asp.net一个带抽象工厂的三层架构完整实例

本文不是原创，根据http://www.cnblogs.com/cresuccess/archive/2008/12/10/1351675.html改编，实现了增删改查、返回数据功能。在vs2010+sql2008Express下实现。

本实例主要完成对一个newsTable表的更删改查操作，包括DBUtility、Model、IDAL、SQLServerDAL、DALFactoty、BLL和一个Web网站共7个项目。建立后的截图。

一、数据库

/*==============================================================*/
/* DBMS name: Microsoft SQL Server 2008 */
/*==============================================================*/

if exists (select 1
from sysobjects
where id = object_id('newsContent')
and type = 'U')
drop table newsContent
go

/*==============================================================*/
/* Table: newsContent */
/*==============================================================*/
create table newsContent (
ID int identity(1,1) primary key,
Title varchar(100) not null,
Contents varchar(1000) not null,
AddDate datetime not null,)
go

二、项目文件架构

实现步骤为：4-3-6-5-2-1

ID	项目	描述	用途	项目引用关系	实例所需文件	相关方法
1	Web	表现层	Web页和控件	引用BLL	WebUI.aspx WebUI.aspx.cs	GetContent()
2	BLL	业务逻辑层	业务逻辑组件	引用 IDAL，Model，使用DALFactory创建实例	Content.cs	ContentInfo GetContentInfo(int id)
3	IDAL	数据访问层接口定义	每个DAL实现都要实现的一组接口	引用 Model	IContent.cs	ContentInfo GetContentInfo(int id)
4	Model	业务实体	传递各种数据的容器	无引用	ContentInfo.cs
5	DALFactory	数据层的抽象工厂	创建反射，用来确定加载哪一个数据库访问程序集的类	引用IDAL，通过读取web.config里设置的程序集，加载类的实例，返回给BLL使用。	Content.cs	IDAL.Icontent create()
6	SQLServerDAL	SQLServer数据访问层	Microsoft SQL Server特定的Pet Shop DAL实现，使用了IDAL接口	引用 Model和IDAL，被DALFactory加载的程序集，实现接口里的方法。	SqlHelper.cs Content.cs	SqlDataReader ExecuteReader() PrepareCommand() ContentInfo GetContentInfo(int id)
6	OracleDAL	Oracle数据访问层	Microsoft SQL Server特定的Pet Shop DAL实现，使用了IDAL接口	引用 Model和IDAL，被DALFactory加载的程序集，实现接口里的方法。	SqlHelper.cs Content.cs
7	DBUtility	数据库访问组件基础类	微软的经典PETSHOP中的SQLHELPER，这个是可有可无的，也可以自己定义一个，	无引用

实现步骤过程

1、创建Model，实现业务实体。

2、创建IDAL，实现接口。

3、创建SQLServerDAL，实现接口里的方法。

4、增加web.config里的配置信息，为SQLServerDAL的程序集。

5、创建DALFactory，返回程序集的指定类的实例。

6、创建BLL，调用DALFactory，得到程序集指定类的实例，完成数据操作方法。

7、创建WEB，调用BLL里的数据操作方法。

注意：

1、web.config里的程序集名称必须与SQLServerDAL里的输出程序集名称一致。

2、DALFactory里只需要一个DataAccess类，可以完成创建所有的程序集实例。

3、项目创建后，注意修改各项目的默认命名空间和程序集名称。

4、注意修改解决方案里的项目依赖。

5、注意在解决方案里增加各项目引用。

三、各层间的访问过程

1、传入值，将值进行类型转换(为整型)。

2、创建BLL层的content.cs对象c，通过对象c访问BLL层的方法GetContentInfo(ID)调用BLL层。

3、BLL层方法GetContentInfo(ID)中取得数据访问层SQLServerDAL的实例,实例化IDAL层的接口对象dal，这个对象是由工厂层DALFactory创建的，然后返回IDAL层传入值所查找的内容的方法dal.GetContentInfo(id)。

4、数据工厂通过web.config配置文件中给定的webdal字串访问SQLServerDAL层，返回一个完整的调用SQLServerDAL层的路径给 BLL层。

