designPatternGuru/DesignPatternGuru/ChainOfResponsibility/COR/DogHandler.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ChainOfResponsibility.COR
{
    internal class DogHandler : AbstractHandler
    {
        public override object Handle(object request)
        {
            if ((request as string) == "MeatBall")
                return $"Dog: I'll eat the {request.ToString()}";
            else
                return base.Handle(request);
        }
    }
}