SpeechSynthesizer & SpeechRecognizer

Am enhancing en existing web application which makes the visually impaired people, to be used based on the Text to Speech & Speech Recognition

The same code is working fine in windows application, but not in web application.

If I put break point, it's coming to the point but the code is not getting execute.

Here is the code, please do the needful.




     using System.Speech;  
     using System.Speech.Synthesis;  
     using System.Threading;  
     using System.Speech.Recognition;  
       
       
       
      SpeechSynthesizer ss = new SpeechSynthesizer();  
         PromptBuilder pb = new PromptBuilder();  
         SpeechRecognitionEngine sre = new SpeechRecognitionEngine();   
         SpeechRecognizer sr = new SpeechRecognizer();  
       
        protected void btn_Spk_Click(object sender, EventArgs e)      
         {  
             string optiona, optionb, optionc;  
             Choices clist = new Choices();  
             foreach (GridViewRow row in gvtemperament.Rows)  
             {  
                 RadioButton rblist1 = ((RadioButton)row.FindControl("rdTemp_Opt1"));  
                 RadioButton rblist2 = ((RadioButton)row.FindControl("rdTemp_Opt2"));  
                 RadioButton rblist3 = ((RadioButton)row.FindControl("rdTemp_Opt3"));  
                 Label lbl1 = (Label)row.FindControl("lbl_desc");  
                 if (row.Cells[0].Text == "1")  
                 {  
                     ss.SelectVoiceByHints(VoiceGender.Female);  
                     ss.Volume = 100;  
                     ss.Rate = -3;  
                     pb.ClearContent();  
                     pb.AppendText("Please answer all the Questions and you starts here!");  
                     ss.Speak(pb);  
                     Thread.Sleep(1500);  
       
                     pb.ClearContent();  
                     pb.AppendText(lbl1.Text);  
                     ss.Speak(pb);  
                     Thread.Sleep(1500);  
       
                     ss.SelectVoiceByHints(VoiceGender.Male);  
                     pb.ClearContent();  
                     pb.AppendText("Options are ");  
                     ss.Speak(pb);  
       
                     optiona = rblist1.Text;  
                     optionb = rblist2.Text;  
                     optionc = "Not Sure";  
       
                       
                     pb.ClearContent();  
                     pb.AppendText(optiona);  
                     ss.Speak(pb);  
                     Thread.Sleep(700);  
       
                     pb.ClearContent();  
                     pb.AppendText(optionb);  
                     ss.Speak(pb);  
                     Thread.Sleep(700);  
       
                     pb.ClearContent();  
                     pb.AppendText(optionc);  
                     ss.Speak(pb);  
       
                     Thread.Sleep(150);  
       
                     clist.Add(new string[] { "Yes", "No", "Not Sure" });  
                     Grammar gr = new Grammar(new GrammarBuilder(clist));  
                     try  
                     {  
                         sre.RequestRecognizerUpdate();  
                         sre.LoadGrammar(gr);  
                         sre.SpeechRecognized += sre_SpeechRecognized;  
                         sre.SetInputToDefaultAudioDevice();  
                         sre.RecognizeAsync(RecognizeMode.Multiple);  
                     }  
                     catch (Exception ex)  
                     {  
                          this.ClientScript.RegisterStartupScript(this.GetType(), "alert", "" + "alert('Error');");  
                     }  
                 }  
                 else if (row.Cells[0].Text == "2")  
                 {  
                     ss.SelectVoiceByHints(VoiceGender.Female);  
                     ss.Volume = 100;  
                     ss.Rate = -3;  
       
                     pb.ClearContent();  
                     pb.AppendText(lbl1.Text);  
                     ss.Speak(pb);  
                     Thread.Sleep(1500);  
       
                     ss.SelectVoiceByHints(VoiceGender.Male);  
                     pb.ClearContent();  
                     pb.AppendText("Options are ");  
                     ss.Speak(pb);  
       
                     optiona = rblist1.Text;  
                     optionb = rblist2.Text;  
                     optionc = "Not Sure";  
       
