Proxy 为其他对象提供一个代理（surrogate)或者占位符(placeholder),从而完成对其他对象的访问。...
自定义代理类 1using System; 2using System.Data; 3 4namespace DataLayer 5{ 6 /**//// <summary> 7 /// This class strictly forwards every call to a subject object. To 8 /// intercept any...
