RecognizeCompletedEventArgs Klass

Definition

public ref class RecognizeCompletedEventArgs : System::ComponentModel::AsyncCompletedEventArgs

public class RecognizeCompletedEventArgs : System.ComponentModel.AsyncCompletedEventArgs

type RecognizeCompletedEventArgs = class
    inherit AsyncCompletedEventArgs

Public Class RecognizeCompletedEventArgs
Inherits AsyncCompletedEventArgs

Arv

Object

EventArgs

AsyncCompletedEventArgs

RecognizeCompletedEventArgs

Exempel

I följande exempel utförs asynkron taligenkänning på en grammatik för SpeechRecognitionEngine.RecognizeAsync taligenkänning med hjälp av metoden med den processbaserade identifieraren. Exemplet använder Choices och GrammarBuilder objekt för att skapa taligenkänningens grammatik innan du skapar den till ett Grammar objekt. En hanterare för SpeechRecognitionEngine.RecognizeCompleted händelsen matar ut information om igenkänningsåtgärden till konsolen.

using System;
using System.Speech.Recognition;

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

      // Initialize a SpeechRecognitionEngine object and set its input.
      recognizer = new SpeechRecognitionEngine(new System.Globalization.CultureInfo("en-US"));
      recognizer.SetInputToDefaultAudioDevice();

      // Configure recognition parameters.
      recognizer.InitialSilenceTimeout = TimeSpan.FromSeconds(5.0);
      recognizer.BabbleTimeout = TimeSpan.FromSeconds(3.0);
      recognizer.EndSilenceTimeout = TimeSpan.FromSeconds(1.0);
      recognizer.EndSilenceTimeoutAmbiguous = TimeSpan.FromSeconds(1.0);

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

      // Add a handler for the RecognizeCompleted event.
      recognizer.RecognizeCompleted +=
        new EventHandler<RecognizeCompletedEventArgs>(recognizer_RecognizeCompleted);

      // Create a speech recognition grammar and build it into a Grammar object.
      Choices bankingMenu = new Choices(new string[]
      { "Access accounts", "Transfer funds", "Pay bills", "Get loan balance" });
      GrammarBuilder banking = new GrammarBuilder(bankingMenu);
      Grammar bankGrammar = new Grammar(banking);
      bankGrammar.Name = "Banking Menu";

      // Load the Grammar objects to the recognizer.
      recognizer.LoadGrammarAsync(bankGrammar);

      // Start asynchronous, continuous recognition.
      recognizer.RecognizeAsync();

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

    // Handle the RecognizeCompleted event.
    static void recognizer_RecognizeCompleted(object sender, RecognizeCompletedEventArgs e)
    {
      if (e.Error != null)
      {
        Console.WriteLine(
          "RecognizeCompleted, error occurred during recognition: {0}", e.Error);
        return;
      }

      if (e.InitialSilenceTimeout || e.BabbleTimeout)
      {
        Console.WriteLine(
          "RecognizeCompleted: BabbleTimeout({0}), InitialSilenceTimeout({1}).",
          e.BabbleTimeout, e.InitialSilenceTimeout);
        return;
      }

      if (e.InputStreamEnded)
      {
        Console.WriteLine(
          "RecognizeCompleted: AudioPosition({0}), InputStreamEnded({1}).",
          e.AudioPosition, e.InputStreamEnded);
      }

      if (e.Result != null)
      {
        Console.WriteLine(
          "RecognizeCompleted: Grammar ({0}), Text ({1}), Confidence ({2}), AudioPosition ({3}).",
          e.Result.Grammar.Name, e.Result.Text, e.Result.Confidence, e.AudioPosition);
      }

      else
      {
        Console.WriteLine("RecognizeCompleted: No result.");
      }

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

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

      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 and {2} enabled.", grammarName,
        (grammarLoaded) ? "is" : "is not", (grammarEnabled) ? "is" : "is not");
    }
  }
}

Kommentarer

En instans av RecognizeCompleted skapas när SpeechRecognitionEngine eller SpeechRecognizer objektet genererar sin SpeechRecognized händelse när en RecognizeAsync åtgärd har slutförts. Mer information om taligenkänningshändelser finns i Använda taligenkänningshändelser.

Se även

• SpeechRecognitionEngine
• RecognizeCompleted
• RecognizeAsync()
• EmulateRecognizeCompletedEventArgs