Text to Speech Converter in C#

In this article, we will learn how to create a Text to Speech Converter in a C# Windows Forms application using the SpeechSynthesizer class.

Let's Begin

Step 1

Create a new project then select Windows Forms application in C# and give it a name.



Step 2

Drop a RichTextBox and four Button Controls from the ToolBox.



Step 3

Right-click on the References Folder then click on Add Reference.



Step 4

Select the System.Speech Assembly and click on OK.



After adding it, you will see System.Speech assembly under the References folder.



Step 5

Go to Form1.cs (code behind .cs file) and add System.Speech (the System.Speech namespace contains types that support speech recognition) and System.Speech.Synthesis namespace (the System.Speech.Synthesis namespace contains classes for initializing and configuring a speech synthesis engine and for generating speech and so on).

using System;
using System.Windows.Forms;
using System.Speech;
using System.Speech.Synthesis;

namespace TextToSpeechConverter
{
   public partial class Form1 : Form
   {
      public Form1()
      {
         InitializeComponent();
      }
      //SpeechSynthesizer Class Provides access to the functionality of an installed a speech synthesis engine.
      SpeechSynthesizer speechSynthesizerObj;
      private void Form1_Load(object sender, EventArgs e)
      {
         speechSynthesizerObj = new SpeechSynthesizer();
         btn_Resume.Enabled = false;
         btn_Pause.Enabled = false;
         btn_Stop.Enabled = false;
      }


      private void btn_Speak_Click(object sender, EventArgs e)
      {
         //Disposes the SpeechSynthesizer object
         speechSynthesizerObj.Dispose();
         if(richTextBox1.Text!="")
         {
            speechSynthesizerObj = new SpeechSynthesizer();
            //Asynchronously speaks the contents present in RichTextBox1
            speechSynthesizerObj.SpeakAsync(richTextBox1.Text);
            btn_Pause.Enabled = true;
            btn_Stop.Enabled = true;
         }
      }

      private void btn_Pause_Click(object sender, EventArgs e)
      {
         if(speechSynthesizerObj!=null)
         {
            //Gets the current speaking state of the SpeechSynthesizer object.
            if(speechSynthesizerObj.State==SynthesizerState.Speaking)
            {
               //Pauses the SpeechSynthesizer object.
               speechSynthesizerObj.Pause();
               btn_Resume.Enabled = true;
               btn_Speak.Enabled = false;
            }
         }
      }

      private void btn_Resume_Click(object sender, EventArgs e)
      {
         if (speechSynthesizerObj != null)
         {
            if (speechSynthesizerObj.State == SynthesizerState.Paused)
            {
               //Resumes the SpeechSynthesizer object after it has been paused.
               speechSynthesizerObj.Resume();
               btn_Resume.Enabled = false;
               btn_Speak.Enabled = true;
            }
         }
      }

      private void btn_Stop_Click(object sender, EventArgs e)
      {
         if(speechSynthesizerObj!=null)
         {
            //Disposes the SpeechSynthesizer object
            speechSynthesizerObj.Dispose();
            btn_Speak.Enabled = true;
            btn_Resume.Enabled = false;
            btn_Pause.Enabled = false;
            btn_Stop.Enabled = false;
         }
      }
   }
}

Final Preview



I hope you like this. Thanks.