void btnSpeakFormatText_Click(object sender, EventArgs e) { btnSpeakFormatText.Enabled = false; try { tts.Volume = (comboBox3.SelectedItem as EnumData <SpeechVolumeEnums>).Value; tts.Speed = (comboBox2.SelectedItem as EnumData <SpeechSpeedEnums>).Value; tts.Speaker = (comboBox1.SelectedItem as SpeakerInfo).Id; tts.SpeakFormatText(rtbContent.Text); } catch (Exception ex) { } btnSpeakFormatText.Enabled = true; }