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Grammar.SpeechRecognized Event

Raised when a speech recognizer performs recognition using the Grammar object.

Namespace:  System.Speech.Recognition
Assembly:  System.Speech (in System.Speech.dll)

public event EventHandler<SpeechRecognizedEventArgs> SpeechRecognized

The speech recognizer also raises a SpeechRecognized event when it recognizes input. The Grammar object's SpeechRecognized event is raised prior to the speech recognizer's SpeechRecognized event . For more information, see the SpeechRecognizer.SpeechRecognized, SpeechRecognitionEngine.SpeechRecognized, and RecognizeCompleted events.

Any tasks specific to a particular grammar should always be handled by handlers for the Grammar object's SpeechRecognized event.

The following example shows the use of an event handler for the Grammar object's SpeechRecognized event. It outputs the recognition results to the console.

public partial class Form1 : Form
{
  SpeechRecognitionEngine sre;

  public Form1()
  {
  InitializeComponent();

  // Create an in-process speech recognizer.
  sre = new SpeechRecognitionEngine();

  // Configure input to the speech recognizer.
  sre.SetInputToDefaultAudioDevice();

  // Create a simple grammar and load it.
  Grammar testGrammar = new Grammar(new GrammarBuilder("testing"));
  sre.LoadGrammarAsync(testGrammar);

  // Add a handler for the grammar's speech recognized event.
  testGrammar.SpeechRecognized += new EventHandler<SpeechRecognizedEventArgs>(testGrammar_SpeechRecognized);

  // Start asynchronous speech recognition.
  sre.RecognizeAsync();
  }

  // Handle the grammar's SpeechRecognized event, output the recognized text.
  void testGrammar_SpeechRecognized(object sender, SpeechRecognizedEventArgs e)
  {
    Console.WriteLine("Recognized text: " + e.Result.Text);
  }
}

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4
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