// POST: api/Purchaces
 public void Post(Dto.ClassPurchases p)
 {
     Bl.ClassPurchases.PostPurchases(p);
 }
 public static void PostPurchases(Dto.ClassPurchases p)
 {
     Dal.ClassPurchases.PostPurchase(Dto.Convert.PurchasesConvert.PostPurchases(p));
 }