ASP.net+SQL server2008简单的数据库增删改查 VS2012
工具：VS2012
数据库：SQL server
简单说明：根据老师上课给的代码，进行了简单的改正适用于VS2012环境，包括注册、登录、查询、修改、删除功能，多数参考了网上的代码
百度云源代码连接testDAO：http://pan.baidu.com/s/1c0CTRgs
遇见的问题：
1、字符文本中字符太多: 在html中用的<a href=" ">,在.NET中需要把双引号变成单引号，javascript中的部分双引号也需变成单引号，此处代码详见register.aspx
2、如何javascript获取表格中的行数：通过varx=document.getElementById("表格id");找到table，x.rows[].cells[]即可找到第几行第几列 此处代码详见register.aspx的javascript代码
3、如何通过asp获取url中参数的值：http://localhost:30965/testDAO/list.aspx？username=16&psaaword=21
String x= Request.QueryString["username"];即可获得username的值16
文件结构如右图所示
数据库名字：easylife 表的名字：table_user 表内容如图：
界面如下图所示：
DBHelper.cs代码：在每一个对象的数据库访问类中：1、数据库连接反复出现 2、数据库连接打开和关闭反复出现 3、执行Sql语句的方法相似
因此，定义DBHelper类，封装常用的方法
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Data.SqlClient; /// <summary>
/// DBHelper 的摘要说明
/// </summary>
namespace testDAO.Library
{
public class DBHelper
{//server=.;Trusted_Connection=SSPI;database=easylife
private String connectionString = "server=.;database=easylife;uid=sa;pwd=root"; public SqlDataReader ExecuteReader(String sql)
{
SqlConnection connection = new SqlConnection(connectionString);
connection.Open(); SqlCommand command = new SqlCommand(sql,connection); SqlDataReader result = command.ExecuteReader(); return result;
} public bool ExecuteCommand(String sql)
{
bool result = false; try
{
SqlConnection connection = new SqlConnection(connectionString);
connection.Open(); SqlCommand command = new SqlCommand(sql,connection);
//command.Connection = connection;
//command.CommandText = sql;
command.ExecuteNonQuery(); connection.Close(); result = true;
}
catch (Exception e)
{
throw e;
} return result;
} }
}
定义User类封装用户信息 User.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web; /// <summary>
/// User 的摘要说明
/// </summary>
namespace testDAO.Library
{
public class User
{
private String userName = "";
private String userLogin = "";
private String userPwd = ""; public String UserName
{
get
{
return userName;
}
set
{
userName = value;
}
} public String UserLogin
{
get
{
return userLogin;
}
set
{
userLogin = value;
}
} public String UserPwd
{
get
{
return userPwd;
}
set
{
userPwd = value;
}
}
}
}
采用UserService实现将用户信息的数据库操作 UserService.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web; using System.Data.SqlClient;
/// <summary>
/// UserService 的摘要说明
/// </summary>
namespace testDAO.Library
{
public class UserService
{
public bool AddUser(User user)
{
bool result = false;
String sql = ""; sql = "insert into table_user (userName,userLogin,userPwd)values(";
sql += "'" + user.UserName + "',";
sql += "'" + user.UserLogin + "',";
sql += "'" + user.UserPwd + "'";
sql += ")"; DBHelper helper = new DBHelper();
result = helper.ExecuteCommand(sql);
return result; } public User GetUserByLogin(User user)
{
String sql = ""; sql = "select * from table_user where userLogin='" + user.UserLogin + "'"; DBHelper helper = new DBHelper();
SqlDataReader reader = helper.ExecuteReader(sql);
User result = new User();
if (reader.Read())
{ result.UserName = reader.GetString();
result.UserLogin = reader.GetString();
result.UserPwd = reader.GetString(); }
else
{
return null;
} return result;
} public List<User> GetAllUsers()
{
String sql = ""; sql = "select * from table_user"; DBHelper helper = new DBHelper();
SqlDataReader reader = helper.ExecuteReader(sql); if (!reader.HasRows)
{
return null;
} List<User> list = new List<User>();
while (reader.Read())
{
User item = new User(); item.UserName = reader.GetString();
item.UserLogin = reader.GetString();
item.UserPwd = reader.GetString(); list.Add(item);
} return list;
} public bool DeleteUsers(String i)
{
bool result = false;
String sql = "";
sql = "delete from table_user where userLogin ='"+ i+" '" ;
DBHelper helper = new DBHelper();
result = helper.ExecuteCommand(sql);
return result;
} public bool UpdateUsers(User user)
{
bool result = false;
String sql = "";
