Question

我有一个存储过程，该过程返回一个结果集，但具有包含客户，订单和定价数据的字段。在我的模型中，我分离了模型对象的客户，订单和价格，并创建了一个模型绑定器以将所有对象绑定到一个模型中。现在，定价模型中的设置者取决于客户基本价格的返回值。如何实现二传手？即时消息，我使用dapper进行对象映射

public class Customer
{
    public int ID { get; set; }
    public string Name{ get; set; }
    public int baseprice {get; set;}
}

public class Order
{
    public int ID { get; set; }
    public string Name{ get; set; }
}

public class Pricing
{
    int _price;
    public int ID { get; set; }
    public string Price
        { get { return this._price; }
          set { this._price = Customer.baseprice * 10 }
        }
}


public class CustomerModelBinder
{
    public Customer Cust{get; set}
    public Order order{get;set}
    public Pricing pricing{get; set}
}

CustomerModelBinder cust = new CustomerModelBinder();
//put value to cust here......

Answer 1

如果Pricing类保留Customer类，这将很简单。

public class Customer
{
    public int ID { get; set; }
    public string Name { get; set; }
    public int BasePrice { get; set; }
}
public class Pricing
{
    public int ID { get; set; }
    public int Price => Customer.BasePrice * 10;
    public Customer Customer { get; set; }
}

您可以在this post中找到如何将查询结果放入此类。

Answer 2

您不能那样做，因为您正在创建实例。您可以在CustomerModelBinder构造函数中完成此操作。请注意，您需要先设置Customer baseprice。

public class Pricing
{
    public int ID { get; set; }
    public int Price { get; set; }
}

public class CustomerModelBinder
{
    public Customer Cust{get; set}
    public Order order{get;set}
    public Pricing pricing{get; set}
    public CustomerModelBinder(int custBasePrice)
    {
        Cust.baseprice = custBasePrice;
        pricing.Price = Cust.baseprice * 10;
    }
}

或者您可以在Pricing Price

中进行乘法

public class Pricing
{
    public int ID { get; set; }
    private int _price;
    public int Price
    {
        get => _price;
        set
        {
            _price = value * 10;
        }
     }
}

public class CustomerModelBinder
{
    public Customer Cust{get; set}
    public Order order{get;set}
    public Pricing pricing{get; set}
    public CustomerModelBinder(int custBasePrice)
    {
        Cust.baseprice = custBasePrice;
        pricing.Price = Cust.baseprice;
    }
}

一个模型的设定者取决于另一个模型的值

2 个答案: