How to add Voice to your .Net Application

Here is simple application which makes use of COM Library and 

with some lines of code you can give any application a voice. 

This example and the application explain three concepts. 

1. Adding COM references to your Project.

2. Declaring and using relevant object.

3. Adding voice responses as your application.

 

1. Adding COM references to your Project. 

Open a new windows form application and add Textbox and Button. To add link the relevant reference follow these steps 

Right click your project node in solution explorer in which you want to add reference --> click Add Reference 

In the Add Reference explorer window select the COM component from the COM tab or use browse option if you want to add specific dll from another resource.  For this example you can add sapi.dll following path below 

%windows%/System32/Speech/Common/sapi.dll

you may copy this dll into your bin folder which makes it easy to reference and some times it is feasable to provide dll with your installation package as your windows might lack it. 

2. Declaring and using relevant object. 

    // add this reference to your assembly

    using SpeechLib; 

    // Declare object in the class

    SpVoice spVoice; 

    Use a button and add following code behind its OnClick Event 

    // textToSpeak = any string you want to listen

    spvoice.Speak(textToSpeak,   SpeechLib.SpeechVoiceSpeakFlags.SVSFDefault); 

3. Adding voice responses as your application. 

     You can add any voice play back at any of the biultin events as follows 

     // Speak when application starts

    private void Pronouncer_Shown(object sender, EventArgs e)  

       {

     spvoice.Speak("Hello and Welcome To the   English Pronouncing application",              SpeechLib.SpeechVoiceSpeakFlags.SVSFDefault);

       } 

     // Speak when application Closes

    private void Form_FormClosing(object sender, FormClosingEventArgs e)  

     {

    spvoice.Speak("Thank you for using Application, goodbye",       SpeechLib.SpeechVoiceSpeakFlags.SVSFDefault);                                             

     }

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