static void Main(string[] args)
{
Subject subject = new RealSubject();
ProxySubject proxySubject = new ProxySubject();
proxySubject.subject = subject;
proxySubject.visit();
Console.ReadLine();
}
static void Main(string[] args)
{
//初始化一个委托者
RealSubject real = new RealSubject();
//初始化一个代理者
Proxy proxy = new Proxy();
//委托者和代理者建立关系
proxy.Subject = real;
//代理者去完成某事
proxy.Request();
Console.Read();
}