void player_ProgressChanged(object sender, TextToSpeech.ProgressChangedEventArgs e)
{
SpeechPart speechPart = e.Data;
rtbContent.Select(0, speechPart.TextIndex);
rtbContent.SelectionColor = Color.Gray;
rtbContent.Select(speechPart.TextIndex, speechPart.TextLength);
rtbContent.SelectionColor = Color.Red;
rtbContent.Select(speechPart.TextIndex + speechPart.TextLength, 0);
}
void tts_ProgressChanged(object sender, TextToSpeech.ProgressChangedEventArgs e)
{
if (this.InvokeRequired)
{
this.Invoke(new EventHandler <TextToSpeech.ProgressChangedEventArgs>(tts_ProgressChanged), sender, e);
return;
}
SpeechPart speechPart = e.Data;
progressBar.Maximum = speechPart.TotalCount;
progressBar.Value = speechPart.TextIndex + speechPart.TextLength;
player.PlayRawAudioSync(speechPart);
}