        
                     pb.ClearContent();  
                     pb.AppendText(optiona);  
                     ss.Speak(pb);  
                     Thread.Sleep(700);  
       
                     pb.ClearContent();  
                     pb.AppendText(optionb);  
                     ss.Speak(pb);  
                     Thread.Sleep(700);  
        
                     pb.ClearContent();  
                     pb.AppendText(optionc);  
                     ss.Speak(pb);  
       
                     Thread.Sleep(150);  
                     clist.Add(new string[] { "Yes", "No", "Not Sure" });  
                     Grammar gr = new Grammar(new GrammarBuilder(clist));  
                     try  
                     {  
                         sre.RequestRecognizerUpdate();  
                         sre.LoadGrammar(gr);  
                         sre.SpeechRecognized += sre_SpeechRecognized;  
                         sre.SetInputToDefaultAudioDevice();  
                         sre.RecognizeAsync(RecognizeMode.Multiple);  
                     }  
                     catch (Exception ex)  
                     {  
                          this.ClientScript.RegisterStartupScript(this.GetType(), "alert", "" + "alert('Error');");  
                     }  
                 }  
                 else if (row.Cells[0].Text == "3")  
                 {  
                     ss.SelectVoiceByHints(VoiceGender.Female);  
                     ss.Volume = 100;  
                     ss.Rate = -3;  
       
                     pb.ClearContent();  
                     pb.AppendText(lbl1.Text);  
                     ss.Speak(pb);  
                     Thread.Sleep(1500);  
       
                     ss.SelectVoiceByHints(VoiceGender.Male);  
                     pb.ClearContent();  
                     pb.AppendText("Options are ");  
                     ss.Speak(pb);  
       
                     optiona = rblist1.Text;  
                     optionb = rblist2.Text;  
                     optionc = "Not Sure";  
                                                                  
                     pb.ClearContent();  
                     pb.AppendText(optiona);  
                     ss.Speak(pb);  
                     Thread.Sleep(700);  
       
                     pb.ClearContent();  
                     pb.AppendText(optionb);  
                     ss.Speak(pb);  
                     Thread.Sleep(700);  
       
                     pb.ClearContent();  
                     pb.AppendText(optionc);  
                     ss.Speak(pb);  
                     Thread.Sleep(150);  
                     clist.Add(new string[] { "Yes", "No", "Not Sure" });  
                     Grammar gr = new Grammar(new GrammarBuilder(clist));  
                     try  
                     {  
                         sre.RequestRecognizerUpdate();  
                         sre.LoadGrammar(gr);  
                         sre.SpeechRecognized += sre_SpeechRecognized;  
                         sre.SetInputToDefaultAudioDevice();  
                         sre.RecognizeAsync(RecognizeMode.Multiple);  
                     }  
                     catch (Exception ex)  
                     {  
                           this.ClientScript.RegisterStartupScript(this.GetType(), "alert", "" + "alert('Error');");  
                     }  
                 }  
                 else if (row.Cells[0].Text == "4")  
                 {  
                     ss.SelectVoiceByHints(VoiceGender.Female);  
                     ss.Volume = 100;  
                     ss.Rate = -3;  
       
                     pb.ClearContent();  
                     pb.AppendText(lbl1.Text);  
                     ss.Speak(pb);  
                     Thread.Sleep(1500);  
       
                     ss.SelectVoiceByHints(VoiceGender.Male);  
                     pb.ClearContent();  
                     pb.AppendText("Options are ");  
                     ss.Speak(pb);  
       
                     optiona = rblist1.Text;  
                     optionb = rblist2.Text;  
                     optionc = "Not Sure";  
                                            
                     pb.ClearContent();  
                     pb.AppendText(optiona);  
                     ss.Speak(pb);  
                     Thread.Sleep(700);  
       
                     pb.ClearContent();  
                     pb.AppendText(optionb);  
                     ss.Speak(pb);  
                     Thread.Sleep(700);  
       
