LoadGrammarCompletedEventArgs LoadGrammarCompletedEventArgs LoadGrammarCompletedEventArgs LoadGrammarCompletedEventArgs Class

Definizione

Fornisce i dati per l'evento LoadGrammarCompleted di un oggetto SpeechRecognizer o SpeechRecognitionEngine.Provides data for the LoadGrammarCompleted event of a SpeechRecognizer or SpeechRecognitionEngine object.

public ref class LoadGrammarCompletedEventArgs : System::ComponentModel::AsyncCompletedEventArgs
public class LoadGrammarCompletedEventArgs : System.ComponentModel.AsyncCompletedEventArgs
type LoadGrammarCompletedEventArgs = class
    inherit AsyncCompletedEventArgs
Public Class LoadGrammarCompletedEventArgs
Inherits AsyncCompletedEventArgs
Ereditarietà
LoadGrammarCompletedEventArgsLoadGrammarCompletedEventArgsLoadGrammarCompletedEventArgsLoadGrammarCompletedEventArgs

Esempi

Nell'esempio seguente crea un sistema di riconoscimento vocale condiviso e quindi crea due tipi di grammatiche per il riconoscimento delle parole specifiche e per accettare la dettatura gratuita.The following example creates a shared speech recognizer, and then creates two types of grammars for recognizing specific words and for accepting free dictation. Nell'esempio vengono caricati in modo asincrono tutte le grammatiche create per il riconoscimento.The example asynchronously loads all the created grammars to the recognizer. Gestori per il riconoscimento LoadGrammarCompleted e SpeechRecognized eventi segnalano i risultati di riconoscimento e la grammatica di cui è stata usata per eseguire il riconoscimento.Handlers for the recognizer's LoadGrammarCompleted and SpeechRecognized events report the results of recognition and which grammar was used to perform the recognition.

using System;  
using System.Speech.Recognition;  

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

      // Initialize a shared speech recognition engine.  
      recognizer = new SpeechRecognizer();  

        // Add a handler for the LoadGrammarCompleted event.  
        recognizer.LoadGrammarCompleted +=  
          new EventHandler<LoadGrammarCompletedEventArgs>(recognizer_LoadGrammarCompleted);  

        // Add a handler for the SpeechRecognized event.  
        recognizer.SpeechRecognized +=  
          new EventHandler<SpeechRecognizedEventArgs>(recognizer_SpeechRecognized);  

        // Add a handler for the StateChanged event.  
        recognizer.StateChanged +=  
          new EventHandler<StateChangedEventArgs>(recognizer_StateChanged);  

        // Create the "yesno" grammar and build it into a Grammar object.  
        Choices yesChoices = new Choices(new string[] { "yes", "yup", "yah}" });  
        SemanticResultValue yesValue =  
            new SemanticResultValue(yesChoices, (bool)true);  
        Choices noChoices = new Choices(new string[] { "no", "nope", "nah" });  
        SemanticResultValue noValue =  
            new SemanticResultValue(noChoices, (bool)false);  
        SemanticResultKey yesNoKey =  
            new SemanticResultKey("yesno", new Choices(new GrammarBuilder[] { yesValue, noValue }));  
        Grammar yesnoGrammar = new Grammar(yesNoKey);  
        yesnoGrammar.Name = "yesNo";  

        // Create the "done" grammar within the constructor of a Grammar object.  
        Grammar doneGrammar =  
        new Grammar(new GrammarBuilder(new Choices(new string[] { "done", "exit", "quit", "stop" })));  
        doneGrammar.Name = "Done";  

        // Create a dictation grammar.  
        Grammar dictation = new DictationGrammar();  
        dictation.Name = "Dictation";  

        // Load grammars to the recognizer.  
        recognizer.LoadGrammarAsync(yesnoGrammar);  
        recognizer.LoadGrammarAsync(doneGrammar);  
        recognizer.LoadGrammarAsync(dictation);  

        // Keep the console window open.  
        Console.ReadLine();  
      }  

    // Handle the SpeechRecognized event.  
    static void recognizer_SpeechRecognized(object sender, SpeechRecognizedEventArgs e)  
    {  
      Console.WriteLine("Grammar({0}): {1}", e.Result.Grammar.Name, e.Result.Text);  

