weitere Informationen

• RecognizerUpdateReachedEventArgs
• RecognizerUpdateReached
• RecognizerUpdateReached
• RequestRecognizerUpdate()
• RequestRecognizerUpdate()