private void buttonSound_Click(object sender, RoutedEventArgs e)
{
if (this.AVSession != null)
{
this.AVSession.Mute(!this.AVSession.IsMute, twrap_media_type_t.twrap_media_audio);
this.imageSound.Source = MyImageConverter.FromBitmap(this.AVSession.IsMute ? Properties.Resources.sound_off_16 : Properties.Resources.sound_on_16);
}
}