      // Add event handler code here.  
    }  

    // Handle the LoadGrammarCompleted event.   
    static void recognizer_LoadGrammarCompleted(object sender, LoadGrammarCompletedEventArgs e)  
    {  
      string grammarName = e.Grammar.Name;  
      bool grammarLoaded = e.Grammar.Loaded;  

      if (e.Error != null)  
      {  

        Console.WriteLine("LoadGrammar for {0} failed with a {1}.",  
        grammarName, e.Error.GetType().Name);  

        // Add exception handling code here.  
      }  

      Console.WriteLine("Grammar {0} {1} loaded.",  
      grammarName, (grammarLoaded) ? "is" : "is not");  
    }  

    // Put the shared speech recognizer into "listening" mode.   
    static void recognizer_StateChanged(object sender, StateChangedEventArgs e)  
    {  
      if (e.RecognizerState != RecognizerState.Stopped)  
      {  
        recognizer.EmulateRecognizeAsync("Start listening");  
      }  
    }  
  }  
}  

Commenti

Un'istanza di LoadGrammarCompletedEventArgs viene creato quando il SpeechRecognitionEngine oggetto genera relativo SpeechRecognitionEngine.LoadGrammarCompleted o il SpeechRecognizer genera dell'oggetto relativi LoadGrammarCompleted evento.An instance of LoadGrammarCompletedEventArgs is created when the SpeechRecognitionEngine object raises its SpeechRecognitionEngine.LoadGrammarCompleted or the SpeechRecognizer object raises its LoadGrammarCompleted event. Gli eventi vengono generati quando le chiamate al LoadGrammarAsync metodi completare.The events are raised when calls to the LoadGrammarAsync methods complete.

Per ottenere informazioni sul Grammar oggetto che è stata caricata, l'accesso di Grammar proprietà nel gestore dell'evento.To obtain information about the Grammar object that was loaded, access the Grammar property in the handler for the event.

Se il riconoscimento rileva un'eccezione durante l'operazione, il Error viene impostata per l'eccezione e il Loaded proprietà del controllo associato Grammar può essere false.If the recognizer encounters an exception during the operation, the Error property is set to the exception and the Loaded property of the associated Grammar may be false.

Proprietà

Cancelled Cancelled Cancelled Cancelled

Ottiene un valore che indica se un'operazione asincrona è stata annullata.Gets a value indicating whether an asynchronous operation has been canceled.

(Inherited from AsyncCompletedEventArgs)
Error Error Error Error

Ottiene un valore che indica l'errore verificatosi durante un'operazione asincrona.Gets a value indicating which error occurred during an asynchronous operation.

(Inherited from AsyncCompletedEventArgs)
Grammar Grammar Grammar Grammar

L'oggetto Grammar che ha terminato il caricamento.The Grammar object that has completed loading.

UserState UserState UserState UserState

Ottiene l’identificatore univoco per l'attività asincrona.Gets the unique identifier for the asynchronous task.

(Inherited from AsyncCompletedEventArgs)

Metodi

Equals(Object) Equals(Object) Equals(Object) Equals(Object)

Determina se l'oggetto specificato è uguale all'oggetto corrente.Determines whether the specified object is equal to the current object.

(Inherited from Object)
GetHashCode() GetHashCode() GetHashCode() GetHashCode()

Funge da funzione hash predefinita.Serves as the default hash function.

(Inherited from Object)
GetType() GetType() GetType() GetType()

Ottiene l'oggetto Type dell'istanza corrente.Gets the Type of the current instance.

(Inherited from Object)
MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

Crea una copia superficiale dell'oggetto Object corrente.Creates a shallow copy of the current Object.

(Inherited from Object)
RaiseExceptionIfNecessary() RaiseExceptionIfNecessary() RaiseExceptionIfNecessary() RaiseExceptionIfNecessary()

Genera un'eccezione fornita dall'utente in caso di errore in un'operazione asincrona.Raises a user-supplied exception if an asynchronous operation failed.

(Inherited from AsyncCompletedEventArgs)
ToString() ToString() ToString() ToString()

Restituisce una stringa che rappresenta l'oggetto corrente.Returns a string that represents the current object.

(Inherited from Object)

Si applica a

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