                     pb.ClearContent();  
                     pb.AppendText(optionc);  
                     ss.Speak(pb);  
                     Thread.Sleep(150);  
                     clist.Add(new string[] { "Yes", "No", "Not Sure" });  
                     Grammar gr = new Grammar(new GrammarBuilder(clist));  
                     try  
                     {  
                         sre.RequestRecognizerUpdate();  
                         sre.LoadGrammar(gr);  
                         sre.SpeechRecognized += sre_SpeechRecognized;  
                         sre.SetInputToDefaultAudioDevice();  
                         sre.RecognizeAsync(RecognizeMode.Multiple);  
                     }  
                     catch (Exception ex)  
                     {  
                         this.ClientScript.RegisterStartupScript(this.GetType(), "alert", "" + "alert('Error');");  
                     }  
                 }  
                 else if (row.Cells[0].Text == "5")  
                 {  
                     ss.SelectVoiceByHints(VoiceGender.Female);  
                     ss.Volume = 100;  
                     ss.Rate = -3;  
                     pb.ClearContent();  
                     pb.AppendText(lbl1.Text);  
                     ss.Speak(pb);  
                     Thread.Sleep(1500);  
       
                     ss.SelectVoiceByHints(VoiceGender.Male);  
                     pb.ClearContent();  
                     pb.AppendText("Options are ");  
                     ss.Speak(pb);  
       
                     optiona = rblist1.Text;  
                     optionb = rblist2.Text;  
                     optionc = "Not Sure";  
       
                     pb.ClearContent();  
                     pb.AppendText(optiona);  
                     ss.Speak(pb);  
                     Thread.Sleep(700);  
       
                     pb.ClearContent();  
                     pb.AppendText(optionb);  
                     ss.Speak(pb);  
                     Thread.Sleep(700);  
       
                     pb.ClearContent();  
                     pb.AppendText(optionc);  
                     ss.Speak(pb);  
                     Thread.Sleep(150);  
                     clist.Add(new string[] { "Yes", "No", "Not Sure" });  
                     Grammar gr = new Grammar(new GrammarBuilder(clist));  
                     try  
                     {  
                         sre.RequestRecognizerUpdate();  
                         sre.LoadGrammar(gr);  
                         sre.SpeechRecognized += sre_SpeechRecognized;  
                         sre.SetInputToDefaultAudioDevice();  
                         sre.RecognizeAsync(RecognizeMode.Multiple);  
                     }  
                     catch (Exception ex)  
                     {  
                          this.ClientScript.RegisterStartupScript(this.GetType(), "alert", "" + "alert('Error');");  
                     }  
                 }  
                 else if (row.Cells[0].Text == "6")  
                 {  
                     ss.SelectVoiceByHints(VoiceGender.Female);  
                     ss.Volume = 100;  
                     ss.Rate = -3;  
                     pb.ClearContent();  
                     pb.AppendText(lbl1.Text);  
                     ss.Speak(pb);  
                     Thread.Sleep(1500);  
       
                     ss.SelectVoiceByHints(VoiceGender.Male);  
                     pb.ClearContent();  
                     pb.AppendText("Options are ");  
                     ss.Speak(pb);  
       
                     optiona = rblist1.Text;  
                     optionb = rblist2.Text;  
                     optionc = "Not Sure";  
       
                     pb.ClearContent();  
                     pb.AppendText(optiona);  
                     ss.Speak(pb);  
                     Thread.Sleep(700);  
       
                     pb.ClearContent();  
                     pb.AppendText(optionb);  
                     ss.Speak(pb);  
                     Thread.Sleep(700);  
       
