I have something wrong with my C# voice recognition code. Can you guys please help me out and tell me how to fix these errors.

See more:

C#

recognition

using System;
using System.Diagnostics;
using System.Speech.Recognition;
using System.Speech.Synthesis;
using System.Windows.Forms;
using System.Threading.Tasks;


namespace Voice_Recognition
{
    public partial class Form1 : Form
    {
        SpeechSynthesizer ss = new SpeechSynthesizer();
        PromptBuilder pb = new PromptBuilder();
        SpeechRecognitionEngine sre = new SpeechRecognitionEngine();
        Choices clist;

        public Choices Clist { get => clist; set => clist = value; }

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void btnstart_Click(object sender, EventArgs e)
        {
            btnstart.Enabled = false;
            btnstart.Enabled = true;
            Clist.Add(new string[] { "Hello", "How are you jarvis", "What is the current time", "Open Google", "Thank you", "Close", });
            Grammar gr = new Grammar(new GrammarBuilder(Clist));

            try
            {
                sre.RequestRecognizerUpdate();
                sre.LoadGrammar(gr);
                sre.SpeechRecognized += sre_SpeechRecognized;  // (" Error 1)")
                sre.SetInputToDefaultAudioDevice();
                sre.RecognizeAsync(RecognizeMode.Multiple);
 
            }

            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "Error");
            }

           
        }

        void sre_SpeechRecognized(object sender, SpeechDetectedEventArgs e)
        {
            switch (e.Result.Text.ToString()) //("Error-2")
            {
                case "Hello":
                    ss.SpeakAsync("Hello Sir");
                    break;
                case "How Are you":
                    ss.SpeakAsync("Every Ting is running smothly. How are you");
                    break;
                case "What is the current time":
                    ss.SpeakAsync("Current time is " + DateTime.Now.ToLongDateString());
                    break;
                case "Thank you Jarvis":
                    ss.SpeakAsync("It's my pleasure to serve you sir");
                    break;
                case "Open Google":
                    Process.Start("Opening Google ", "http://www.google.com");
                    break;
                case "close":
                    Application.Exit();
                    break;
                default:
                    break;
            }
         txtcontents.Text += e.Result.text.ToString() + Environment.NewLine; //("Error-3")
        }

        private void btnstop_Click(object sender, EventArgs e)
        {
            sre.RecognizeAsyncStop();
            btnstart.Enabled = true;
            btnstart.Enabled = false;
        }
    }
}

What I have tried:

I try my best but failed. please help me out. Any kind of suggestion and help is appreciated in advance.

these are the errors in my code and i have mention these errors in the code like (Error-1, Error-2 and Error-3)

Error-1) No overload for 'sre_SpeechRecognized' matches delegate 'EventHandler<SpeechRecognizedEventArgs

Error-2) SpeechDetectedEventArgs' does not contain a definition for 'Result' and no extension method 'Result' accepting a first argument of type 'SpeechDetectedEventArgs

Error-3) SpeechDetectedEventArgs' does not contain a definition for 'Result' and no extension method 'Result' accepting a first argument of type 'SpeechDetectedEventArgs'