一步一步asp.net_三层构架的学习

总结一下现在做的项目,由于混乱的项目经验,我就全部重新写了以前的一个项目,搭建的是简单三层架构的模式,简单三层是我第一个认识的架构层次的理念,也是影响非常深的,以前只是理论的学学什么设计模式,什么mvc,但是这些根本太遥远,因为没有编码经验,没有项目经验,永远也无法体会架构之美,更有甚者,认为这些架构太复杂了,还要花时间,仍然是那种业务数据UI混合的模式,然后混杂大量的增删改查,再加上大量的ctrl+c或者ctrl+v的代码,以至于面向对象的东西,做了大半年除了封装类,没有什么跟面向对象有关系的了.....纯属面向过程+class的模式.那么什么是面向对象,这个问题,太难回答了,面向对象,简单地说就是拿人的思维去解决问题.

  人的思维是复杂的,因此,有了复杂的分工,因此我们在学习面向对象的时候更重要的是想象着,

人怎么做?

回归正题:三层构架

三层构架,说到底就是一个简单的分层概念,一个数据访问层,业务逻辑层,和UI层,而我们经常见到的,

BLL就是业务逻辑层,DAL就是数据访问层,czcraft网站就是所谓的UI层,而Model是什么呢?这和MVC的model又有什么区别?

model其实就是实体层,因为为了在BLL和DAL以及Ui层传输数据,我们要借助model这个实体层来传输数据,

比如我们注册一个帐号信息,

我们可以把所有收集到的帐号信息,保存在一个member的实体类中,然后传入给BLL处理.

BLL就是业务逻辑层,我们经常会遇到这样一个现象:

一个asp.net WebForm界面,一个事件大量的代码

这种代码,如果一百个登录是不是要复制一百份,当我们复制的第二次就要考虑怎么复用.

这时候我们想象,为什么要把这些业务写到事件中?

我们首先要做的就是第一步分离,我们可以尝试定义一个类的方式,这是第一步的分离,设计一个member类,里面封装了,member的各种字段和方法,比如登录,等等,

这是第一步的分离,这样的好处就是可以复用方法,不用复制复制再次复制,但是这样子逻辑和数据访问仍然写死在一个类中,如果我们要修改比如一个细节,

1.以前登陆都是明文,现在要加密,结果我们又要修改.

2.如果以前数据库删除一条会员信息,没有做级联删除(比如关联会员的其他信息,比如会员购买记录的信息等),现在要增加,结果又是大量的修改.

为什么我们不分理出数据和操作,以及UI显示?