                     pb.ClearContent();  
                     pb.AppendText(optionc);  
                     ss.Speak(pb);  
                     Thread.Sleep(150);  
                     clist.Add(new string[] { "Yes", "No", "Not Sure" });  
                     Grammar gr = new Grammar(new GrammarBuilder(clist));  
                     try  
                     {  
                         sre.RequestRecognizerUpdate();  
                         sre.LoadGrammar(gr);  
                         sre.SpeechRecognized += sre_SpeechRecognized;  
                         sre.SetInputToDefaultAudioDevice();  
                         sre.RecognizeAsync(RecognizeMode.Multiple);  
                     }  
                     catch (Exception ex)  
                     {  
                          this.ClientScript.RegisterStartupScript(this.GetType(), "alert", "" + "alert('Error');");  
                     }  
                 }  
                 else if (row.Cells[0].Text == "7")  
                 {  
                     ss.SelectVoiceByHints(VoiceGender.Female);  
                     ss.Volume = 100;  
                     ss.Rate = -3;  
                     pb.ClearContent();  
                     pb.AppendText(lbl1.Text);  
                     ss.Speak(pb);  
                     Thread.Sleep(1500);  
       
                     ss.SelectVoiceByHints(VoiceGender.Male);  
                     pb.ClearContent();  
                     pb.AppendText("Options are ");  
                     ss.Speak(pb);  
       
                     optiona = rblist1.Text;  
                     optionb = rblist2.Text;  
                     optionc = "Not Sure";  
       
                     pb.ClearContent();  
                     pb.AppendText(optiona);  
                     ss.Speak(pb);  
                     Thread.Sleep(700);  
       
                     pb.ClearContent();  
                     pb.AppendText(optionb);  
                     ss.Speak(pb);  
                     Thread.Sleep(700);  
       
                     pb.ClearContent();  
                     pb.AppendText(optionc);  
                     ss.Speak(pb);  
                     Thread.Sleep(150);  
                     clist.Add(new string[] { "Yes", "No", "Not Sure" });  
                     Grammar gr = new Grammar(new GrammarBuilder(clist));  
                     try  
                     {  
                         sre.RequestRecognizerUpdate();  
                         sre.LoadGrammar(gr);  
                         sre.SpeechRecognized += sre_SpeechRecognized;  
                         sre.SetInputToDefaultAudioDevice();  
                         sre.RecognizeAsync(RecognizeMode.Multiple);  
                     }  
                     catch (Exception ex)  
                     {  
                          this.ClientScript.RegisterStartupScript(this.GetType(), "alert", "" + "alert('Error');");  
                     }  
                 }  
                 else if (row.Cells[0].Text == "8")  
                 {  
                     ss.SelectVoiceByHints(VoiceGender.Female);  
                     ss.Volume = 100;  
                     ss.Rate = -3;  
                     pb.ClearContent();  
                     pb.AppendText(lbl1.Text);  
                     ss.Speak(pb);  
                     Thread.Sleep(1500);  
       
                     ss.SelectVoiceByHints(VoiceGender.Male);  
                     pb.ClearContent();  
                     pb.AppendText("Options are ");  
                     ss.Speak(pb);  
       
                     optiona = rblist1.Text;  
                     optionb = rblist2.Text;  
                     optionc = "Not Sure";  
       
                     pb.ClearContent();  
                     pb.AppendText(optiona);  
                     ss.Speak(pb);  
                     Thread.Sleep(700);  
       
                     pb.ClearContent();  
                     pb.AppendText(optionb);  
                     ss.Speak(pb);  
                     Thread.Sleep(700);  
       
                     pb.ClearContent();  
                     pb.AppendText(optionc);  
                     ss.Speak(pb);  
                     Thread.Sleep(150);  
                     clist.Add(new string[] { "Yes", "No", "Not Sure" });  
                     Grammar gr = new Grammar(new GrammarBuilder(clist));  
                     try  
                     {  
                         sre.RequestRecognizerUpdate();  
                         sre.LoadGrammar(gr);  
                         sre.SpeechRecognized += sre_SpeechRecognized;  
                         sre.SetInputToDefaultAudioDevice();  
                         sre.RecognizeAsync(RecognizeMode.Multiple);  
                     }  
                     catch (Exception ex)  
                     {  
                           this.ClientScript.RegisterStartupScript(this.GetType(), "alert", "" + "alert('Error');");  
                     }  
                 }  
                 else if (row.Cells[0].Text == "9")  
                 {  
                     ss.SelectVoiceByHints(VoiceGender.Female);  
                     ss.Volume = 100;  
                     ss.Rate = -3;  
                     pb.ClearContent();  
                     pb.AppendText(lbl1.Text);  
                     ss.Speak(pb);  
                     Thread.Sleep(1500);  
       
