Closed
Description
.NET version
.NET 7.0.0
Did it work in .NET Framework?
Yes
Did it work in any of the earlier releases of .NET Core or .NET 5+?
.NET 6.0.0
Issue description
When trying to use the latest version of System.Speech from Windows Forms, it throws a System.NullReferenceException while trying to access the SpeechSynthesizer class.
Steps to reproduce
Run the attached project and click the button.
private void Button_Click(object sender, EventArgs e)
{
label.Text = string.Empty;
using var speech = new SpeechSynthesizer();
// System.Speech 7.0.0-rc.1.22426.10 throws System.NullReferenceException exception here.
speech.SetOutputToDefaultAudioDevice();
speech.SelectVoiceByHints(VoiceGender.Female);
speech.SpeakProgress += (sender, e) => { label.Text += $"{e.Text} "; };
speech.Speak("This is a test of the SpeechSynthesizer class.");
label.Text += "\r\nFinished speaking...\r\n";
}Expected: The speech synthesizer should read out the contents of the string.
Actual: Accessing the newly created speech SpeechSynthesizer object throws a System.NullReferenceException exception.
Repro project:
WinFormsSpeechRepro.zip