如何将相同基类的子类放入列表中? [英] How can I put subclasses from the same baseclass into a list?

问题描述

如何将相同基类的子类放入列表中?

How can I put subclasses from the same baseclass into a list?

我正在使用ASP.NET MVC3，并创建了具有名称，年龄等属性的基本模型类.现在，我创建了具有更多详细信息的子模型(子类). 为了轻松处理子类，我想要一个包含对象的列表，但是如何呢?

I´m working with ASP.NET MVC3 and have created a basemodel-class with properties like name, age and so on. Now i have created submodels (subclasses) with more details. To easily handle the subclasses i want a list with the objects in it but how?

我已经阅读了有关接口或ICollection等的信息，但不知道什么是正确的选择以及如何开始:-(

I have read about interfaces or ICollection and so on but don´t know what´s the right choice and how to start :-(

推荐答案

只需创建列表，使其属于基类:

Just create the list so it's of the base class:

List<BaseClass> myList = new List<BaseClass>();

然后正常添加子类对象:

then add your subclass objects as normal:

myList.Add(new SubClass1());
myList.Add(new SubClass2());

等其中:

public class SubClass1 : BaseClass {}
public class SubClass2 : BaseClass {}

然后，当您找到它们时，可以使用is和as运算符来确定它们实际是什么类型并适当地处理它们.

Then when you get them out you can use the is and as operators to determine what type they actually are and deal with them as appropriate.

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