5、到此要调用SQLServerDAL层，SQLServerDAL层完成赋值Model层的对象值为空，给定一个参数，调用SQLServerDAL层的SqlHelper的ExecuteReader方法,读出每个字段的数据赋值给以定义为空的Model层的对象。

6、SqlHelper执行sql命令，返回一个指定连接的数据库记录集，在这里需要引用参数类型，提供为打开连接命令执行做好准备PrepareCommand。

7、返回Model层把查询得到的一行记录值赋值给SQLServerDAL层的引入的Model层的对象ci，然后把这个对象返回给BLL。

8、回到Web层的BLL层的方法调用,把得到的对象值赋值给Lable标签，在前台显示给界面

四、文件源程序

1、DBUtility项目

SQLHelper.cs 引用 System.Configuration命名空间

using System;

using System.Configuration;

using System.Data;

using System.Data.SqlClient;

using System.Collections;

using System.Configuration;

namespace DBUtility

{

/// <summary>

/// SqlHelper类¤¨¤是º?专Á¡§门?提¬¨¢供?给?广?大ä¨®用®?户¡ì用®?于®¨²高?性?能¨¹、¡é可¨¦升¦y级?和¨ª最Á?佳?练¢¡¤习¡ã的Ì?sql数ºy据Y操¨´作Á¡Â

/// </summary>

public abstract class SqlHelper {

//数ºy据Y库a连¢?接¨®字Á?符¤?串ä?

public static readonly string sConnetinString = ConfigurationManager.ConnectionStrings["newsConnectionString"].ConnectionString;

// 用®?于®¨²缓o存ä?参?数ºy的Ì?HASH表À¨ª

private static Hashtable parmCache = Hashtable.Synchronized(new Hashtable());

/// <summary>

/// 给?定¡§连¢?接¨®的Ì?数ºy据Y库a用®?假¨´设¦¨¨参?数ºy执¡ä行D一°?个?sql命¨¹令¢?（ê¡§不?返¤¦Ì回?数ºy据Y集¡¥）ê?

/// </summary>

/// <param name="connectionString">一°?个?有®D效¡ì的Ì?连¢?接¨®字Á?符¤?串ä?</param>

/// <param name="commandType">命¨¹令¢?类¤¨¤型¨ª(存ä?储ä¡é过y程¨¬, 文?本À?, 等Ì¨¨等Ì¨¨)</param>

/// <param name="commandText">存ä?储ä¡é过y程¨¬名?称?或¨°者?sql命¨¹令¢?语®?句?</param>

/// <param name="commandParameters">执¡ä行D命¨¹令¢?所¨´用®?参?数ºy的Ì?集¡¥合?</param>

/// <returns>执¡ä行D命¨¹令¢?所¨´影®¡ã响¨¬的Ì?行D数ºy</returns>

public static int ExecuteNonQuery(string connectionString, CommandType cmdType, string cmdText, params SqlParameter[] commandParameters) {

SqlCommand cmd = new SqlCommand();

using (SqlConnection conn = new SqlConnection(connectionString)) {

PrepareCommand(cmd, conn, null, cmdType, cmdText, commandParameters);

int val = cmd.ExecuteNonQuery();

cmd.Parameters.Clear();

return val;

}

/// <summary>

/// 用®?现?有®D的Ì?数ºy据Y库a连¢?接¨®执¡ä行D一°?个?sql命¨¹令¢?（ê¡§不?返¤¦Ì回?数ºy据Y集¡¥）ê?

/// </summary>

/// <param name="conn">一°?个?现?有®D的Ì?数ºy据Y库a连¢?接¨®</param>

/// <param name="commandType">命¨¹令¢?类¤¨¤型¨ª(存ä?储ä¡é过y程¨¬, 文?本À?, 等Ì¨¨等Ì¨¨)</param>

/// <param name="commandText">存ä?储ä¡é过y程¨¬名?称?或¨°者?sql命¨¹令¢?语®?句?</param>

/// <param name="commandParameters">执¡ä行D命¨¹令¢?所¨´用®?参?数ºy的Ì?集¡¥合?</param>

/// <returns>执¡ä行D命¨¹令¢?所¨´影®¡ã响¨¬的Ì?行D数ºy</returns>

public static int ExecuteNonQuery(SqlConnection connection, CommandType cmdType, string cmdText, params SqlParameter[] commandParameters) {

