// CartItemBox
private void OnAnyButtonClick_CartItemBox(object sender, EventArgs e)
{
Button button = (Button)sender;
ProductAmount pe = (ProductAmount)button.Tag;
if (button.Name == "QuantityAddButton")
{
cart.Add(pe.Product);
RefreshTotalCost();
var c = GetCartItemBox();
if (cart.TryGetRebate(pe.SerialNumber, out DiscountAmount de))
{
c.SetDiscountInfo(de);
}
}
else if (button.Name == "QuantitySubtractButton")
{
cart.Remove(pe.Product);
RefreshTotalCost();
var c = GetCartItemBox();
if (c.HasDiscountInfo)
{
cart.TryGetRebate(pe.SerialNumber, out DiscountAmount de);
c.SetDiscountInfo(de);
}
}
else if (button.Name == "RemoveButton")
{
cart.RemoveAll(pe.Product);
RefreshTotalCost();
}
// lokal metod för att undvika kod-duplicering:
CartItemBox GetCartItemBox()
=> (CartItemBox)(button.Parent.Parent.Parent.Parent.Parent.Parent);
}
public bool TryGet(int serialNumber, out ProductAmount productAmount) => cart.cart.TryGetValue(serialNumber, out productAmount);
public void Add(ProductAmount productEntry) => Add(productEntry.Product, productEntry.Amount);