public static void DelAllItem(this List <OrderClass> Order, string Code)
{
OrderClass o = Order.Find(x => x.Code == Code);
if (o != null)
{
Order.Remove(o);
}
}
public static void MinusItem(this List <OrderClass> Order, string Code)
{
OrderClass o = Order.Find(x => x.Code == Code);
if (o != null)
{
o.Quantity -= 1;
if (o.Quantity <= 0)
{
Order.Remove(o);
}
}
}
public static void AddItem(this List <OrderClass> Order, string Code, string Title, decimal Price)
{
OrderClass o = Order.Find(x => x.Code == Code);
if (o != null)
{
o.Quantity += 1;
}
else
{
Order.Add(new OrderClass {
Code = Code, Title = Title, Quantity = 1, Price = Price
});
}
}