C#反射在实际应用中的实例代码

<appSettings> 
    <add key="BizAssembly" value="PSMS.Biz"/> 
</appSettings> 

/// <summary> 
    /// 完成从客户端获取远程业务逻辑对象的代理 
    /// </summary> 
    public static class FacadeService 
    { 
        static IDictionary<string, Type> serviceClassCatalog;//定义一个键值对接口对象 
        static FacadeService() 
        { 
            serviceClassCatalog = new Dictionary<string, Type>(); 
            Assembly assembly = Assembly.Load(new AssemblyName(ConfigurationManager.AppSettings["BizAssembly"]));//开始加载程序集对象 
            Type[] types = assembly.GetExportedTypes();//获取程序集中所有对象的类型集合 
            Type baseType = typeof(MarshalByRefObject); 
            foreach (Type type in types) 
            { 
                if (baseType.IsAssignableFrom(type)) 
                { 
                    Type[] interfaces = type.GetInterfaces(); 
                    //此处登记的是接口类型最终派生的接口类型，即最高层接口 
                    if (interfaces.Length > 0) 
                    { 
                        serviceClassCatalog.Add(interfaces[0].FullName, type); 
                    } 
                } 
            } 
        } 

        /// <summary> 
        /// 根据传入的业务逻辑类的接口类型，返回实现该接口的类型对象实例远程代理 
        /// </summary> 
        /// <typeparam name="IFacade">具体的业务逻辑接口类型</typeparam> 
        /// <returns>实现该接口的类型对象实例远程代理</returns> 
        public static IFacade GetFacade<IFacade>() 
        { 
            string typeName = typeof(IFacade).FullName; 
            if (serviceClassCatalog.ContainsKey(typeName)) 
            { 
                object realProxy = Activator.CreateInstance(serviceClassCatalog[typeName]); 
                return (IFacade)realProxy; 
            } 
            else 
            { 
                throw new Exception("未包含接口所定义的服务类型。"); 
            } 
        } 
    } 

public partial class MyTest: System.Web.UI.Page 
{ 
   //在后台代码中构建一个（测试用的）接口的实例对象 
    static IUserInfoFacade userInfoFacade = FacadeService.GetFacade<IUserInfoFacade>(); 
   //其它功能实现代码 
   //...... 
   //...... 
   private void Method1() 
   { 
       //具体的调用 
       List<UserInfo> lstUserInfo = userInfoFacade.GetUserInfoList(unitCode, 0, 0); 
       //其它功能实现代码 
        //...... 
       //...... 
   } 
}