public interface Creator
     {
          Product factory();//工厂方法
     }
 
ConcreteCreator1:
 class ConcreteCreator1:Creator
     {
         public Product factory()//工厂方法
         {
              return new ConcreteProduct1();
         }
     }
 
ConcreteCreator2:
     class ConcreteCreator2:Creator
     {
         public Product factory()//工厂方法
         {
              return new ConcreteProduct2();
         }
     }
 
Product:
public interface Product
     {
        
     }
 
ConcreteProduct1:
class ConcreteProduct1:Product
     {
         public ConcreteProduct1()
         {
              Console.WriteLine ("Creat ConcreteProduct1");
         }
          
     }
 
ConcreteProduct2:
     class ConcreteProduct2:Product
     {
         public ConcreteProduct2()
         {
              Console.WriteLine ("Creat ConcreteProduct2");
         }
          
     }
 

//csharp/4479