                     ss.SelectVoiceByHints(VoiceGender.Male);  
                     pb.ClearContent();  
                     pb.AppendText("Options are ");  
                     ss.Speak(pb);  
       
                     optiona = rblist1.Text;  
                     optionb = rblist2.Text;  
                     optionc = "Not Sure";  
       
                     pb.ClearContent();  
                     pb.AppendText(optiona);  
                     ss.Speak(pb);  
                     Thread.Sleep(700);  
       
                     pb.ClearContent();  
                     pb.AppendText(optionb);  
                     ss.Speak(pb);  
                     Thread.Sleep(700);  
       
                     pb.ClearContent();  
                     pb.AppendText(optionc);  
                     ss.Speak(pb);  
                     Thread.Sleep(150);  
                     clist.Add(new string[] { "Yes", "No", "Not Sure" });  
                     Grammar gr = new Grammar(new GrammarBuilder(clist));  
                     try  
                     {  
                         sre.RequestRecognizerUpdate();  
                         sre.LoadGrammar(gr);  
                         sre.SpeechRecognized += sre_SpeechRecognized;  
                         sre.SetInputToDefaultAudioDevice();  
                         sre.RecognizeAsync(RecognizeMode.Multiple);  
                     }  
                     catch (Exception ex)  
                     {  
                          this.ClientScript.RegisterStartupScript(this.GetType(), "alert", "" + "alert('Error');");  
                     }  
                 }  
                 else if (row.Cells[0].Text == "10")  
                 {  
                     ss.SelectVoiceByHints(VoiceGender.Female);  
                     ss.Volume = 100;  
                     ss.Rate = -3;  
                     pb.ClearContent();  
                     pb.AppendText(lbl1.Text);  
                     ss.Speak(pb);  
                     Thread.Sleep(1500);  
       
                     ss.SelectVoiceByHints(VoiceGender.Male);  
                     pb.ClearContent();  
                     pb.AppendText("Options are ");  
                     ss.Speak(pb);  
       
                     optiona = rblist1.Text;  
                     optionb = rblist2.Text;  
                     optionc = "Not Sure";  
       
                     pb.ClearContent();  
                     pb.AppendText(optiona);  
                     ss.Speak(pb);  
                     Thread.Sleep(700);  
       
                     pb.ClearContent();  
                     pb.AppendText(optionb);  
                     ss.Speak(pb);  
                     Thread.Sleep(700);  
       
                     pb.ClearContent();  
                     pb.AppendText(optionc);  
                     ss.Speak(pb);  
                     Thread.Sleep(150);  
                     clist.Add(new string[] { "Yes", "No", "Not Sure" });  
                     Grammar gr = new Grammar(new GrammarBuilder(clist));  
                     try  
                     {  
                         sre.RequestRecognizerUpdate();  
                         sre.LoadGrammar(gr);  
                         sre.SpeechRecognized += sre_SpeechRecognized;  
                         sre.SetInputToDefaultAudioDevice();  
                         sre.RecognizeAsync(RecognizeMode.Multiple);  
                     }  
                     catch (Exception ex)  
                     {  
                         this.ClientScript.RegisterStartupScript(this.GetType(), "alert", "" + "alert('Error');");  
                     }  
                 }  
             }  
         }  
       