SqlCommand cmd = new SqlCommand();

PrepareCommand(cmd, connection, null, cmdType, cmdText, commandParameters);

int val = cmd.ExecuteNonQuery();

cmd.Parameters.Clear();

return val;

}

/// <summary>

///使º1用®?现?有®D的Ì?SQL事º?务?执¡ä行D一°?个?sql命¨¹令¢?（ê¡§不?返¤¦Ì回?数ºy据Y集¡¥）ê?

/// </summary>

/// <remarks>

///举¨´例¤y:

/// int result = ExecuteNonQuery(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));

/// </remarks>

/// <param name="trans">一°?个?现?有®D的Ì?事º?务?</param>

/// <param name="commandType">命¨¹令¢?类¤¨¤型¨ª(存ä?储ä¡é过y程¨¬, 文?本À?, 等Ì¨¨等Ì¨¨)</param>

/// <param name="commandText">存ä?储ä¡é过y程¨¬名?称?或¨°者?sql命¨¹令¢?语®?句?</param>

/// <param name="commandParameters">执¡ä行D命¨¹令¢?所¨´用®?参?数ºy的Ì?集¡¥合?</param>

/// <returns>执¡ä行D命¨¹令¢?所¨´影®¡ã响¨¬的Ì?行D数ºy</returns>

public static int ExecuteNonQuery(SqlTransaction trans, CommandType cmdType, string cmdText, params SqlParameter[] commandParameters) {

SqlCommand cmd = new SqlCommand();

PrepareCommand(cmd, trans.Connection, trans, cmdType, cmdText, commandParameters);

int val = cmd.ExecuteNonQuery();

cmd.Parameters.Clear();

return val;

}

/// <summary>

/// 用®?执¡ä行D的Ì?数ºy据Y库a连¢?接¨®执¡ä行D一°?个?返¤¦Ì回?数ºy据Y集¡¥的Ì?sql命¨¹令¢?

/// </summary>

/// <remarks>

/// 举¨´例¤y:

/// SqlDataReader r = ExecuteReader(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));

/// </remarks>

/// <param name="connectionString">一°?个?有®D效¡ì的Ì?连¢?接¨®字Á?符¤?串ä?</param>

/// <param name="commandType">命¨¹令¢?类¤¨¤型¨ª(存ä?储ä¡é过y程¨¬, 文?本À?, 等Ì¨¨等Ì¨¨)</param>

/// <param name="commandText">存ä?储ä¡é过y程¨¬名?称?或¨°者?sql命¨¹令¢?语®?句?</param>

/// <param name="commandParameters">执¡ä行D命¨¹令¢?所¨´用®?参?数ºy的Ì?集¡¥合?</param>

/// <returns>包ã¨¹含?结¨¢果?的Ì?读¨¢取¨?器¡Â</returns>

public static SqlDataReader ExecuteReader(string connectionString, CommandType cmdType, string cmdText, params SqlParameter[] commandParameters)

{

//创ä¡ä建¡§一°?个?SqlCommand对?象¨®

SqlCommand cmd = new SqlCommand();

//创ä¡ä建¡§一°?个?SqlConnection对?象¨®

SqlConnection conn = new SqlConnection(connectionString);

//在¨²这a里¤?我¨°们?用®?一°?个?try/catch结¨¢构1执¡ä行Dsql文?本À?命¨¹令¢?/存ä?储ä¡é过y程¨¬，ê?因°¨°为a如¨?果?这a个?方¤?法¤¡§产¨²生¦¨²一°?个?异°¨¬常¡ê我¨°们?要°a关?闭À?连¢?接¨®，ê?因°¨°为a没?有®D读¨¢取¨?器¡Â存ä?在¨²，ê?

