A list of multiple data types?

Question

I have two classes as such:

public class MachineLine
{
    public double X1;
    public double Y1;
    public double X2;
    public double Y2;
    public dou         


        

Answer 1

Just create your own interface

public interface IMySillyInterface {}

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

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

List list = new List 
                                {
                                    new MachineCircle(), 
                                    new MachineLine()
                                };