       void sre_SpeechRecognized(object sender, SpeechRecognizedEventArgs e)  
       {  
             foreach (GridViewRow row in gvtemperament.Rows)  
             {  
                 RadioButton rblist1 = ((RadioButton)row.FindControl("rdTemp_Opt1"));  
                 RadioButton rblist2 = ((RadioButton)row.FindControl("rdTemp_Opt2"));  
                 RadioButton rblist3 = ((RadioButton)row.FindControl("rdTemp_Opt3"));  
                 Label lbl1 = (Label)row.FindControl("lbl_desc");  
       
                 if (row.Cells[0].Text == "1")  
                 {  
                     if (e.Result.Text == "Yes")  
                     {                       
                         rblist1.Checked = true;  
                         rblist1.Text = "Narendran";  
                     }  
                     else if (e.Result.Text == "No")  
                     {  
                         rblist2.Checked = true;  
                             rblist1.Text = "Naren";  
                     }  
                     else //if (e.Result.Text == "Not Sure")  
                     {  
                         rblist3.Checked = true;  
                         rblist1.Text = "Chk";  
                     }  
                 }  
                 else if (row.Cells[0].Text == "2")  
                 {  
                     if (e.Result.Text == "Yes")  
                     {  
                         rblist1.Checked = true;  
                         rblist1.Text = "Round2";  
                     }  
                     else if (e.Result.Text == "No")  
                     {  
                         rblist2.Checked = true;  
                         rblist2.Text = "Round2";  
                     }  
                     else //if (e.Result.Text == "Not Sure")  
                     {  
                         rblist3.Checked = true;   
                         rblist3.Text = "Round2";  
                     }  
                 }  
       
                 else if (row.Cells[0].Text == "3")  
                 {  
                     if (e.Result.Text == "Yes")  
                     {  
                         rblist1.Checked = true;  
                     }  
                     else if (e.Result.Text == "No")  
                     {  
                         rblist2.Checked = true;  
                     }  
                     else //if (e.Result.Text == "Not Sure")  
                     {  
                         rblist3.Checked = true;  
                     }  
                 }  
       
                 else if (row.Cells[0].Text == "4")  
                 {  
                     if (e.Result.Text == "Yes")  
                     {  
                         rblist1.Checked = true;  
                     }  
                     else if (e.Result.Text == "No")  
                     {  
                         rblist2.Checked = true;  
                     }  
                     else //if (e.Result.Text == "Not Sure")  
                     {  
                         rblist3.Checked = true;  
                     }  
                 }  
       
                 else if (row.Cells[0].Text == "5")  
                 {  
                     if (e.Result.Text == "Yes")  
                     {  
                         rblist1.Checked = true;  
                     }  
                     else if (e.Result.Text == "No")  
                     {  
                         rblist2.Checked = true;  
                     }  
                     else //if (e.Result.Text == "Not Sure")  
                     {  
                         rblist3.Checked = true;  
                     }  
                 }  
       
                 else if (row.Cells[0].Text == "6")  
                 {  
                     if (e.Result.Text == "Yes")  
                     {  
                         rblist1.Checked = true;  
                     }  
                     else if (e.Result.Text == "No")  
                     {  
                         rblist2.Checked = true;  
                     }  
                     else //if (e.Result.Text == "Not Sure")  
                     {  
                         rblist3.Checked = true;  
                     }  
                 }  
                 else if (row.Cells[0].Text == "7")  
                 {  
                     if (e.Result.Text == "Yes")  
                     {  
                         rblist1.Checked = true;  
                     }  
                     else if (e.Result.Text == "No")  
                     {  
                         rblist2.Checked = true;  
                     }  
                     else //if (e.Result.Text == "Not Sure")  
                     {  
                         rblist3.Checked = true;  
                     }  
                 }  
       
                 else if (row.Cells[0].Text == "8")  
                 {  
                     if (e.Result.Text == "Yes")  
                     {  
                         rblist1.Checked = true;  
                     }  
                     else if (e.Result.Text == "No")  
                     {  
                         rblist2.Checked = true;  
                     }  
                     else //if (e.Result.Text == "Not Sure")  
                     {  
                         rblist3.Checked = true;  
                     }  
                 }  
       