//因°¨°此ä?commandBehaviour.CloseConnection 就¨ª不?会¨¢执¡ä行D

try {

//调Ì¡Â用®? PrepareCommand 方¤?法¤¡§，ê?对? SqlCommand 对?象¨®设¦¨¨置?参?数ºy

PrepareCommand(cmd, conn, null, cmdType, cmdText, commandParameters);

//调Ì¡Â用®? SqlCommand 的Ì? ExecuteReader 方¤?法¤¡§

SqlDataReader reader = cmd.ExecuteReader(CommandBehavior.CloseConnection);

//清?除y参?数ºy

cmd.Parameters.Clear();

return reader;

}

catch {

//关?闭À?连¢?接¨®，ê?抛¡Á出?异°¨¬常¡ê

conn.Close();

throw;

}

/// <summary>

/// 用®?指?定¡§的Ì?数ºy据Y库a连¢?接¨®字Á?符¤?串ä?执¡ä行D一°?个?命¨¹令¢?并¡é返¤¦Ì回?一°?个?数ºy据Y集¡¥的Ì?第Ì¨²一°?列¢D

/// </summary>

/// <remarks>

///例¤y如¨?:

/// Object obj = ExecuteScalar(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));

/// </remarks>

///<param name="connectionString">一°?个?有®D效¡ì的Ì?连¢?接¨®字Á?符¤?串ä?</param>

/// <param name="commandType">命¨¹令¢?类¤¨¤型¨ª(存ä?储ä¡é过y程¨¬, 文?本À?, 等Ì¨¨等Ì¨¨)</param>

/// <param name="commandText">存ä?储ä¡é过y程¨¬名?称?或¨°者?sql命¨¹令¢?语®?句?</param>

/// <param name="commandParameters">执¡ä行D命¨¹令¢?所¨´用®?参?数ºy的Ì?集¡¥合?</param>

/// <returns>用®? Convert.To{Type}把ã?类¤¨¤型¨ª转Áa换?为a想?要°a的Ì? </returns>

public static object ExecuteScalar(string connectionString, CommandType cmdType, string cmdText, params SqlParameter[] commandParameters) {

SqlCommand cmd = new SqlCommand();

using (SqlConnection connection = new SqlConnection(connectionString)) {

PrepareCommand(cmd, connection, null, cmdType, cmdText, commandParameters);

object val = cmd.ExecuteScalar();

cmd.Parameters.Clear();

return val;

}

/// <summary>

/// 用®?指?定¡§的Ì?数ºy据Y库a连¢?接¨®执¡ä行D一°?个?命¨¹令¢?并¡é返¤¦Ì回?一°?个?数ºy据Y集¡¥的Ì?第Ì¨²一°?列¢D

/// </summary>

/// <remarks>

/// 例¤y如¨?:

/// Object obj = ExecuteScalar(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));

/// </remarks>

/// <param name="conn">一°?个?存ä?在¨²的Ì?数ºy据Y库a连¢?接¨®</param>

/// <param name="commandType">命¨¹令¢?类¤¨¤型¨ª(存ä?储ä¡é过y程¨¬, 文?本À?, 等Ì¨¨等Ì¨¨)</param>

/// <param name="commandText">存ä?储ä¡é过y程¨¬名?称?或¨°者?sql命¨¹令¢?语®?句?</param>

/// <param name="commandParameters">执¡ä行D命¨¹令¢?所¨´用®?参?数ºy的Ì?集¡¥合?</param>

/// <returns>用®? Convert.To{Type}把ã?类¤¨¤型¨ª转Áa换?为a想?要°a的Ì? </returns>

public static object ExecuteScalar(SqlConnection connection, CommandType cmdType, string cmdText, params SqlParameter[] commandParameters) {

SqlCommand cmd = new SqlCommand();

PrepareCommand(cmd, connection, null, cmdType, cmdText, commandParameters);

object val = cmd.ExecuteScalar();

cmd.Parameters.Clear();

return val;

}

/// <summary>

/// 将?参?数ºy集¡¥合?添¬¨ª加¨®到Ì?缓o存ä?