我们分离出DAL,专门负责数据库操作,不管业务逻辑,BLL只负责业务逻辑,

当然为了考虑多种数据库的兼容设计,我们可以再加一层,IDAL接口层,

当然我们的数据库操作类也最好设计成兼容多种数据库的模式,

关于DAL,BLL,我就举一个实例,比如会员信息,DAL的形式就是这样,

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using czcraft.Model;
using System.Data;
using System.Data.SqlClient;
using System.Data.Common;
namespace czcraft.DAL
/*
 *   作者: Sweet
 *  创建时间: 2012/5/5 10:13:44
 *  类说明: czcraft.DAL
 */
{
     ///<summary>
     ///member表DAL
     ///</summary>
    public partial class memberDAL
    {
        DBO.DBOperator SqlHelper = DBO.DBOperator.instance();
        /// <summary>
        /// 增加member
        /// </summary>
        /// <param name="model">tableName实体</param>
        /// <returns>执行状态</returns>
        public int AddNew(member model)
        {
            string sql="insert into member(username,password,Sex,nation,mobilephone,Telephone,Email,qq,Zipcode,Address,states,VCode,VTime) output inserted.Id values(@username,@password,@Sex,@nation,@mobilephone,@Telephone,@Email,@qq,@Zipcode,@Address,@states,@VCode,@VTime)";
            int id=(int)SqlHelper.ExecuteScalar(sql
                        ,(DbParameter)new SqlParameter("username",model.username)
                        ,(DbParameter)new SqlParameter("password",model.password)
                        ,(DbParameter)new SqlParameter("Sex",model.Sex)
                        ,(DbParameter)new SqlParameter("nation",model.nation)
                        ,(DbParameter)new SqlParameter("mobilephone",model.mobilephone)
                        ,(DbParameter)new SqlParameter("Telephone",model.Telephone)
                        ,(DbParameter)new SqlParameter("Email",model.Email)
                        ,(DbParameter)new SqlParameter("qq",model.qq)
                        ,(DbParameter)new SqlParameter("Zipcode",model.Zipcode)
                        ,(DbParameter)new SqlParameter("Address",model.Address)
                        ,(DbParameter)new SqlParameter("states",model.states)
                        ,(DbParameter)new SqlParameter("VCode",model.VCode)
                        ,(DbParameter)new SqlParameter("VTime",model.VTime)
            );
            return id;
        }
        /// <summary>
        /// 更新member实体
        /// </summary>
        /// <param name="model">tableName实体</param>
        /// <returns>执行状态</returns>
        public bool Update(member model)
        {
            string sql="update member set username=@username,password=@password,Sex=@Sex,nation=@nation,mobilephone=@mobilephone,Telephone=@Telephone,Email=@Email,qq=@qq,Zipcode=@Zipcode,Address=@Address,states=@states where id=@id";
        return SqlHelper.ExecuteNonQuery(sql
                        ,(DbParameter)new SqlParameter("Id",model.Id)
                        ,(DbParameter)new SqlParameter("username",model.username)
                        ,(DbParameter)new SqlParameter("password",model.password)
                        ,(DbParameter)new SqlParameter("Sex",model.Sex)
                        ,(DbParameter)new SqlParameter("nation",model.nation)
                        ,(DbParameter)new SqlParameter("mobilephone",model.mobilephone)
                        ,(DbParameter)new SqlParameter("Telephone",model.Telephone)
                        ,(DbParameter)new SqlParameter("Email",model.Email)
                        ,(DbParameter)new SqlParameter("qq",model.qq)
                        ,(DbParameter)new SqlParameter("Zipcode",model.Zipcode)
                        ,(DbParameter)new SqlParameter("Address",model.Address)
                        ,(DbParameter)new SqlParameter("states",model.states)
                        //,(DbParameter)new SqlParameter("VCode",model.VCode)
                        //,(DbParameter)new SqlParameter("VTime",model.VTime)
            );
        }
        /// <summary>
        /// 删除member
        /// </summary>
        /// <param name="id">id</param>
        /// <returns>执行状态</returns>
        public bool Delete(int id)
        {
        return SqlHelper.ExecuteNonQuery("delete from member where id=@id",
                        (DbParameter)new SqlParameter("id",id));
        }
        /// <summary>
        /// 删除member
        /// </summary>
        /// <param name="strID">strID,记得多个用,隔开</param>
        /// <returns>执行状态</returns>
        public bool DeleteMoreID(string strID)
        {
        return SqlHelper.ExecuteNonQuery("delete from member where id in ("+strID+")");
        }
        /// <summary>
        /// 将DataRow转化为Model实体
        /// </summary>
        /// <param name="row">DataRow信息</param>
        /// <returns>执行状态</returns>
        private static member ToModel(DataRow row)
        {
            member model=new member();
            model.Id =row.IsNull("Id")?null:(System.Int32?)row["Id"];
            model.username =row.IsNull("username")?null:(System.String)row["username"];
            model.password =row.IsNull("password")?null:(System.String)row["password"];
            model.Sex =row.IsNull("Sex")?null:(System.String)row["Sex"];
            model.nation =row.IsNull("nation")?null:(System.String)row["nation"];
            model.mobilephone =row.IsNull("mobilephone")?null:(System.String)row["mobilephone"];
            model.Telephone =row.IsNull("Telephone")?null:(System.String)row["Telephone"];
            model.Email =row.IsNull("Email")?null:(System.String)row["Email"];
            model.qq =row.IsNull("qq")?null:(System.String)row["qq"];
            model.Zipcode =row.IsNull("Zipcode")?null:(System.String)row["Zipcode"];
            model.Address =row.IsNull("Address")?null:(System.String)row["Address"];
            model.states =row.IsNull("states")?null:(System.String)row["states"];
            model.VCode =row.IsNull("VCode")?null:(System.String)row["VCode"];
            model.VTime =row.IsNull("VTime")?null:(System.DateTime?)row["VTime"];
            return model;
        }
        /// <summary>
        /// 根据id获取tableName实体信息
        /// </summary>
        /// <param name="id">id</param>
        /// <returns>执行状态</returns>
        public member Get(int id)
        {
            DataTable dt=SqlHelper.ExecuteDataTable("select * from member where id=@id",
(DbParameter)new SqlParameter("id",id));
            if(dt.Rows.Count>1){
            throw new Exception("more than 1 row was found");
            }
            if(dt.Rows.Count<=0){return null;}
            DataRow row=dt.Rows[0];
            member model=ToModel(row);
            return model;
        }
        /// <summary>
        /// 列出tableName所有的实体信息
        /// </summary>
        /// <returns>执行状态</returns>
        public IEnumerable<member> ListAll()
        {
            List<member> list=new List<member>();
            DataTable dt=SqlHelper.ExecuteDataTable("select * from member");
            foreach(DataRow row in dt.Rows){
            list.Add(ToModel(row));
            }
            return list;
        }

