PhonemeReachedEventArgs Class

public class PhonemeReachedEventArgs : PromptEventArgs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Speech.Synthesis;

namespace PhonemeReached
{
  public partial class Form1 : Form
  {
    
    public Form1()
    {
      InitializeComponent();
      textBox1.Text = "";
    }
    
    public void button1_Click(object sender, EventArgs e)
    {
      // Initialize a new instance of the SpeechSynthesizer.
      SpeechSynthesizer synth = new SpeechSynthesizer();

      // Configure the audio output. 
      synth.SetOutputToDefaultAudioDevice();

      // Register for the PhonemeReached event.
      synth.PhonemeReached += new EventHandler<PhonemeReachedEventArgs>(synth_PhonemeReached);

      // Speak the contents of a string.
      synth.Speak("Theme");
    }
    
    // Write information about each phoneme as it is reached.
    private void synth_PhonemeReached(object sender, PhonemeReachedEventArgs e)
    {textBox1.AppendText(string.Format(

        "  Phoneme reached summary:" + Environment.NewLine +
        "    Phoneme:                 {0}" + Environment.NewLine +  
        "    Audio Position:         {1} mSec" + Environment.NewLine +
        "    Duration:                  {2} mSec" + Environment.NewLine +
        "    Emphasis:                {3}" + Environment.NewLine +
        "    Next Phoneme:         {4}" + Environment.NewLine + Environment.NewLine, 
        e.Phoneme,
        e.AudioPosition,
        e.Duration,
        e.Emphasis,
        e.NextPhoneme));
    }
  }
}