/// </summary>

/// <param name="cacheKey">添¬¨ª加¨®到Ì?缓o存ä?的Ì?变À?量¢?</param>

/// <param name="cmdParms">一°?个?将?要°a添¬¨ª加¨®到Ì?缓o存ä?的Ì?sql参?数ºy集¡¥合?</param>

public static void CacheParameters(string cacheKey, params SqlParameter[] commandParameters)

{

parmCache[cacheKey] = commandParameters;

}

/// <summary>

/// 找¨°会¨¢缓o存ä?参?数ºy集¡¥合?

/// </summary>

/// <param name="cacheKey">用®?于®¨²找¨°回?参?数ºy的Ì?关?键¨¹字Á?</param>

/// <returns>缓o存ä?的Ì?参?数ºy集¡¥合?</returns>

public static SqlParameter[] GetCachedParameters(string cacheKey) {

SqlParameter[] cachedParms = (SqlParameter[])parmCache[cacheKey];

if (cachedParms == null)

return null;

SqlParameter[] clonedParms = new SqlParameter[cachedParms.Length];

for (int i = 0, j = cachedParms.Length; i < j; i++)

clonedParms[i] = (SqlParameter)((ICloneable)cachedParms[i]).Clone();

return clonedParms;

}

/// <summary>

/// 准Á?备À?执¡ä行D一°?个?命¨¹令¢?

/// </summary>

/// <param name="cmd">sql命¨¹令¢?</param>

/// <param name="conn">Sql连¢?接¨®</param>

/// <param name="trans">Sql事º?务?</param>

/// <param name="cmdType">命¨¹令¢?类¤¨¤型¨ª例¤y如¨? 存ä?储ä¡é过y程¨¬或¨°者?文?本À?</param>

/// <param name="cmdText">命¨¹令¢?文?本À?,例¤y如¨?：êoSelect * from Products</param>

/// <param name="cmdParms">执¡ä行D命¨¹令¢?的Ì?参?数ºy</param>

private static void PrepareCommand(SqlCommand cmd, SqlConnection conn, SqlTransaction trans, CommandType cmdType, string cmdText, SqlParameter[] cmdParms) {

if (conn.State != ConnectionState.Open)

conn.Open();

cmd.Connection = conn;

cmd.CommandText = cmdText;

if (trans != null)

cmd.Transaction = trans;

cmd.CommandType = cmdType;

if (cmdParms != null) {

foreach (SqlParameter parm in cmdParms)

cmd.Parameters.Add(parm);

}

二、Model项目对象-关系模型转换。

ContentInfo.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace Model //定¡§义°?实º¦Ì体¬?类¤¨¤

{

public class ContentInfo

{

private int _ID;

private string _Title;

private string _Contents;

private DateTime _AddDate;

/// <summary>

/// 文?章?内¨²容¨Y构1造¨¬函¡¥数ºy

/// </summary>

/// <param name="id">文?章?流¢¡Â水?号?ID</param>

/// <param name="title">文?章?标À¨º题¬a</param>

/// <param name="contents">文?章?内¨²容¨Y</param>

/// <param name="addDate">发¤¡é表À¨ª日¨?期¨²</param>

public ContentInfo(int id, string title, string contents,DateTime addDate)

{

this._ID = id;

this._Title = title;

this._Contents = contents;

this._AddDate = addDate;

}

public ContentInfo()

{ }

//属º?性?

public int ID

{

get { return _ID; }

set { _ID = value; }

}

public string Title

{

get { return _Title; }

set { _Title = value; }

}

public string Contents

{

get { return _Contents; }

set { _Contents = value; }

}

public DateTime AddDate

{

get { return _AddDate; }

set { _AddDate = value; }

}

三、IDAL 项目

IContent.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using Model;

namespace IDAL //定¡§义°?接¨®口¨²，ê?主¡Â要°a是º?要°a完ª¨º成¨¦的Ì?操¨´作Á¡Â

{

/// <summary>

/// 文?章?内¨²容¨Y操¨´作Á¡Â接¨®口¨²

/// </summary>

public interface IContent

{

/// <summary>

/// 取¨?得Ì?文?章?的Ì?内¨²容¨Y

/// </summary>

/// <param name="id">文?章?的Ì?ID</param>

/// <returns></returns>

int AddContentInfo(ContentInfo Content);

int DeleteContentInfo(int id);

int UpdateContentInfo(ContentInfo Content);

