Application throws InvalidOperationException?

Question

Speech recognition

Hello, when trying to recognize speech, an InvalidOperationException is thrown.
Code:

public class SpeechEngine : IDisposable
    {
        public string RecognizedText;
        Windows.Media.SpeechRecognition.SpeechRecognizer speechRecognizer;
        Windows.Media.SpeechRecognition.SpeechRecognitionResult speechRecognitionResult;
        public SpeechEngine()
        {
            speechRecognizer = new Windows.Media.SpeechRecognition.SpeechRecognizer();
        }
        public async void StartRecognizing()
        {
            await speechRecognizer.CompileConstraintsAsync();

            speechRecognitionResult = await speechRecognizer.RecognizeAsync();
        }
        public async void StopRecognizing()
        {
            await speechRecognizer.StopRecognitionAsync();

            RecognizedText = speechRecognitionResult.Text;
        }

        public void Dispose()
        {
            speechRecognizer.Dispose();
        }
    }

The manifest has permission to use the microphone. UWP Project

Answer 1

So I opened the article and there the first thing they do is capture the microphone, but you don’t.