sql = "update table_user set userName= '" + user.UserName + "',userPwd='" + user.UserPwd + " ' where userlogin='" + user.UserLogin + " '";
// update table_user set userName='1',userPwd='1' where userLogin='5'
DBHelper helper = new DBHelper();
result = helper.ExecuteCommand(sql);
return result;
} }
}
业务逻辑层UserManager.cs，是表示层与数据访问层的桥梁 ，用于完成逻辑判断、业务处理、数据传递等操作。
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web; /// <summary>
/// UserManager 的摘要说明
/// </summary>
namespace testDAO.Library
{
public class UserManager
{
public bool AddUser(User user)
{
UserService service = new UserService();
User temp = service.GetUserByLogin(user); if (temp != null)
{
return false;
} bool result = service.AddUser(user);
return result;
} public bool Login(User user)
{
bool result = false; UserService service = new UserService(); User temp = service.GetUserByLogin(user);
if (temp == null)
{
result = false;
}
else if (user.UserPwd.Equals(temp.UserPwd))
{
result = true;
} return result;
} public List<User> GetAllUsers()
{
UserService service = new UserService();
return service.GetAllUsers();
}
public bool DeleteUser(User user)
{
UserService service = new UserService(); bool result = service.DeleteUsers(user.UserLogin);
return result; } public bool UpdateUser(User user)
{
UserService service = new UserService();
bool result = service.UpdateUsers(user);
return result;
}
}
}
注册界面代码regeister.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="register.aspx.cs" Inherits="register" %> <!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title></title>
</head>
<body>
<form id="form1" runat="server"> <div>
<br />
<asp:Label ID="Label1" runat="server" Text="姓名："></asp:Label>
<asp:TextBox ID="nameText" runat="server"></asp:TextBox>
<br />
<br />
<asp:Label ID="Label2" runat="server" Text="帐号："></asp:Label>
<asp:TextBox ID="loginText" runat="server"></asp:TextBox>
<br />
<br />
<asp:Label ID="Label3" runat="server" Text="密码："></asp:Label>
<asp:TextBox ID="pwdText" runat="server"></asp:TextBox>
<br />
<br />
<asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="注册" />
<asp:Button ID="Button2" runat="server" onclick="Button2_Click" Text="转向登录" />
</div>
</form>
</body>
</html>
注册界面逻辑代码 regeister.aspx.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using testDAO.Library; public partial class register : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{ } public void CreateTable()
{
String connectionString = "server=.;Trusted_Connection=SSPI;database=easylife";
SqlConnection connection = new SqlConnection(connectionString);
connection.Open();
SqlCommand command = new SqlCommand();
command.Connection = connection;
command.ExecuteNonQuery();
connection.Close();
}
protected void Button1_Click(object sender, EventArgs e)
{
String userName = nameText.Text;
String userLogin = loginText.Text;
String userPwd = pwdText.Text; User user = new User();
user.UserName = userName;
user.UserLogin = userLogin;
user.UserPwd = userPwd; bool result = false;
UserManager manager = new UserManager();
result = manager.AddUser(user);
Response.Write(result);
if (result)
{
Response.Write("注册成功");
}
else
{
Response.Write("注册失败");
}
}
protected void Button2_Click(object sender, EventArgs e)
{
Response.Redirect("login.aspx");
}
}
regeister.aspx.cs
登录界面代码 login.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="login.aspx.cs" Inherits="login" %> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<br />
<asp:Label ID="Label1" runat="server" Text="帐号："></asp:Label>
<asp:TextBox ID="loginText" runat="server"></asp:TextBox>
<br />
<br />
<asp:Label ID="Label2" runat="server" Text="密码："></asp:Label>
<asp:TextBox ID="pwdText" runat="server"></asp:TextBox>
<br />
<br />
<asp:Button ID="loginButton" runat="server" onclick="loginButton_Click"
Text="登录" />
<asp:Button ID="Button1" runat="server" Text="转向注册" OnClick="Button1_Click" />
</div>
</form>
</body>
</html>
login.aspx