List<ContentInfo> SelectContentInfo(int id);

List<ContentInfo> GetAllContentInfo();

}

四、SQLSERVERDAL项目

Content.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using Model;

using IDAL;

using System.Data;

using System.Data.SqlClient;

using DBUtility;

namespace SQLServerDAL

{

public class Content : IContent

{

public int AddContentInfo(ContentInfo Content)

{

SqlParameter[] parm=new SqlParameter[]

{

new SqlParameter("@Title",SqlDbType.VarChar,100),

new SqlParameter("@Contents",SqlDbType.VarChar,1000),

new SqlParameter("@AddDate",SqlDbType.DateTime,8),

};

parm[0].Value=Content.Title;

parm[1].Value=Content.Contents;

parm[2].Value=Content.AddDate;

string sSql="insert into newsContent (Title,Contents,AddDate) values (@Title,@Contents,@AddDate);";

return (SqlHelper.ExecuteNonQuery(SqlHelper.sConnetinString, CommandType.Text, sSql, parm));

}

public int DeleteContentInfo(int id)

{

SqlParameter parm = new SqlParameter("@ID",SqlDbType.Int,32);

parm.Value = id;

string sSql = "delete newsContent where ID=@ID;";

return (SqlHelper.ExecuteNonQuery(SqlHelper.sConnetinString,CommandType.Text,sSql,parm));

}

public int UpdateContentInfo(ContentInfo Content)

{

SqlParameter[] parm = new SqlParameter[]

{

new SqlParameter("@ID",SqlDbType.Int,32),

new SqlParameter("@Title",SqlDbType.VarChar,100),

new SqlParameter("@Contents",SqlDbType.VarChar,1000),

new SqlParameter("@AddDate",SqlDbType.DateTime,8),//DateTime是º?8位?的Ì?。¡ê

};

parm[0].Value = Content.ID;

parm[1].Value = Content.Title;

parm[2].Value = Content.Contents;

parm[3].Value = Content.AddDate;

string sSql = "update newsContent set Title=@Title,Contents=@Contents,AddDate=@AddDate where ID=@ID;";

return(SqlHelper.ExecuteNonQuery(SqlHelper.sConnetinString,CommandType.Text,sSql,parm));

}

public List<ContentInfo> SelectContentInfo(int id)

{

List<ContentInfo> listConent=new List<ContentInfo>();

SqlParameter parm = new SqlParameter("@ID",SqlDbType.Int,32);

parm.Value = id;

string sSql="select * from newsContent where ID=@ID ";

using (SqlDataReader dr = SqlHelper.ExecuteReader(SqlHelper.sConnetinString, CommandType.Text, sSql, parm))

{

while (dr.Read())

{

listConent.Add( new ContentInfo(dr.GetInt32(0), dr.GetString(1), dr.GetString(2), dr.GetDateTime(3)));

}

return listConent;

}

public List<ContentInfo> GetAllContentInfo()

{

List<ContentInfo> listConent = new List<ContentInfo>();

string sSql = "select * from newsContent";

using (SqlDataReader dr = SqlHelper.ExecuteReader(SqlHelper.sConnetinString, CommandType.Text, sSql, null))

{

while (dr.Read())

{

listConent.Add(new ContentInfo(dr.GetInt32(0), dr.GetString(1), dr.GetString(2), dr.GetDateTime(3)));

}

return listConent;

}

五、DALFactory项目

Content.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using IDAL;

using System.Reflection; //使用反射,读取Web配置文件，创建一种数据库对象的实例。

using System.Configuration;

namespace DALFactory

{

public class Content

{

public static IDAL.IContent Create()

{

string path = ConfigurationManager.AppSettings["WebDAL"].ToString();

string className = path + ".Content";

//有®D配?置?文?件t指?定¡§的Ì?类¤¨¤组Á¨¦合?。¡ê

return (IDAL.IContent)Assembly.Load(path).CreateInstance(className);

