MainWindow.xaml.cs

public void DoWork()
{
	var tmpfile = SaveImageCapture((BitmapSource)player.Source);                    
	var emotions = await MakeRequest(tmpfile);

	if (emotions == null ||
		!emotions.Any())
	{
		txtNoFaces.Text = $"Detected faces: none";
		return;
	}

	foreach (var eScores in emotions.Select(e => e.Scores))
	{
		var data = new Data
		{
			Date = DateTime.Now,
			Anger = eScores.Anger,
			Contempt = eScores.Contempt,
			Disgust = eScores.Disgust,
			Fear = eScores.Fear,
			Happiness = eScores.Happiness,
			Neutral = eScores.Neutral,
			Sadness = eScores.Sadness,
			Surprise = eScores.Surprise
		};

		_sharedViewModel.List.Add(data);
		_sharedViewModel.UpdateAverageEmotions(eScores);
	}
}

public static string SaveImageCapture(BitmapSource bitmap)
{
	var file = Path.GetTempFileName();
	var encoder = new JpegBitmapEncoder();
	encoder.Frames.Add(BitmapFrame.Create(bitmap));
	encoder.QualityLevel = 80;
	// Save Image
	var fstream = new FileStream(file, FileMode.Create);
	encoder.Save(fstream);
	fstream.Close();
	TempFiles.Add(file);
	return file;
}

private static async Task<Emotion[]> MakeRequest(string image)
{
	var emotionServiceClient = new EmotionServiceClient(<INSERT YOUR KEY HERE>);

	try
	{
		using (Stream imageFileStream = File.OpenRead(image))
		{
			//
			// Detect the emotions in the URL
			//
			return await emotionServiceClient.RecognizeAsync(imageFileStream);
		}
	}
	catch (Exception ex)
	{
		return null;
	}
}