登录界面逻辑代码 login.aspx.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using testDAO.Library; public partial class login : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{ }
protected void Button1_Click(object sender, EventArgs e)
{
Response.Redirect("register.aspx");
} protected void loginButton_Click(object sender, EventArgs e)
{
User user = new User(); user.UserLogin = loginText.Text;
user.UserPwd = pwdText.Text; UserManager manager = new UserManager();
bool result = manager.Login(user);
if (result)
{
Response.Redirect("list.aspx");
}
else
{
Response.Write("登录失败,请输入正确的用户名和密码");
} }
}
login.aspx.cs
显示界面代码：
显示界面相关说明：
显示界面图片是这样：
当点击修改时图片如下：
点击修改时通过table获得table中的行数，从而改变行数中相应的内容，相关代码在javascript中
参数传值通过URL获取
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="list.aspx.cs" Inherits="list" %> <%@ Import Namespace="testDAO.Library" %>
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<table id="test" width="" align="center" border = "" cellpadding="" cellspacing="" bordercolordark="#808080" bordercolorlight="#ffffff" >
<tr>
<td align="center">序号</td>
<td align="center">姓名</td>
<td align="center">帐号</td>
<td align="center">密码</td>
<td align="center">修改</td>
<td align="center">删除</td>
</tr>
<%
UserManager manager = new UserManager();
List<User> list = manager.GetAllUsers(); for (int i = ; i < list.Count; i++)
{
Response.Write("<tr >");
Response.Write("<td align='center'>" + i + "</td>");
Response.Write("<td align='center'>" + list[i].UserName + "</td>");
Response.Write("<td align='center' id='loginText'>" + list[i].UserLogin + "</td>");
Response.Write("<td align='center'>" + list[i].UserPwd + "</td>"); Response.Write("<td align='center'><input type='Button' value='修改' onclick='test1("+i+")' >修改</td>");
Response.Write("<td align='center'><a href='userDelete.aspx?userLogin=" + list[i].UserLogin + "'>删除</a></td>"); Response.Write("</tr>");
}
%>
</table>
<asp:Button ID="button" runat="server" Text="转向注册" OnClick="Button1_Click" /> </div>
</form>
<script type="text/javascript"> function test1(j)
{
var table = document.getElementById("test");
table.rows[j + ].cells[].innerHTML = "<input type='text' id='nameText' >";
table.rows[j + ].cells[].innerHTML = "<input type='text' id='pwdText' >";
table.rows[j + ].cells[].innerHTML="<input type='button' value='确定' onclick='tiaozhuan("+j+")' >" }
function tiaozhuan(i) {
var table = document.getElementById("test");
var userName=document.getElementById("nameText").value;
var userPwd = document.getElementById("pwdText").value;
var userLogin=table.rows[i + ].cells[].innerHTML; location.href="userUpdate.aspx?userName="+ userName+"&userPwd="+userPwd+"&userLogin="+userLogin+" ";
}
</script>
</body>
</html>
list.aspx
list.aspx.cs代码只有通过点击button按钮转向到注册页面，对其它功能并无影响
通过点击修改进行更新逻辑代码 UserUpdate.aspx.cs代码
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using testDAO.Library; public partial class userUpdate : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{ User user = new User(); user.UserName= Request.QueryString["userName"];
user.UserLogin = Request.QueryString["userLogin"];
user.UserPwd = Request.QueryString["userPwd"];
UserManager manager = new UserManager();
bool result = manager.UpdateUser(user);
if (result)
{
Response.Redirect("list.aspx");
}
else
{
Response.Write("修改失败");
} }
}
通过点击删除进行删除逻辑代码 userDelete.aspx.cs代码
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using testDAO.Library;
public partial class userDelete : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
User user = new User(); user.UserLogin = Request.QueryString["userLogin"]; UserManager manager = new UserManager();
bool result = manager.DeleteUser(user);
if (result)
{
Response.Redirect("list.aspx");
}
else
{
Response.Write("删除失败");
} }
}
ASP.net+SQL server2008简单的数据库增删改查 VS2012的更多相关文章
- SQL 的简单命令（增删改查）
数据库操作的资料: 链接: https://pan.baidu.com/s/1dFl3q6X 密码: nvy7-- 增:insert into 表名 (列名) values (值) ,'dew') - ...