        /// <summary>
        ///分页获取数据
        /// </summary>
        /// <param name="tableName">表名</param>
        /// <param name="InnerJoin">内连接</param>
        /// <param name="strGetFields">返回的列信息</param>
         /// <param name="sortId">排序的列名</param>
        /// <param name="PageSize">每页记录数</param>
        /// <param name="PageIndex">页数</param>
        /// <param name="OrderType">排序类型排序类型, 非0 值则降序</param>
        /// <param name="strWhere">查询条件(注意: 不要加where) </param>
        public IEnumerable<member> ListByPagination(string tableName,string InnerJoin,string strGetFields,string sortId,int PageSize,int PageIndex,string OrderType,string strWhere)
        {
            List<member> list=new List<member>();
            DataTable dt=SqlHelper.ExecuteDataTable("exec[pagination]  @tableName,@InnerJoin,@strGetFields,@sortId,@PageSize,@PageIndex,@doCount,@OrderType,@strWhere",(DbParameter)new SqlParameter("tableName",tableName),(DbParameter)new SqlParameter("@InnerJoin",InnerJoin),(DbParameter)new SqlParameter("@strGetFields",strGetFields),(DbParameter)new SqlParameter("@sortId",sortId),(DbParameter)new SqlParameter("@PageSize",PageSize),(DbParameter)new SqlParameter("@PageIndex",PageIndex),(DbParameter)new SqlParameter("@doCount","0"),(DbParameter)new SqlParameter("@OrderType",OrderType),(DbParameter)new SqlParameter("@strWhere",strWhere));
            foreach(DataRow row in dt.Rows){
            list.Add(ToModel(row));
            }
            return list;
        }
        /// <summary>
        ///获取表总记录个数(不用加where)
        /// <param name="strWhere">查询条件(不用加where)</param>
        /// <summary>
        public int GetCount(string strWhere)
        {
            if(!string.IsNullOrEmpty(strWhere))
            strWhere=" where "+strWhere;
            return SqlHelper.ExecuteSelectFirstNum("select count(1) from member"+strWhere);
        }
    }
}

这里是用代码生成器生成的,我自己写的一个简单的代码生成器,为了学习代码生成器,专门设计了一个简单的,

这里注意,因为代码生成器的原因,我们必须把自己写的方法等,通过部分类的方式合并,所以,我们都要加上partial 关键字,这很重要

可以看到DAL主要涉及的都是纯种的增删改查操作,他不用管具体有没有权限之类的,这些不是

他的活,为什么要他干?

接下来就是BLL层,业务逻辑层,我们经常碰到,前期不需要功能,后期增加进去,以前没有权限判断,以前没有加密要求,以前的加密太简单,现在要更改一种更好的方法,结果要修改好多东西,这样就全部写在业务逻辑层,他只负责业务逻辑的判断,然后提供给UI数据,

