Question

I have a abstract base C# class with a couple of methods that has to be overrided. How can I enforce this? Right now I throw an exception as a base implementation

    public virtual string Description
    {
        get { throw new NotImplementedException(); }
    }

    public virtual string ErrorMessage
    {
        get { throw new NotImplementedException(); }
    }

That solution however feels a bit wrong and very little intuitive … Are there other ways to solve this in C#?

Answer 1

Make the properties (these are not methods in your example) abstract.

public abstract string Description{ get; }

public abstract string ErrorMessage{ get; }