                 else if (row.Cells[0].Text == "9")  
                 {  
                     if (e.Result.Text == "Yes")  
                     {  
                         rblist1.Checked = true;  
                     }  
                     else if (e.Result.Text == "No")  
                     {  
                         rblist2.Checked = true;  
                     }  
                     else //if (e.Result.Text == "Not Sure")  
                     {  
                         rblist3.Checked = true;  
                     }  
                 }  
       
                 else if (row.Cells[0].Text == "10")  
                 {  
                     if (e.Result.Text == "Yes")  
                     {  
                         rblist1.Checked = true;  
                     }  
                     else if (e.Result.Text == "No")  
                     {  
                         rblist2.Checked = true;  
                     }  
                     else //if (e.Result.Text == "Not Sure")  
                     {  
                         rblist3.Checked = true;  
                     }  
                 }  
                 else  
                 {  
       
                 }  
             }  
         }

Please do the needful.

Narendran Namachivayam.

2 Replies

Know the answer? Post it — somebody with the same question will find it here.

Narendran N10y ago
Thank U.

My code is working fine, now the thing is I need the same to be implemented for Tamil & Hindi Languages, am already having the texts in DB and bound in Gridview too, but couldn't read through SpeechSynthesizer.
Do I need to have the voice for those languages?

Narendran N10y ago

ss.SelectVoiceByHints(VoiceGender.Female);
                ss.Volume = 100;
                ss.Rate = -3;
                pb.ClearContent();
                pb.AppendText("Please answer all the Questions and you starts here!");
                ss.Speak(pb);
                Thread.Sleep(TimeSpan.FromMilliseconds(1000));
 
                pb.ClearContent();
                pb.AppendText(lbl1.Text);
                ss.Speak(pb);
                Thread.Sleep(TimeSpan.FromMilliseconds(1000));
 
                ss.SelectVoiceByHints(VoiceGender.Male);
                pb.ClearContent();
                pb.AppendText("Options are ");
                ss.Speak(pb);
 
                optiona = rblist1.Text;
                optionb = rblist2.Text;
                optionc = "Not Sure";
 
                pb.ClearContent();
                pb.AppendText(optiona);
                ss.Speak(pb);
                Thread.Sleep(TimeSpan.FromMilliseconds(700));
 
                pb.ClearContent();
                pb.AppendText(optionb);
                ss.Speak(pb);
                Thread.Sleep(TimeSpan.FromMilliseconds(700));
 
                pb.ClearContent();
                pb.AppendText(optionc);
                ss.Speak(pb);
 
 
                Choices clist = new Choices(new string[] { "Yes", "No", "Not Sure" });
 
                GrammarBuilder gb = new GrammarBuilder(); 
                gb.Append(clist); 
 
                // Construct a Grammar object and load it to the recognizer.
                Grammar gr = new Grammar(gb);   
                sre.LoadGrammarAsync(gr); 
                sre.SetInputToDefaultAudioDevice();
                sre.RequestRecognizerUpdate(); 
                
                sre.InitialSilenceTimeout = TimeSpan.FromSeconds(3);
                sre.BabbleTimeout = TimeSpan.FromMilliseconds(500);
                sre.EndSilenceTimeout = TimeSpan.FromSeconds(1);
                sre.EndSilenceTimeoutAmbiguous = TimeSpan.FromSeconds(1.5);
                 
                
                var result = sre.Recognize();
 
                if (result.Text == "Yes")
                {
                    rblist1.Checked = true; 
                    break;
                }
                else if (result.Text == "No")
                {
                    rblist2.Checked = true; 
                    break;
                }
                else if (result.Text == "Not Sure")
                {
                    rblist3.Checked = true; 
                    break;
                }
                else
                {
                    rblist1.Checked = false;
                    rblist2.Checked = false;
                    rblist3.Checked = false;
                    break;
                }                 
            }

This is the code working as of now, but at the end the page is keep on loading and nothing happened, hope once the page loaded ended the option button will be selected.

Help me on this, why the page is keep on loading?