 /// <summary>
        /// 判定查询条件
        /// </summary>
        /// <param name="info"></param>
        /// <returns></returns>
        public static string ConfirmCondition(string info)
        {
            string condition = "";//查询条件
            if (Tools.IsNumber(info)) //如果是数字,则查询id
            {
                condition = "id like '%" + info + "%'";
            }
            else condition = "username like '%" + info + "%'"; //查询用户名
            return condition;
        }
        /// <summary>
        /// 检查用户名和邮箱
        /// </summary>
        /// <param name="UserName">用户名</param>
        /// <param name="Email">邮箱</param>
        /// <returns></returns>
        public bool CheckUserNameAndEmail(string UserName,string Email)
        {
            memberDAL dal=new memberDAL ();
            member info = dal.GetMemberInfo(UserName);
            return Email==info.Email;
        }
        /// <summary>
        /// 随机生成一个6位的密码
        /// </summary>
        /// <returns></returns>
        public string CreateNewPwd()
        {
            string Pwd="";
            Random ran=new Random (DateTime.Now.Second);
            for (int i = 0; i < 6; i++)
            {
                Pwd += ran.Next(1, 10);
            }
            return Pwd;
        }
        /// <summary>
        /// 修改密码
        /// </summary>
        /// <param name="UserName">用户名</param>
        /// <param name="Pwd">密码</param>
        /// <returns></returns>
        public bool UpdatePwd(string UserName, string Pwd)
        {
            return new memberDAL().UpdatePassword(UserName, Tools.GetMD5(Pwd));
        }
        /// <summary>
        /// 修改密码
        /// </summary>
        /// <param name="UserName">用户名</param>
        /// <param name="oldPwd">旧密码</param>
        /// <param name="newPwd">新密码</param>
        /// <returns></returns>
        public bool UpdatePassword(string UserName, string oldPwd, string newPwd)
        {
            memberDAL dal = new memberDAL();
            string Pwd = dal.GetPassword(UserName);
            if (Pwd == Tools.GetMD5(oldPwd))
            {
                //加密并且更新
               return dal.UpdatePassword(UserName, Tools.GetMD5(newPwd));
            }
            return false;
        }
         /// <summary>
        /// 更新member实体
        /// </summary>
        /// <param name="model">member实体</param>
        /// <param name="IsUserNameUpdate">是否采用用户名更新</param>
        /// <returns></returns>
        public bool UpdateUserInfo(member model)
        {
           return new memberDAL().Update(model, true);
        }
        /// <summary>
        /// 检验用户名是否存在
        /// </summary>
        /// <param name="userName"></param>
        /// <returns></returns>
        public bool CheckExistUserName(string userName)
        {
            return new memberDAL().GetCount(string.Format(" username='{0}'", userName)) == 0;
        }
        /// <summary>
        /// 验证用户信息
        /// </summary>
        /// <param name="UserName">用户名</param>
        /// <param name="GuidInfo">guid随机码</param>
        public bool ActivationMemberNumber(string UserName, string GuidInfo)
        {
            memberDAL dal = new memberDAL();
            //获取过期时间
            DateTime dt = dal.GetMemberVTime(UserName, GuidInfo);
            //如果已经过期
            if (dt < DateTime.Now)
            {
                return false;
            }
            else
            {
                //激活帐号
               return  dal.ActivationMemberStatus(UserName);
            }
        }
        /// <summary>
        /// 用户登录
        /// </summary>
        /// <param name="info">会员model</param>
        /// <returns></returns>
        public bool MemberLogin(member info)
        {
            info.password = Tools.GetMD5(info.password);
            return new memberDAL().MemberLogin(info);
        }
        /// <summary>
        /// 检验密码是否正确
        /// </summary>
        /// <param name="UserName">用户名</param>
        /// <param name="Password">密码</param>
        /// <returns></returns>
        public bool CheckPwd(string UserName, string Password)
        {
            //先不加密,以后全部都要加密
            string Pwd = Tools.GetMD5(new memberDAL().GetPassword(UserName));
            if (Password == Pwd)
            {
                return true;
            }
            else
                return false;
        }
        /// <summary>
        /// 返回验证组件的数组格式(Validate)
        /// </summary>
        /// <param name="fieldId">字段</param>
        /// <param name="Status">状态</param>
        /// <param name="errorMsg">错误消息(没有则"")</param>
        /// <returns></returns>
        public string ReturnValueValidateAjax(string fieldId, bool Status, string errorMsg)
        {

            if (string.IsNullOrEmpty(errorMsg))
            {
                return "[\"" + fieldId + "\",\"" + Status + "\"]";
            }
            return "[\"" + fieldId + "\",\"" + Status + "\",\""+errorMsg+"\"]";

        }

        /// <summary>
        /// 返回给客户端的json格式数据(用于根据用户登录状态决定)
        /// </summary>
        /// <param name="info"></param>
        /// <returns></returns>
        public string ReturnJson(member info, out bool Status)
        {
            //登录状态
            Status = MemberLogin(info);
            //生成json格式数据
            return WriteJsonForReturn(Status, info.username);

        }
        /// <summary>
        /// 记住帐号和密码的枚举
        /// </summary>
        public enum RememberType
        {
            /// <summary>
            /// 记住帐号
            /// </summary>
            RememberName = 0,
            /// <summary>
            /// 同时记住帐号和密码
            /// </summary>
            RememberNameAndPwd = 1,
            /// <summary>
            /// 不记住帐号密码
            /// </summary>
            NoRemember = 2
        }

        /// <summary>
        /// 根据保存帐号密码状态判断是保存帐号还是同时保存帐号和密码
        /// </summary>
        /// <param name="IsSaveName">"1"代表保存,"0"代表不保存</param>
        /// <param name="IsSavePwd">"1"代表保存,"0"代表不保存</param>
        /// <returns></returns>
        public RememberType GetRememberType(string IsSaveName, string IsSavePwd)
        {
            RememberType SaveType = RememberType.NoRemember;

