"Please Don’t Fail Me!" - Decorator Cries Out to Template Method

using System;

namespace HypotheticalShapeLib
{
   public abstract class Shape
   {
      public  string TypeName { get; private set; }

      public Shape(string typeName)
      {
         TypeName = typeName;

         Console.WriteLine("Shape ctor");
      }

      // This is a template method
      public void Draw()
      {
         Console.WriteLine(string.Format("Drawing {0}", TypeName));

         CreateDC();
         InitDC();
         Paint();
         ReleaseDC();
      }

      // The following methods have been marked as protected internal so that
      // only derived classes or any classes within the containing assembly can 
      // access these methods.
      // If these methods are not marked internal, the Decorator pattern cannot be implemented
      // on the Shape class. Marking as internal implies that that ShapeDecoratorBase has to be implemented
      // in the same assembly.
      protected internal abstract void CreateDC();
      protected internal abstract void InitDC();
      protected internal abstract void Paint();
      protected internal abstract void ReleaseDC();
   };

   public class Circle : Shape
   {
      public Circle()
         : base("Circle")
      {
         Console.WriteLine("Circle ctor");
      }

      protected internal override void CreateDC()
      {
         Console.WriteLine("Circle Create DC");
      }

      protected internal override void InitDC()
      {
         Console.WriteLine("Circle InitDC");
      }

      protected internal override void Paint()
      {
         Console.WriteLine("Circle PaintDC");
      }

      protected internal override void ReleaseDC()
      {
         Console.WriteLine("Circle ReleaseDC");
      }
   }
}