}

六、BLL项目调用工厂类，返回抽象接口

Content.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using Model;

using IDAL;

using DALFactory;

namespace BLL

{

public class Content

{

Private dal= IContent dal = DALFactory.Content.Create();

public int AddContentInfo(ContentInfo Content)

{

return dal.AddContentInfo(Content);

}

public int DeleteContentInfo(int id)

{

return dal.DeleteContentInfo(id);

}

public int UpdateContentInfo(ContentInfo Content)

{

return dal.UpdateContentInfo(Content);

}

public List<ContentInfo> SelectContentInfo(int id)

{

return dal.SelectContentInfo(id);

}

public List<ContentInfo> GetAllContentInfo()

{

return dal.GetAllContentInfo();

}

七、WEB层（网站或Web应用程序）

Web.config

<?xml version="1.0"?>

<!--

有®D关?如¨?何?配?置? ASP.NET 应®|用®?程¨¬序¨°的Ì?详¨º细?信?息¡é，ê?请?访¤?问¨º

http://go.microsoft.com/fwlink/?LinkId=169433

-->

<system.web>

</system.web>

</connectionStrings>

</appSettings>

</configuration>

Default.aspx前台

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

</head>

<body>

<div>

<asp:Localize ID="Localize1" runat="server">标À¨º题¬a:</asp:Localize>

<asp:TextBox ID="tb_Title" runat="server"></asp:TextBox><br />

<asp:Localize ID="Localize2" runat="server">内¨²容¨Y：êo</asp:Localize>

<asp:TextBox ID="tb_Contents" runat="server" TextMode="MultiLine" Height="154px" Width="215px"></asp:TextBox>

<br />

   <asp:Button ID="btn_Send" runat="server" Text="发¤¡é表À¨ª"

onclick="btn_Send_Click" /> 

<asp:GridView ID="gv_NewsContent" runat="server" AutoGenerateColumns="False" DataKeyNames="ID"

AllowPaging="True" CellPadding="4" ForeColor="#333333" GridLines="None"

onrowdatabound="gv_NewsContent_RowDataBound"

onpageindexchanging="gv_NewsContent_PageIndexChanging"

onrowcancelingedit="gv_NewsContent_RowCancelingEdit"

onrowdeleting="gv_NewsContent_RowDeleting"

onrowediting="gv_NewsContent_RowEditing"

onrowupdating="gv_NewsContent_RowUpdating" PageSize="5" ShowFooter="True"

Width="915px" >

<asp:BoundField DataField="ID" HeaderText="ID" SortExpression="ID" />

<asp:TemplateField HeaderText="标À¨º题¬a" SortExpression="Title" ItemStyle-Width="200px">

<asp:TextBox ID="tb_Title" runat="server" Text='<%# Bind("Title") %>'></asp:TextBox>

</EditItemTemplate>

<asp:Label ID="lb_Title" runat="server" Text='<%# Bind("Title") %>'></asp:Label>

</ItemTemplate>

<asp:Label ID="lb_RecordNumber" runat="server" Text=""></asp:Label>

</FooterTemplate>

</asp:TemplateField>

<asp:TemplateField HeaderText="内¨²容¨Y" SortExpression="Contents" ItemStyle-Width="400px">

<asp:TextBox ID="tb_Contents" runat="server" Text='<%# Bind("Contents") %>'></asp:TextBox>

</EditItemTemplate>

<asp:Label ID="lb_Contents" runat="server" Text='<%# Bind("Contents") %>'></asp:Label>

</ItemTemplate>

<asp:Label ID="lb_PageCount" runat="server" Text=""></asp:Label>

</FooterTemplate>

</asp:TemplateField>

<asp:TemplateField HeaderText="发¤¡é表À¨ª时º¡À间?">

<asp:TextBox ID="tb_AddDate" runat="server" Text='<%# Bind("AddDate") %>'></asp:TextBox>

</EditItemTemplate>

<asp:Label ID="lb_AddDate" runat="server" Text='<%# Bind("AddDate") %>'></asp:Label>

</ItemTemplate>

</asp:TemplateField>

<asp:CommandField ShowEditButton="True" />

<asp:CommandField ShowDeleteButton="True" />

</Columns>

<PagerSettings FirstPageText="首º¡Á页°3" LastPageText="末?页°3"