            //保存帐号和密码
            if (IsSaveName.Equals("1") && IsSavePwd.Equals("1"))
            {
                SaveType = RememberType.RememberNameAndPwd;
            }
            //保存帐号
            if (IsSaveName.Equals("1") && !IsSavePwd.Equals("1"))
            {
                SaveType = RememberType.RememberName;
            }
            else if (!IsSaveName.Equals("1"))
            {
                SaveType = RememberType.NoRemember;
            }
            return SaveType;
        }
        /// <summary>
        /// 根据用户名获取用户信息(返回json数据)
        /// </summary>
        /// <param name="UserName">用户名</param>
        /// <returns></returns>
        public string GetMemberInfoByJson(string UserName)
        {
            bool Status = false;
            member info = new memberDAL().GetMemberInfo(UserName);
            if (info.Id.HasValue)
            {
                Status = true;
            }
            StringBuilder json = new StringBuilder();
            StringWriter sw = new StringWriter(json);
            using (JsonWriter jsonWriter = new JsonTextWriter(sw))
            {
                jsonWriter.Formatting = Formatting.Indented;
                jsonWriter.WriteStartObject();
                jsonWriter.WritePropertyName("Status");
                jsonWriter.WriteValue(Status);
                jsonWriter.WritePropertyName("Data");
                jsonWriter.WriteStartArray();
                jsonWriter.WriteStartObject();
                jsonWriter.WritePropertyName("UserName");
                jsonWriter.WriteValue(info.username);
                jsonWriter.WritePropertyName("Sex");
                jsonWriter.WriteValue(info.Sex);
                jsonWriter.WritePropertyName("Nation");
                jsonWriter.WriteValue(info.nation);
                //mobilephone Telephone Email qq Zipcode Address
                jsonWriter.WritePropertyName("MobilePhone");
                jsonWriter.WriteValue(info.mobilephone);
                jsonWriter.WritePropertyName("TelePhone");
                jsonWriter.WriteValue(info.Telephone);
                jsonWriter.WritePropertyName("Email");
                jsonWriter.WriteValue(info.Email);
                jsonWriter.WritePropertyName("QQ");
                jsonWriter.WriteValue(info.qq);
                jsonWriter.WritePropertyName("ZipCode");
                jsonWriter.WriteValue(info.Zipcode);
                //地址处理

                string[] strAddresss = GetSplitAddress(info.Address);
                string Province = "";
                string City = "";
                string Country = "";
                string Address = "";
                if (strAddresss.Count() > 0)
                {
                    Province = strAddresss[0];
                    City = strAddresss[1];
                    Country = strAddresss[2];
                    Address = strAddresss[3];

                }
                jsonWriter.WritePropertyName("Province");
                jsonWriter.WriteValue(Province);
                jsonWriter.WritePropertyName("City");
                jsonWriter.WriteValue(City);
                jsonWriter.WritePropertyName("Country");
                jsonWriter.WriteValue(Country);
                jsonWriter.WritePropertyName("Address");
                jsonWriter.WriteValue(Address);
                jsonWriter.WriteEndObject();

                jsonWriter.WriteEndArray();
                jsonWriter.WriteEndObject();
            }
            return json.ToString();
        }
        /// <summary>
        /// 地址分割(将用户信息表中的地址分割成 省(编号) 市(编号) 县(编号) 家住址
        /// </summary>
        /// <param name="Address">地址</param>
        /// <returns></returns>
        public string[] GetSplitAddress(string Address)
        {
            string[] str = Address.Split('|');
            return str;
        }
        /// <summary>
        /// 检查用户登录状态,用于验证自动登录(并返回json格式)
        /// </summary>
        /// <returns></returns>
        public string CheckLoginStatus(out bool Status)
        {

            //登录状态
            Status = true;
            string UserName = Common.CookieHelper.GetCookieValue("UserName");
            //如果cookies为空,直接返回
            if (Tools.IsNullOrEmpty(UserName))
            {
                Status = false;
            }
            string Pwd = Common.CookieHelper.GetCookieValue("Pwd");
            if (Tools.IsNullOrEmpty(Pwd))
            {
                Status = false;
            }
            else
            {
                //查找该用户真实密码,并进行md5加密
                string password = new memberDAL().GetPassword(UserName);
                //如果两次密码相同则可以自动登陆了
                if (password!=Pwd)
                {
                    Status = false;
                }
            }

