public override bool Equals(object obj)
{
Goods g = obj as Goods;
return(g != null && g.Name == Name && g.Price == Price);
}
/*
* public double TotalSum
* {
* get=> goodPrice * Number;
* set => TotalSum=value;
*
* }
*/
public OrderItem(String name, double price, int number)
{
goods = new Goods(name, price);
Number = number;
}