Decorator_Exercise.cs

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using System;
 
namespace DesignPatternExamples_csharp
{
    internal class Decorator_Exercise
    {
        // ! [Using Decorator in C#]
        public void Run()
        {
            Console.WriteLine();
            Console.WriteLine("Decorator Exercise");
            IRenderElement baseElement = new TextElement("This is raw text");
 
            // Wrap the base element in three decorators.
            IRenderElement wrappedElement =
                new WhiteBackgroundDecorator(
                    new UnderlineDecorator(
                        new RedForegroundDecorator(baseElement)));
 
            // Now render the elements to the console.
            Console.WriteLine("  base Text element: \"{0}\"", baseElement.Render());
            Console.WriteLine("  Decorated element: \"{0}\"", wrappedElement.Render());
            Console.WriteLine("  Done.");
        }
        // ! [Using Decorator in C#]
    }
}