How to use Microsoft aria and Microsoft cortana voices in my C# winforms app?

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C#

.NET

Visual-Studio

WinForms

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I have a program that when Ctrl+C is pressed twice fast the text in clipbaord gets spoken.

Like this I get only (for English):
Mark
David
Zira

With David and Zira appearing twice each.

And I see voices for other languages installed in my Windows too.

What I have tried:

private void FormMain_Load(object sender, EventArgs e)
        {


            SpObjectTokenCategory otc = new SpObjectTokenCategory();

            otc.SetId("HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Speech_OneCore\\Voices");

            ISpeechObjectTokens tokenEnum = otc.EnumerateTokens();

            foreach (SpeechLib.ISpeechObjectToken v in tokenEnum)
            {
                string s = v.GetDescription(49);
                //comboBoxVoice.Items.Add(v.GetDescription(49));
                lstOneVoice.Add(new oneVoice(s, v));
            }


    



            SpObjectTokenCategory otc2 = new SpObjectTokenCategory();

            otc2.SetId("HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Speech\\Voices");

            ISpeechObjectTokens tokenEnum2 = otc2.EnumerateTokens();

            foreach (SpeechLib.ISpeechObjectToken v in tokenEnum2)
            {
                string s = v.GetDescription(49);

                foreach (string s2 in comboBoxVoice.Items)
                {
                    if (s == s2)
                        goto nextVoice;
                }
                //comboBoxVoice.Items.Add(s);
                //globalVoicesObjectsList.Add(v);

                lstOneVoice.Add(new oneVoice(s, v));

            nextVoice:;
            }