三层架构之泛型应用的简单登录

最近在学习泛型,感觉很灵活,做了一个小例子,方便我们了解泛型,本博文主要目的是为了分享这个小源码,没有什么其他目的,觉得文章哪里有问题的请指出来,不要,谢谢!

项目结构图如下所示:

Model类库中的UserEntity.cs文件如下所示:

UserEntity
 1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Text;
5
6 namespace xu.Model.user
7 {
8 [Serializable]
9 public class UserEntity
10 {
11 private string _username;
12 private string _userpassword;
13 public string UserName
14 {
15 set { _username = value; }
16 get { return _username; }
17 }
18 public string UserPassword
19 {
20 set { _userpassword = value; }
21 get { return _userpassword; }
22 }
23 }
24 }

IDAL类库中IBaseDAL.cs文件如下所示:

IBaseDAL.cs
 1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Text;
5
6 namespace xu.IDAL
7 {
8 public interface IBaseDAL<T> where T : class
9 {
10 bool Inset(T model);
11 bool Update(T model);
12 bool Delete(object ID);
13 T GetModel(object ID);
14 IList<T> GetList();
15 }
16 }

DAL类库中UserDAL.cs文件如下所示:

UserDAL.cs
 1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Text;
5
6 namespace xu.DAL.user
7 {
8 public class UserDAL:xu.IDAL.IBaseDAL<xu.Model.user.UserEntity>
9 {
10 #region IBaseDAL<UserEntity> 成员
11
12 public bool Inset(xu.Model.user.UserEntity model)
13 {
14 throw new NotImplementedException();
15 }
16
17 public bool Update(xu.Model.user.UserEntity model)
18 {
19 throw new NotImplementedException();
20 }
21
22 public bool Delete(object ID)
23 {
24 throw new NotImplementedException();
25 }
26
27 public xu.Model.user.UserEntity GetModel(object ID)
28 {
29 xu.Model.user.UserEntity userEntity = new xu.Model.user.UserEntity();
30 userEntity.UserName = "admin";
31 userEntity.UserPassword = "admin";
32 return userEntity;
33 }
34
35 public IList<xu.Model.user.UserEntity> GetList()
36 {
37 throw new NotImplementedException();
38 }
39
40 #endregion
41 }
42 }

BLL类库中BaseBLL.cs文件如下所示:

BaseBLL
 1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Text;
5
6 namespace xu.BLL
7 {
8 public class BaseBLL<T,D>
9 where T:class
10 where D:xu.IDAL.IBaseDAL<T>,new()
11 {
12 private D dal = new D();
13
14 public virtual bool Insert(T model)
15 {
16 return dal.Inset(model);
17 }
18
19 public virtual bool Update(T model)
20 {
21 return dal.Update(model);
22 }
23
24 public virtual bool Delete(object ID)
25 {
26 return dal.Delete(ID);
27 }
28
29 public virtual T GetModel(object ID)
30 {
31 return dal.GetModel(ID);
32 }
33
34 public virtual IList<T> GetList()
35 {
36 return dal.GetList();
37 }
38 }
39 }

BLL类库中UserBLL.cs文件如下所示:(在UserBLL中没有什么业务的时候可以直接调用BaseBLL文件)

UserBLL.cs
 1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Text;
5
6 namespace xu.BLL.user
7 {
8 public class UserBLL:xu.BLL.BaseBLL<xu.Model.user.UserEntity,xu.DAL.user.UserDAL>
9 {
10 }
11 }

页面login.aspx文件如下所示:

View Code
 1 <%@ Page Language="C#" AutoEventWireup="true" CodeFile="login.aspx.cs" Inherits="login" %>
2
3 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
4
5 <html xmlns="http://www.w3.org/1999/xhtml">
6 <head runat="server">
7 <title></title>
8 </head>
9 <body>
10 <form id="form1" runat="server">
11 <div>
12
13 用户名:<asp:TextBox ID="txtUserName" runat="server"></asp:TextBox>
14 密码:<asp:TextBox ID="txtPassword" TextMode="Password" runat="server"></asp:TextBox>
15 <asp:Button ID="btnLogin" runat="server" Text="登录" onclick="btnLogin_Click" />
16 </div>
17 </form>
18 </body>
19 </html>

login.cs文件如下所示:

login.cs
 1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Web;
5 using System.Web.UI;
6 using System.Web.UI.WebControls;
7
8 public partial class login : System.Web.UI.Page
9 {
10 protected void Page_Load(object sender, EventArgs e)
11 {
12 if (!IsPostBack)
13 { }
14 }
15
16 /// <summary>
17 /// 登录
18 /// </summary>
19 /// <param name="sender"></param>
20 /// <param name="e"></param>
21 protected void btnLogin_Click(object sender, EventArgs e)
22 {
23 xu.BLL.user.UserBLL userBLL = new xu.BLL.user.UserBLL();
24 //如果UserBLL没有任何业务的话,那就不要继承了,在UI直接用BaseBLL这个泛型类就可以
25 xu.BLL.BaseBLL<xu.Model.user.UserEntity, xu.DAL.user.UserDAL> baseBLL = new xu.BLL.BaseBLL<xu.Model.user.UserEntity, xu.DAL.user.UserDAL>();
26 xu.Model.user.UserEntity userEntity = userBLL.GetModel(1);
27 if (this.txtUserName.Text == userEntity.UserName && this.txtPassword.Text == userEntity.UserPassword)
28 {
29 Response.Write("<font color=red>登录成功!</font>");
30 }
31 else {
32 Response.Write("<font color=red>登录失败!</font>");
33 }
34 }
35 }

本博文目的是在于分享源码,可以方便研究学习之用!请不要恶意喷,你觉得没必要学习可以马上离开本页面,谢谢。此网页如有什么不明白的地方,可以加入.NET技术交流群29844530 可以查看原博客,地址:http://www.cnblogs.com/liubiaocai/archive/2011/08/07/2129809.html

一切伟大的行动和思想,都有一个微不足道的开始。微不足道的我,正在吸取知识的土壤,希望能取得成功!不嫌弃我微不足道的,愿交天下好友!

源码下载,点击这里

版权所有,转载请注明出处!

一切伟大的行动和思想,都有一个微不足道的开始。微不足道的我,正在吸取知识的土壤,希望能取得成功!不嫌弃我微不足道的,愿交天下好友!

原文地址:https://www.cnblogs.com/cmsdn/p/2210825.html