Mode="NextPreviousFirstLast" NextPageText="下?一°?页°3" PreviousPageText="上¦?一°?页°3" />

</asp:GridView>

</div>

</form>

</body>

</html>

后台：Default.aspx.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using Model;

using BLL;

public partial class _Default : System.Web.UI.Page

{

int TotalRowsCount = 0;

private BLL.Content ct = new BLL.Content();

protected void Page_Load(object sender, EventArgs e)

{

if (!IsPostBack)

{

SetBind();

}

private void SetBind()

{

gv_NewsContent.DataSource = ct.GetAllContentInfo();

TotalRowsCount= ct.GetAllContentInfo().Count;

//TotalRowsCount = gv_NewsContent.Rows.Count; 在¨²分¤?页?状Á¡ä态¬?下?不?能¨¹使º1用®?GridView 的Ì?Rows.Count来¤¡ä获?取¨?总Á¨¹记?录?数ºy，ê?它¨¹只?是º?获?得Ì?当Ì¡À前¡ã页°3面?的Ì?记?录?数ºy

gv_NewsContent.DataBind();

}

protected void btn_Send_Click(object sender, EventArgs e)

{

Model.ContentInfo ci = new ContentInfo();

ci.Title = tb_Title.Text;

ci.Contents = tb_Contents.Text;

ci.AddDate = DateTime.Now;

ct.AddContentInfo(ci);

SetBind();

}

protected void gv_NewsContent_RowDataBound(object sender, GridViewRowEventArgs e)

{

if (e.Row.RowType == DataControlRowType.DataRow)

{

e.Row.Attributes.Add("onmouseover", "currentcolor=this.style.backgroundColor;this.style.backgroundColor='lightblue'");//鼠º¨®标À¨º移°?上¦?去¨£¤时º¡À

e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=currentcolor;");//鼠º¨®标À¨º移°?开a时º¡À

}

if (e.Row.RowType == DataControlRowType.Footer)

{

((Label)(e.Row.FindControl("lb_RecordNumber"))).Text = "共2有®D" + TotalRowsCount + "条¬?记?录?";

(e.Row.FindControl("lb_PageCount") as Label).Text = "第Ì¨²" + (gv_NewsContent.PageIndex + 1).ToString() + "页°3" + "共2" + (gv_NewsContent.PageCount.ToString()) + "页°3";

}

protected void gv_NewsContent_RowEditing(object sender, GridViewEditEventArgs e)

{

gv_NewsContent.EditIndex = e.NewEditIndex;

SetBind();

}

protected void gv_NewsContent_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)

{

gv_NewsContent.EditIndex = -1;

SetBind();

}

protected void gv_NewsContent_RowUpdating(object sender, GridViewUpdateEventArgs e)

{

Model.ContentInfo ci = new ContentInfo();

BLL.Content ct = new BLL.Content();

int iIndex=Convert.ToInt32(e.RowIndex);

GridViewRow gvr=gv_NewsContent.Rows[iIndex];

ci.ID=Convert.ToInt32(gv_NewsContent.DataKeys[iIndex].Value);

ci.Title=(gvr.FindControl("tb_Title") as TextBox).Text.Trim();

ci.Contents=(gvr.FindControl("tb_Contents") as TextBox).Text.Trim();

ci.AddDate= Convert.ToDateTime((gvr.FindControl("tb_AddDate") as TextBox ).Text.Trim());

ct.UpdateContentInfo(ci);

gv_NewsContent.EditIndex = -1;

SetBind();

}

protected void gv_NewsContent_RowDeleting(object sender, GridViewDeleteEventArgs e)

{

int iIndex =Convert.ToInt32 (e.RowIndex);

ct.DeleteContentInfo(Convert.ToInt32(gv_NewsContent.DataKeys[iIndex].Value));

SetBind();

}

protected void gv_NewsContent_PageIndexChanging(object sender, GridViewPageEventArgs e)

{

gv_NewsContent.PageIndex = e.NewPageIndex;

SetBind();

}