            //生成json格式数据
            return WriteJsonForReturn(Status, UserName);
        }
        /// <summary>
        /// 为用户登录写入json数据
        /// </summary>
        /// <param name="Status">登录状态</param>
        /// <param name="UserName">用户名</param>
        /// <returns></returns>
        public string WriteJsonForReturn(bool Status, string UserName)
        {
            StringBuilder json = new StringBuilder();
            StringWriter sw = new StringWriter(json);
            using (JsonWriter jsonWriter = new JsonTextWriter(sw))
            {
                jsonWriter.Formatting = Formatting.Indented;
                jsonWriter.WriteStartObject();
                jsonWriter.WritePropertyName("Status");
                jsonWriter.WriteValue(Status);
                jsonWriter.WritePropertyName("UserName");
                jsonWriter.WriteValue(UserName);
                jsonWriter.WriteEndObject();
            }
            return json.ToString();
        }
        /// <summary>
        /// 记住用户信息
        /// </summary>
        /// <param name="Type">记住用户信息类别</param>
        /// <returns></returns>
        public bool RememberUserInfo(member info, RememberType type)
        {
            if (type == RememberType.RememberName)
            {
                //记住帐号7天
                CookieHelper.SetCookie("UserName", info.username, DateTime.Now.AddDays(7));
            }
            else if (type == RememberType.RememberNameAndPwd)
            {

                //md5哈希加密
                string sercret = Tools.GetMD5(info.password);
                //同时记住帐号和密码7天
                CookieHelper.SetCookie("UserName", info.username, DateTime.Now.AddDays(7));
                CookieHelper.SetCookie("Pwd", sercret, DateTime.Now.AddDays(7));
            }
            else
            {
                return false;
            }
            return true;

        }


    }
}

可以看到,这里没有任何数据库的操作,他只负责业务逻辑判断,然后给UI提供数据.

而web的UI层,我们以前经常性碰到这样的代码,

  /// <summary>
    /// 网页中间显示的涵数condiction显示条件，nums显示行数
    /// </summary>
    /// <param name="condiction"></param>
    /// <param name="nums"></param>
    public void Show(string condiction, int nums)
    {

        string sql = "";
        //还要修改
        string id = "";
        string picturepath = "";
        string name = "";
        string appreciation = "";
        string reward = "";
        string title = "";
        string time = "";
        string ArticleHtmlUrl = "";
        StringBuilder content = new StringBuilder();//高效率拼接字符串
        if (condiction == "大师风采")
        {
            sql = "select top " + nums + " hit,id,name,appreciation,Reward,Picturepath from master  where state='1' and state1='1' order by master.rank desc";
            DataTable dt = cs.GetDataSet(sql).Tables[0];


            for (int i = 0; i < dt.Rows.Count; i++)
            {
               id = dt.Rows[i]["id"].ToString();
               picturepath = dt.Rows[i]["Picturepath"].ToString();
                picturepath = GetPicturePath(picturepath);
               name = dt.Rows[i]["name"].ToString();

               //appreciation = GetTile(dt.Rows[i]["appreciation"].ToString().Replace("<br>","\r\n"));
               //reward = GetTile(dt.Rows[i]["Reward"].ToString().Replace("<br>", "\r\n"));
                if (i == 0) {
                    content.Append("<div class='r_s_p m_border'>");
                }
                else
                {
                    content.Append("<div class='r_s_p'>");
                }
                    content.Append("<div class='gk_pic'><img src='" + picturepath + "' alt='" + dt.Rows[i]["name"].ToString() + "'/></div>");

                content.Append("<div class='master_p'>");

                content.Append("<p><strong><a href='Masterintro.aspx?id=" + id + "'>" + name + "</a></strong></p>");

                content.Append("<div class='honor'><ul>");

                content.Append("<li><a href='Masterintro.aspx?id=" + id + "'>" + appreciation + "</a></li>");

                content.Append("<li><a href='Masterintro.aspx?id=" + id + "'>" + reward + "</a></li>");
                content.Append("</ul></div></div></div>");

                content.Append("<div class='master_border'>&nbsp;</div>");

            }

            Response.Write(content.ToString());
            return;

        }




        if (condiction == "业内新闻")
        {
            sql = "select top " + nums + " id,title,time,ArticleHtmlUrl from news order by time desc";
            DataTable dt = cs.GetDataSet(sql).Tables[0];
            //if (dt.Rows.Count == 0)
            //{
            //    content.Append("<li><a href='#'>#</a><span class='time'>[##-##-##]</span></li>");
            //}
            for (int i = 0; i < dt.Rows.Count; i++)
            {

               title = GetTile(dt.Rows[i]["title"].ToString());

                id = dt.Rows[i]["id"].ToString();

                time = ((DateTime)dt.Rows[i]["time"]).Date.ToShortDateString();

