c# - 通过属性重新分配结构的成员变量

Question

所以我有一个按以下方式定义的结构:

    public struct Item
{
    public string _name { get; set; }
    public double _weight
    {
        get 
        {
            return _weight;
        }
        set
        {
            _weight = value;

            //Shipping cost is 100% dependent on weight. Recalculate it now.
            _shippingCost = 3.25m * (decimal)_weight;

            //Retail price is partially dependent on shipping cost and thus on weight as well.  Make sure retail price stays up to date.
            _retailPrice = 1.7m * _wholesalePrice * _shippingCost;
        }
     }
    public decimal _wholesalePrice
    {
        get
        {
            return _wholesalePrice;
        }
        set
        {
            //Retail price is partially determined by wholesale price.  Make sure  retail price stays up to date.
            _retailPrice = 1.7m * _wholesalePrice * _shippingCost;
        }
    }
    public int _quantity { get; set; }
    public decimal _shippingCost { get; private set; }
    public decimal _retailPrice { get; private set; }


    public Item(string name, double weight, decimal wholesalePrice, int quantity) : this()
    {
        _name = name;
        _weight = weight;
        _wholesalePrice = wholesalePrice;
        _quantity = quantity;
    }
//More stuff

我在另一个类中也有一个 Item 实例。当我尝试通过以下命令调用 weight 属性时，程序崩溃了:

currentUIItem._weight = formattedWeight;

未提供描述性错误。请注意，此时，currentUIItem 已使用无参数默认构造函数进行了更新。现在，这是奇怪的部分。当我删除 weight 的 set 属性的自定义实现并将其替换为通用 { get;放; }，作业完美无缺。

有人知道这是怎么回事吗？这是结构的一个怪癖，可以很好地与类一起工作吗？

Answer 1

您在 _weight 属性的 set 方法中递归调用了 _weight 属性。