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();
}