                ArticleHtmlUrl = dt.Rows[i]["ArticleHtmlUrl"].ToString();

                content.Append("<li><a href='NewsContent.aspx?id="+id+"'>" + title + "</a><span class='time'>[" + time + "]</span></li>");

            }
            Response.Write(content.ToString());

            return;

        }
        if (condiction == "工艺知识")
        {

            sql = "select top " + nums + " id,title,time,ArticleHtmlUrl from craftknowledge order by time desc";

            DataTable dt = cs.GetDataSet(sql).Tables[0];

            //if (dt.Rows.Count == 0)
            //{
            //    content.Append("<li><a href='#'>#</a><span class='time'>[##-##-##]</span></li>");
            //}
            for (int i = 0; i < dt.Rows.Count; i++)
            {

               title = GetTile(dt.Rows[i]["title"].ToString());

                id = dt.Rows[i]["id"].ToString();

                time = ((DateTime)dt.Rows[i]["time"]).Date.ToShortDateString();

                ArticleHtmlUrl = dt.Rows[i]["ArticleHtmlUrl"].ToString();

                //Response.Write("<li><a href='craftknowledge_info.aspx?craft_id=" + id + "'>" + title + "</a><span class='time'>[" + time + "]</span></li>");

                content.Append("<li><a href='craftknowledge_info.aspx?id=" + id + "'>" + title + "</a><span class='time'>[" + time + "]</span></li>");

            }
            Response.Write(content.ToString());
            return;

        }

        if (condiction == "企业展示")
        {
            sql = "select top " + nums + " hit, id,name from company where state='1' and state1='1' order by company.rank desc";

            DataTable dt = cs.GetDataSet(sql).Tables[0];
            //if (dt.Rows.Count == 0)
            //{
            //    content.Append("<li><a href='#'>#</a></li>");
            //}
            for (int i = 0; i < dt.Rows.Count; i++)
            {
               id = dt.Rows[i]["id"].ToString();

               name = GetTile(dt.Rows[i]["name"].ToString());



               content.Append("<li><a href='company_introduce.aspx?id=" + id + "'>" + name + "</a></li>");

            }
            Response.Write(content.ToString());
            return;

        }
    }

这种UI和数据混合的方式,如果界面一修改,改动大了,经常性碰到,这个界面太囧了......然后改整个版面,为什么我们不把数据和UI隔离开来,后台么?

只负责数据提供,通过JSON等传输,然后前台js/JQuery操作界面呢?

这样前台就应该这样,

<%@ Page Language="C#" MasterPageFile="~/InfoPage.master" AutoEventWireup="true"
    CodeFile="MasterInfo.aspx.cs" Inherits="Master_MasterInfo" Title="大师信息" %>

<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="Server">
    <link href="../css/gs_ms.css" rel="stylesheet" type="text/css" />

    <script src="../Admin/scripts/jquery-1.7.1.min.js" type="text/javascript"></script>

    <script src="../js/queryUrlParams.js" type="text/javascript"></script>

    <script src="MasterInfo.js" type="text/javascript"></script>


    <script type="text/javascript">
   //获得大师id信息
     var id=$.query.get("MasterId");
    </script>

</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">
    <div class="ms">
        <div class="ms_top">
            <div class="m_load">
                <span><a href="../Default.aspx">首页</a> > <a href="MasterList.aspx">大师风采</a> > 大师</span></div>
            <div class="mst_c">
                <ul class="mst_ul">
                    <li><a href="#" id="Master_Intro">
                        <p class="hide">
                            大师简介</p>
                    </a></li>
                    <li><a href="#" id="Master_Award">
                        <p class="hide">
                            获奖情况</p>
                    </a></li>
                    <li><a href="#" id="Master_Work">
                        <p class="hide">
                            大师作品</p>
                    </a></li>
                </ul>
                <div class="mst_img">
                    <img src="../images/master_img.png" id="imgMaster" /></div>
                <div class="mst_xx">
                    <table width="252" height="141" id="tbMasterInfo">
                    </table>
                </div>
            </div>
        </div>
        <div class="gs_nr" id="MasterContent">

