private void CloseVolumeWindow()
{
_VolumeWindow.Close();
_VolumeWindow = null;
VolumeIcon.Source = new BitmapImage(new Uri(@"/Images/音量.png", UriKind.RelativeOrAbsolute));
}
private void OpenVolumeWindow()
{
_VolumeWindow = new VolumeWindow(this);
_VolumeWindow.Show();
VolumeIcon.Source = new BitmapImage(new Uri(@"/Images/音量_高光.png", UriKind.RelativeOrAbsolute));
}