桥接模式

UML类图：

实例实现代码：

    class Abstraction
    {
        protected Implementor implementor;

        public void SetImplementor(Implementor implementor)
        {
            this.implementor = implementor;
        }

        public virtual void Operation()
        {
            implementor.Operation();
        }

    }

    class RefinedAbstraction : Abstraction
    {
        public override void Operation()
        {
            implementor.Operation();
        }
    }

    abstract class Implementor
    {
        public abstract void Operation();
    }

    class ConcreteImplementorA : Implementor
    {
        public override void Operation()
        {
            Console.WriteLine("具体实现A的办法履行");
        }
    }

    class ConcreteImplementorB : Implementor
    {
        public override void Operation()
        {
            Console.WriteLine("具体实现B的办法履行");
        }
    }    class Abstraction
    {