Описать структуру для хранения информации

 struct Product
    {
        public string Name,Producer,Date;
        public double Price;
        public int Amount;
 
       public Product(string name,string producer,string date,double price,int amount)
        {
            Name = name;
            Producer = producer;
            Date = date;
            Price = price;
            Amount = amount;
        } 
 
       
    }
    struct ProductContainer
    {
        Stack<Product> stack;
        Dictionary<string,double> AveragePriceForEachProducer;
        Dictionary<string, double> AmountOfProducForEachProducer;
        Dictionary<string, double> SumPriceOfProducForEachProducer;
        public void Add(Product p)
        {
           if(stack.Count<1)  stack = new Stack<Product>();
            stack.Push(p);
            if (!AveragePriceForEachProducer.ContainsKey(p.Producer))
            {
                AveragePriceForEachProducer.Add(p.Producer, p.Price);
                AmountOfProducForEachProducer.Add(p.Producer, 1);
                SumPriceOfProducForEachProducer.Add(p.Producer, p.Price);
            }
            else
            {
                AmountOfProducForEachProducer[p.Producer]++;
                SumPriceOfProducForEachProducer[p.Producer] += p.Price;
                AveragePriceForEachProducer[p.Producer] = SumPriceOfProducForEachProducer[p.Producer] / AmountOfProducForEachProducer[p.Producer];
            }
 
        }
    }