public string AddItem(Product product, decimal quantity)
{
var item = this.ProductCartItems
.Where(p => p.Product.Id == product.Id)
.FirstOrDefault();
if (item == null)
{
var cartItem = new ProductCartItem
{
Product = product,
Quantity = quantity
};
this.ProductCartItems.Add(cartItem);
}
else
{
return "You have already ordered this product!";
}
return null;
}
public string AddItem(Product product, decimal quantity)
{
var item = this.ProductCartItems
.Where(p => p.Product.Id == product.Id)
.FirstOrDefault();
if (item == null)
{
var cartItem = new ProductCartItem
{
Product = product,
Quantity = quantity
};
this.ProductCartItems.Add(cartItem);
}
else
{
return("You have already ordered this product!");
}
return(null);
}