Design mode -11-proxy mode

Description

1. Write an interface that both the agent and the real business can use

2. Aggregation of real business in the agent, no external exposure to real business, and can be in the agent for real business before and after doing some operations

 Public InterfaceIsubject {voidRequest (); } classProxyrealsubject:isubject {realsubject realsubject;  Public voidRequest () {if(realsubject==NULL) {Realsubject=NewRealsubject (); } Console.WriteLine ("operations before performing a realsubject");            Realsubject.request (); Console.WriteLine ("actions after performing a realsubject"); }    } classRealsubject:isubject { Public voidRequest () {Console.WriteLine ("Execution Realsubject Complete"); }} isubject Isubject=NewProxyrealsubject (); Isubject.request ();

Design mode -11-proxy mode