RecognitionEventArgs Class

RecognitionEventArgs derives from [System.EventArgs].

Event handlers obtain detailed information about a speech recognition through the Result property of each derived class.

This class is the base class for:

• SpeechRecognizedEventArgs , which is passed to the SpeechRecognized handler when an engine determines it has recognized a phrase.

• SpeechRecognitionRejected , which is passed to the SpeechRecognitionRejected handler when an engine cannot recognize a phrase.

• SpeechHypothesizedEventArgs , which is passed to the SpeechHypothesized() event handler when an engine has developed a tentative recognition hypothesis for a phrase.

In the example below, delegates are defined to handle SpeechHypothesized, SpeechRecognized and SpeechRecognitionRejected events which pass instances of the appropriate derived event argument class to a display routine accepting instances of RecognitionEventArgs.

// Handles the SpeechHypothesized event and displays the hypothesized result.
            _recognizer.SpeechHypothesized +=
                delegate(object sender, SpeechHypothesizedEventArgs eventArgs)
                {
                    DisplayResult(eventArgs);
                };

// Handles the SpeechRecognitionRejected event and displays the rejected result.
            _recognizer.SpeechRecognitionRejected +=
                delegate(object sender, SpeechRecognitionRejectedEventArgs eventArgs)
                {
                    DisplayResult(eventArgs);
                };
            
// Handles the SpeechRecognized event and displays the recognized result.
            _recognizer.SpeechRecognized +=
                delegate(object sender, SpeechRecognizedEventArgs eventArgs)
                {
                    DisplayResult(eventArgs);
                };

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

.NET Framework

Reference