1  abstract class AbstractClass
2  {
3    public abstract void PrimitiveOperation1();
4    public abstract void PrimitiveOperation2();
5
6    // The "Template method" 
7    public void TemplateMethod()
8    {
9      PrimitiveOperation1();
10      PrimitiveOperation2();
11      Console.WriteLine("");
12    }
13  }

  // "ConcreteClass" 

  class ConcreteClassA : AbstractClass
  {
    public override void PrimitiveOperation1()
    {
      Console.WriteLine("ConcreteClassA.PrimitiveOperation1()");
    }
    public override void PrimitiveOperation2()
    {
      Console.WriteLine("ConcreteClassA.PrimitiveOperation2()");
    }
  }