public void GiveShot(int animalId) { Animal thisAnimal = ourAnimals.Where(a => a.AnimalId == animalId).Select(a => { a.ThisHealth.ShotsDate = DateTime.Now; a.ThisHealth.HadShots = true; return(a); }).Single(); AnimalHealthRepository health = new AnimalHealthRepository(); health.UpdateAnimalShot(thisAnimal); }