// Text.cs = Base class
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Translation
{
    public class Text
    {
        public Text()
        {

        }

        public virtual string content()
        {
            return "Dat is de text.";
        }
    }
}

// CharDecorator.cs

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

using Translation;

namespace Translation.Decorator
{
    public abstract class CharDecorator : Text
    {
    }
}

// Emphasis.cs

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

using Translation.Decorator;
using Translation;

namespace Translation.Decorator.Format
{
    public class Emphasis : CharDecorator
    {
        Text text;

        public Emphasis(Text t)
        {
            text = t;
        }

        public override string content()
        {
            return "<em>" + text.content() + "</em>";
        }
    }
}

// Program.cs

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

using Translation.Decorator.Format;
using Translation.Decorator;

namespace Translation
{
    class Program
    {
        private static string inputString;
        static void Main(string[] args)
        {
            Console.WriteLine("Please insert your string that will be translated:");
            Console.WriteLine();
            inputString = Console.ReadLine();
            // Start translation here
            Text text = new Text();
            text = new Emphasis(text);
            // Stop translation here
            Console.WriteLine(text.content());
            Console.ReadLine();
        }
    }
}