对象建模问题 [英] Object modelling problem

问题描述

我有汽车课，每个课都有附加物品清单(皮革，腹部，折叠镜等)

I have got class Car, and each class has list of extras (leather, abs, Folding mirrors etc...)

public Extra
{
public bool Paid {get;set;}
public string Name {get;set;}
public string Code {get;set;}
}

现在，更好的是:

class Car
{
public Extra Leather {get;set;}
public Extra FoldingMirrors {get;set;}
public Extra Abs {get;set;}
}

或更好:

class Car
{
private List<Extra> _listOfExtras=new List<Extra>

public List<Extra> ListOfExtras
{
...
}
}

最糟糕的是:

我的winforms应用程序可以脱机工作，并且每月有一个正在为我发送数据.

My winforms application works offline and one per month is sending datas for me.

我必须保留此应用程序中可用(每个汽车用户选择的配件)配件的列表，因此我认为更好的方法是选择之一.

I must hold list Of available (foreach car user choose extras) extras in this application so better way I think is option one.

如何在我的应用程序中保留此附加清单?它每月仅与Web服务连接一次.

how hold this list of extras in my applications ? It connect with webservice only one time per month.

推荐答案

附加内容的列表或字典(以便于访问)会更加灵活.

A list or dictionary (for easier access) of extras would be more flexible.

这意味着随着附加功能在汽车中的添加和/或移除，您无需修改​​Car类，而如果明确添加了每个类，则无需进行修改.

It would mean that as extras were added and/or removed from a car you wouldn't have to modify the Car class which you would have to do if each were added explicitly.

有多种方法可以在本地存储列表.您可以序列化为文件-纯文本或XML，这会更好，因为您拥有可以为您进行序列化的类，或者可以将其保存在本地数据库中.

There are various ways to store the list locally. You could serialise to a file - either plain text or XML which would be better as you've got classes that do the serialisation for you, or you could hold it in a local database.

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