public Purchase(Merchandise merch, int antal, double purchasePrice, int[] sizeAntal) { this.merch = merch; this.antal = antal; this.purchasePrice = purchasePrice; this.sizeAntal = new int[0]; if (sizeAntal.Length > 0) { this.sizeAntal = new int[amountOfSizes]; for (int i = 0; i < amountOfSizes; i++) { if (merch.Size[i] == true) { this.sizeAntal[i] = sizeAntal[i]; } } } updateStock(); savePurchase(); }