using System;using System.Collections.Generic;using System.Text;namespace Pattern.Facade
{
/// <summary>
/// Message实体类
/// </summary> public class MessageModel { /// <summary> /// 构造函数 /// </summary> /// <param name="msg">Message内容</param> /// <param name="pt">Message发布时间</param> public MessageModel(string msg, DateTime pt) { this._message = msg; this._publishTime = pt; } private string _message; /// <summary> /// Message内容 /// </summary> public string Message { get { return _message; } set { _message = value; } } private DateTime _publishTime; /// <summary> /// Message发布时间 /// </summary> public DateTime PublishTime { get { return _publishTime; } set { _publishTime = value; } } }
}using System;using System.Collections.Generic;using System.Text;namespace Pattern.Facade{ /// <summary> /// 用户相关类 /// </summary> public class User { /// <summary> /// 验证用户是否合法 /// </summary> /// <param name="userId">UserId</param> /// <returns></returns> public bool Validate(string userId) { if (userId == "admin") { return true; } else { return false; } } }}using System;using System.Collections.Generic;using System.Text;namespace Pattern.Facade{ /// <summary> /// Sql方式操作Message /// </summary> public class SqlMessage { /// <summary> /// 获取Message /// </summary> /// <returns></returns> public List<MessageModel> Get() { List<MessageModel> l = new List<MessageModel>(); l.Add(new MessageModel("SQL方式获取Message", DateTime.Now)); return l; } }}using System;using System.Collections.Generic;using System.Text;namespace Pattern.Facade{ /// <summary> /// Facade类 /// </summary> public class Message { private string _userId = ""; /// <summary> /// 构造函数 /// </summary> /// <param name="userId">UserId</param> public Message(string userId) { this._userId = userId; } /// <summary> /// 获取Message /// 首先使用User类的Validate()方法验证用户是否合法 /// 然后使用SqlMessage类的Get()方法获取Message /// </summary> /// <returns></returns> public List<MessageModel> Get() { User u = new User(); SqlMessage m = new SqlMessage(); if (u.Validate(_userId)) { return m.Get(); } else { List<MessageModel> l = new List<MessageModel>(); l.Add(new MessageModel("无权获取", DateTime.Now)); return l; } } }}using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using Pattern.Facade;public partial class Facade : System.Web.UI.Page{ protected void Page_Load(object sender, EventArgs e) { Message m = new Message("user"); Response.Write(m.Get()[0].Message + " " + m.Get()[0].PublishTime.ToString()); Response.Write("<br />"); m = new Message("admin"); Response.Write(m.Get()[0].Message + " " + m.Get()[0].PublishTime.ToString()); Response.Write("<br />"); }}乐在其中设计模式(C#) - 外观模式(Facade Pattern),布布扣,bubuko.com
乐在其中设计模式(C#) - 外观模式(Facade Pattern)
原文：http://www.cnblogs.com/lonelyxmas/p/3590341.html
