How to convert Text to Speech in C#

Steps :
=====

1. Add reference from .NET assembly named System.speech
2 Add code given below in .cs page of the form.

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;
using System.IO;
namespace WindowsFormsApplication2
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        SpeechSynthesizer reader; //declare the object
        private void Form1_Load(object sender, EventArgs e)
        {
            reader = new SpeechSynthesizer(); //create new object
         
            textBox1.ScrollBars = ScrollBars.Both;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            reader.Dispose();
            if (textBox1.Text != "")    //if text area is not empty
            {

                reader = new SpeechSynthesizer();
                reader.SpeakAsync(textBox1.Text);
              //  reader.SpeakCompleted += new EventHandler<SpeakCompletedEventArgs>(reader_SpeakCompleted);
            }
            else
            {
                MessageBox.Show("Please enter some text in the textbox", "Message", MessageBoxButtons.OK);
            }
        }

        //event handler
        void reader_SpeakCompleted(object sender, SpeakCompletedEventArgs e)
        {
            label1.Text = "IDLE";
        }
    }
}