public ActionResult UpdateCompositionsEquipes(long? idToUpdate)
 {
     if (idToUpdate.HasValue)
     {
         Models.CompositionsEquipes BDCompo = new Models.CompositionsEquipes();
         BDCompo.SelectByID(idToUpdate.ToString());
         return View(BDCompo);
     }
     else
     {
         return RedirectToAction("Index");
     }
 }