- 通过Sql语句控制SQLite数据库增删改查
person类属性有Intenger id,String name,Intenger age,相应的构造方法和set get方法. package com.xh.tx.dao; import jav ...
- WindowsPhone8 数据库增删改查
今天第一次在博客园发表文章,如果有的地方写的不对,还请大家指出! 1.这就是一个简单wp8数据库增删改查 1.创建数据表Person [Table] public class Person : INo ...
- Asp.Net操作MySql数据库增删改查
Asp.Net操作MySql数据库增删改查,话不多说直接步入正题.git源码地址:https://git.oschina.net/gxiaopan/NetMySql.git 1.安装MySQL数据库 ...
- MyBatis学习（二）、SQL语句映射文件(2)增删改查、参数、缓存
二.SQL语句映射文件(2)增删改查.参数.缓存 2.2 select 一个select 元素非常简单.例如: <!-- 查询学生,根据id --> <select id=" ...
- Yii2.0高级框架数据库增删改查的一些操作（转）
yii2.0框架是PHP开发的一个比较高效率的框架,集合了作者的大量心血,下面通过用户为例给大家详解yii2.0高级框架数据库增删改查的一些操作 --------------------------- ...
- Yii2.0高级框架数据库增删改查的一些操作
yii2.0框架是PHP开发的一个比较高效率的框架,集合了作者的大量心血,下面通过用户为例给大家详解yii2.0高级框架数据库增删改查的一些操作 --------------------------- ...
- MyBatis学习 之 二、SQL语句映射文件(2)增删改查、参数、缓存
目录(?)[-] 二SQL语句映射文件2增删改查参数缓存 select insert updatedelete sql parameters 基本类型参数 Java实体类型参数 Map参数 多参数的实 ...
- Python实现mysql数据库增删改查
利用python操作mysql数据库用法简单,环境配置容易,本文将实现对库增.删.改.查的简易封装! 1. 环境配置 安装第三方包 ,导入模块 mysql.connector pip inst ...
随机推荐
- [core java学习笔记][第六章接口与内部类]
接口域内部类 接口 描述类具有什么功能,不给出具体实现. 内部类 用于设计协作关系的类集合 代理 实现任意接口的对象. 6.1 接口 接口声明 public interface Comparable ...
- HTTP协议2之基本认证--转
http协议是无状态的, 浏览器和web服务器之间可以通过cookie来身份识别. 桌面应用程序(比如新浪桌面客户端)跟Web服务器之间是如何身份识别呢? 什么是HTTP基本认证 桌面应用程序也通过H ...
- iOS-OC-基础-NSNumber常用方法
/*===========================NSNumber数值对象=========================*/ // 将基本数据类型保存为NSNumber 对象类型 NSNu ...
- C#中Dispose、析构函数、close的区别
一.Close与Dispose这两种方法的区别 调用完了对象的Close方法后,此对象有可能被重新进行使用:而Dispose方法来说,此对象所占有的资源需要被标记为无用了,也就是此对象要被销毁,不能再 ...
- MYSQL操作的一些知识点，持续更新中····
基本概念——库 1.数据库服务器:库——>表——>行/列 2.cmd下链接: mysql – uroot –proot 3.创建库:create database php; 3.看数据库 ...
- 用IBM WebSphere DataStage进行数据整合: 第 1 部分
转自:http://www.ibm.com/developerworks/cn/data/library/techarticles/dm-0602zhoudp/ 引言 传统的数据整合方式需要大量的手工 ...
- python运维开发(二十五)---cmdb开发
内容目录: 浅谈ITIL CMDB介绍 Django自定义用户认证 Restful 规范 资产管理功能开发 浅谈ITIL TIL即IT基础架构库(Information Technology Infr ...
- python随机产生4个互不相等的随机数
从0-9中随机产生4个互不相等的数, 方法一: import random s=[] while(len(s)<4): x=random.randint(0,9) if x not in s: ...
- CSS基础-引入方法，选择器，继承
一.CSS引入方法:行内式.嵌入式.导入式.链接式. 1.行内式. 即:在标签的style属性中设定CSS样式. 例子:<div style="行内式</div> 2.嵌入 ...
- TextReader/TextWriter 的类
TextReader以及TextWriter这两个类,非常有用,很多方法都接受它们作为参数. TextReader有两个子类: StringReader/StringWriter 用于读取字符串: S ...