How to play a sound in C#, .NET

You could use:

System.Media.SoundPlayer player = new System.Media.SoundPlayer(@"c:\mywavfile.wav");
player.Play();

You can use SystemSound, for example, System.Media.SystemSounds.Asterisk.Play();.

For Windows Forms one way is to use the SoundPlayer

private void Button_Click(object sender, EventArgs e)
{
    using (var soundPlayer = new SoundPlayer(@"c:\Windows\Media\chimes.wav")) {
        soundPlayer.Play(); // can also use soundPlayer.PlaySync()
    }
}

MSDN page

This will also work with WPF, but you have other options like using MediaPlayer MSDN page