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) |
|
OracleDAL |
Oracle数据访问层 |
|||||
|
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?大䨮用®?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¢?（ꡧ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?, 等̨¨等̨¨)</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¢?（ꡧ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?, 等̨¨等̨¨)</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¢?（ꡧ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?, 等̨¨等̨¨)</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?, 等̨¨等̨¨)</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>包㨹含?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?第̨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?, 等̨¨等̨¨)</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?第̨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?, 等̨¨等̨¨)</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
-->
<configuration>
<system.web>
<compilation debug="true" targetFramework="4.0"/>
</system.web>
<connectionStrings>
<add name="newsConnectionString" connectionString="Data Source=.\sqlexpress;Initial Catalog=dbNews;Integrated Security=True;Pooling=False"/>
</connectionStrings>
<appSettings>
<add key="WebDAL" value="SQLServerDAL"/>
</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">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<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" />
<input id="Reset1" type="reset" value="清?空?" />
<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" >
<AlternatingRowStyle BackColor="White" />
<Columns>
<asp:BoundField DataField="ID" HeaderText="ID" SortExpression="ID" />
<asp:TemplateField HeaderText="标À¨º题¬a" SortExpression="Title" ItemStyle-Width="200px">
<EditItemTemplate>
<asp:TextBox ID="tb_Title" runat="server" Text='<%# Bind("Title") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lb_Title" runat="server" Text='<%# Bind("Title") %>'></asp:Label>
</ItemTemplate>
<FooterTemplate>
<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">
<EditItemTemplate>
<asp:TextBox ID="tb_Contents" runat="server" Text='<%# Bind("Contents") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lb_Contents" runat="server" Text='<%# Bind("Contents") %>'></asp:Label>
</ItemTemplate>
<FooterTemplate >
<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?">
<EditItemTemplate>
<asp:TextBox ID="tb_AddDate" runat="server" Text='<%# Bind("AddDate") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lb_AddDate" runat="server" Text='<%# Bind("AddDate") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:CommandField ShowEditButton="True" />
<asp:CommandField ShowDeleteButton="True" />
</Columns>
<EditRowStyle BackColor="#2461BF" />
<FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<PagerSettings FirstPageText="首º¡Á页°3" LastPageText="末?页°3"
Mode="NextPreviousFirstLast" NextPageText="下?一°?页°3" PreviousPageText="上¦?一°?页°3" />
<PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
<RowStyle BackColor="#EFF3FB" />
<SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
<SortedAscendingCellStyle BackColor="#F5F7FB" />
<SortedAscendingHeaderStyle BackColor="#6D95E1" />
<SortedDescendingCellStyle BackColor="#E9EBEF" />
<SortedDescendingHeaderStyle BackColor="#4870BE" />
</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 = "第̨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();
}
}