private void buttonKeepAudio_Click(object sender, EventArgs e)
 {
     InvalidAudioDialogResult = InvalidAudioDialogResult.KeepAudio;
     Close();
 }
 private void buttonRemoveAudio_Click(object sender, EventArgs e)
 {
     InvalidAudioDialogResult = InvalidAudioDialogResult.RemoveAudio;
     Close();
 }