根据设置器中另一个属性的值更新类属性 [英] Update a class property based on another property's value in the setter

问题描述

我有两个模型类:

public class Person
{
    public int PersonId { get; set; }
    public string Name { get; set; }
    public int AddressId { get; set; }
    public Address AddressInfo { get; set; }
}

public class Address
{
    public int AddressId { get; set; }
    public string streetName { get; set; }
    public string City { get; set; }
    public string State { get; set; }
}

如果Person.AddressInfo.AddressId中的任何值得到更新，如何自动更新Person.AddressId?

If any value gets update in Person.AddressInfo.AddressId, how can I update the Person.AddressId automatically?

推荐答案

这是什么?

public class Person
{
    public int PersonId { get; set; }
    public string Name { get; set; }
    public int AddressId 
    { 
        get{ return AddressInfo?.AddressId ?? 0 } 
        set{ AddressInfo?.AddressId = value; }
    }
    public Address AddressInfo { get; set; }
}

public class Address
{
    public int AddressId { get; set; }
    public string streetName { get; set; }
    public string City { get; set; }
    public string State { get; set; }
}

这使用AddressInfo作为后台存储

This uses the AddressInfo as the back storage

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