// Ajouter ou retirer l'index de photo
private void AddRemove_SlideShow(int photoId)
{
int index = SlideShowList.IndexOf(photoId);
if (index == -1)
{
SlideShowList.Add(photoId);
}
else
{
SlideShowList.RemoveAt(index);
}
}
private bool InSlideShow(int photoId)
{
return(SlideShowList.IndexOf(photoId) != -1);
}