        </div>
    </div>
</asp:Content>

然后通过jquery操作,

     $(function(){
     GetMasterInfo();
     GetMasterIntro();
     //绑定获取大师简介事件
     $("#Master_Intro").click(function(){
     GetMasterIntro();
     });
     $("#Master_Award").click(function(){
     GetMasterReward();
     });
     $("#Master_Work").click(function(){
     GetMasterWork();
     });
     });
    //获取大师基本信息
    function GetMasterInfo(){
    $.ajax({
    url:"Data/MasterInfo.ashx?method=GetMasterInfo&MasterId="+id,
    type:"post",
    success:function(text){
     var jsonData=$.parseJSON(text);
     if(jsonData.Status){
      var item='<tr><td width="51"> 姓名：</td>';
      item+=' <td width="92">'+jsonData.Data[0].Name+'</td>';
      item+='<td width="47">性别: </td>';
      item+='<td width="42">'+jsonData.Data[0].Sex+'</td>';
      item+=' </tr>';
      item+='<tr> <td> 出生：</td>';
      item+='<td>'+jsonData.Data[0].Birthday+'</td>';
      item+='</tr>';
      item+=' <tr><td colspan="4">艺术家分类：';
      item+=jsonData.Data[0].TypeName;
      item+='</td></tr>';

      $("#tbMasterInfo").empty();
      $("#tbMasterInfo").append(item);
        var src="../Admin/FileManage/GetImg.ashx?method=GetMasterPic&type=medium&fileName="+jsonData.Data[0].PicturePath;
      $("#imgMaster").attr("src",src);
     }
    }
    });

    }
    //获取大师简介信息
     function GetMasterIntro(){
      $.ajax({
    url:"Data/MasterInfo.ashx?method=GetMasterIntro&MasterId="+id,
    type:"post",
    success:function(text){
      var jsonData=$.parseJSON(text);
     if(jsonData.Status){
       var item='<h4>大师简介</h4>';
       item+='<p>'+jsonData.Data[0].Introduction+'</p>';
      $("#MasterContent").empty();
      $("#MasterContent").append(item);
       }
      }
      });
     }
     //获取大师荣誉信息
     function GetMasterReward(){
  $.ajax({
    url:"Data/MasterInfo.ashx?method=GetMasterReward&MasterId="+id,
    type:"post",
    success:function(text){
      var jsonData=$.parseJSON(text);
      var item='<h4>大师荣誉</h4>';
     if(jsonData.Status){
       item+='<ul class="gs_reward">';
       item+=' <li>'+jsonData.Data[0].Reward+'</li></ul>';
       item+=' <h4>获奖情况</h4><ul class="gs_cup">';
      $.each(jsonData.Data[0].CertPicList,function(key,value){
        var img="../Admin/FileManage/GetImg.ashx?method=GetMasterCert&type=medium&fileName="+value.CertPic;
      item+='<li><span class="c_pic_a">';
     item+='<img src='+img+' alt='+value.CertName+' title='+value.CertName+'/></span><span class="a_title">'+value.CertName+'</span>';
      item+='</li>';
      });
      item+='</ul>';

       }
       else{
        item+=' <h4>获奖情况</h4>';
       }
        $("#MasterContent").empty();
      $("#MasterContent").append(item);
      }
      });
     }
     //获取大师产品信息
  function GetMasterWork(){
  $.ajax({
    url:"Data/MasterInfo.ashx?method=GetMasterWork&MasterId="+id,
    type:"post",
    success:function(text){
      var jsonData=$.parseJSON(text);
     var item='';
     if(jsonData.Status){
     $.each(jsonData.Data,function(key,value){
       item+='<h4>'+value.TypeName+'</h4>';
       item+='<ul class="gs_pic">';
         $.each(value.Product,function(PKey,PValue){
               var img="../Admin/FileManage/GetImg.ashx?method=GetMainProductPic&type=medium&fileName="+PValue.Picturepath;
               item+='<li>';
                  item+='<a href="../Product/Product.aspx?ProductId='+PValue.ProductId+'" class="c_pic_a"><img src="'+img+'" alt="'+PValue.Name+'" title="'+PValue.SimpleName+'"/></a>';
                  item+='<a href="../Product/Product.aspx?ProductId='+PValue.ProductId+'" class="a_title">'+PValue.SimpleName+'<br/><span class="rad2">￥'+PValue.Lsprice+'</span></a> ';
               item+='</li>';
                             })
       item+='</ul>';
       item+='<div style="text-align:right"><a href="../Product/Master_MoreProduct.aspx?MasterId=' + id + '&&TypeId=' + value.TypeId + '">more>></a></div>';

       })

      }
      else{
      item+='没有数据!';
      }
        $("#MasterContent").empty();
      $("#MasterContent").append(item);
      }
      });
     }

这样不管怎么改界面,我们的数据是不变的,哈哈!

还有最最最重要的,我们的代码规范,命名规范,我的所有代码全部自己强制性要求自己必须遵

守,所以才能一目了然,清晰,严谨,易于维护和开发!

今天的三层就总结到这里!

还有项目中比较重要的一些东西,下次在总结!