//When "Buy Now" is pressed on Index.
public IActionResult OnGetBuyNow(int id)
{
//Get the product model.
var productModel = new ProductsModel();
Basket = SessionHelper.GetObjectFromJson <List <Item> >(HttpContext.Session, "basket");
if (Basket == null)
{
//Store each Product as an Item in a new list "Basket".
Basket = new List <Item>
{
new Item
{
Product = productModel.Find(id),
ItemQuantity = 1
}
};
//Store this new List in the Server Session storage.
SessionHelper.SetObjectAsJson(HttpContext.Session, "basket", Basket);
}
else
{
//If the Basket already exists, confirm is the Item is already in the List.
int index = Exists(Basket, id.ToString());
if (index == -1)
{
Basket.Add(new Item
{
Product = productModel.Find(id),
ItemQuantity = 1
});
}
else
{
//If already exist, Increment the amount of that item.
Basket[index].ItemQuantity++;
}
SessionHelper.SetObjectAsJson(HttpContext.Session, "basket", Basket);
}
return(RedirectToPage("Basket"));
}
