多种数据类型的列表？ [英] A list of multiple data types?

问题描述

我有两个阶级作为阶级：

I have two classes as such:

public class MachineLine
{
    public double X1;
    public double Y1;
    public double X2;
    public double Y2;
    public double Thickness;
}

public class MachineCircle
{
    public double CenterX;
    public double CenterY;
    public double Radius;
}

我想使能容纳这两个列表，但我不不想我的列表，可以持有任何其他数据类型。 ？如何才能做到这一点。

I want to make a List which can hold both of these, but I don't want my list to be able to hold any other data type. How can this be done?

推荐答案

要做到这一点，最简单的办法是定义一个接口，并有两种类型的实现：

The easiest way to do this is to declare an interface, and have both types implement it:

public interface IMachine { … }

public class MachineLine : IMachine
{
    public double X1;
    public double Y1;
    public double X2;
    public double Y2;
    public double Thickness;
}

public class MachineCircle : IMachine
{
    public double CenterX;
    public double CenterY;
    public double Radius;
}

然后，你可以这样做：

Then you can do this:

List<IMachine> m = new List<IMachine>();

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