Question

I’m a PHP programmer by default, and I need a little help with a C# .NET (Micro Frameworks, but that doesn’t matter here) project.

Basically, I have a class that allows for control of an RC car or airplane speed controller. The class is already written, but I need a way to import settings into the class, since diffident electric speed controllers require different settings.

My ideal set up would be something like this:

SpeedController esc = new SpeedController(SpeedControllers.TRAXXAS_XL5);

I know how the constructor and all that work, but how do I configure the SpeedControllers.TRAXXAS_XL5 part? I would create a base class (Speedcontrollers) and then a class that extends it, overriding the default values, correct?

Can someone direct me to a tutorial on what I am talking about or a small code snippet of a child class overriding properties in a parent class?

Answer 1

I’ll just take an example using a hypothetical MaxSpeed the conroller might have.

abstract class SpeedControllers {
    public abstract int MaxSpeed { get; }

    public class TRAXXAS_XL5 : SpeedControllers{
        public override int MaxSpeed {
            get {
                return 30;
            }
        }
    }
}

Then in your SpeedController constructor

class SpeedController {
    readonly SpeedControllers properties;
    public SpeedController(SpeedControllers properties) {
        this.properties = properties;
    }
    public int MaxSpeed {
        get {
            return properties.MaxSpeed;
        }
    }
 }

Call it with new SpeedController(new SpeedControllers.TRAXXAS_XL5())