基于C#的图书借阅管理系统
目录
- 基于C#的图书借阅管理系统
- 一、数据库设计
- 数据库代码（SQL Sever）
- 链接数据库
- 二、Vs 2022后台代码
- 1.登录界面代码
- 2.图书信息界面代码
- 3.图书编辑页面代码
- 4.借阅记录界面代码
一、数据库设计
根据需求分析，一个基本的图书借阅管理系统数据库大致包括4个表：用户信息表（ReaderUser）、管理员信息表（AdminTable）、图书信息表（BookInfo）、借书表（Borrow）。分别存放相应子功能模块的数据信息，各表之间相互关联，数据统一操作。
数据库代码（SQL Sever）
create database BookManger
go
use BookManger
go
--管理员表格
create table AdminTable
(
code nvarchar(50) not null, --账号
name varchar(20) not null, --姓名
pwd nvarchar(100) not null, --密码
constraint pk_AdminTable primary key(code)
)
go
insert into AdminTable values('123456','张三','123456')
--用户表格
create table ReadUser
(
R_code nvarchar(50) not null, --账号
R_pwd nvarchar(100) not null, --密码
R_name nvarchar(20) not null, --姓名
constraint pk_ReadUser primary key(R_code)
)
go
--图书信息
create table BookInfo
(
id int identity(1,1) not null, --主键（自增长主键）
Bname nvarchar(100) not null, --图书名称
ISBN nvarchar(50) not null, --ISBN编码
publisher nvarchar(100) not null, --出版社
publiDate datetime not null , --出版日期
sl int not null, --图书数量
price money not null, --单价
constraint pk_BookInfo primary key(id)
)
go
--借书表（主表）
create table Borrow
(
id int identity(1,1) not null, --主键（自增长主键）
U_code nvarchar(50) not null, --读者账号
U_name nvarchar(50) not null,
B_id int not null, --读者Id
B_date datetime default getdate() not null, --借书日期
B_day int not null, --借书天数
R_date datetime null, --还书日期
B_state nvarchar(20) default N'借阅中' not null, --借还书状态:借阅中、如期归还、超期归还、超期未还
constraint pk_Borrow primary key(id)
)
go链接数据库
using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Web;
public class DAB
{
const string connectionString = @"server=127.0.0.1;database=BookManger;Uid=sa;pwd=123456;";//访问数据库
public static SqlConnection Connection()
{
SqlConnection con = new SqlConnection();//创建连接
con.ConnectionString = connectionString;//connectionString打开数据库的字符串
return new SqlConnection();
}
//更新数据
public static int ExecuteNonQuery(String sql)
{
SqlConnection con = new SqlConnection();
con.ConnectionString = connectionString;
con.Open();//打开并连接数据库
//创建命令存储过程
SqlCommand cmd = con.CreateCommand();
cmd.CommandType = System.Data.CommandType.Text;//设置如何解释CommandText 值（即设置CommandText所代表的含义）
cmd.CommandText = sql;//执行的类型
int ret = cmd.ExecuteNonQuery();
con.Close();
return ret;
}
public static DataTable ExecuteDataTable(String sql)
{
SqlConnection con = new SqlConnection();
con.ConnectionString = connectionString;
con.Open();
//创建命令
SqlCommand cmd = con.CreateCommand();
cmd.CommandType = System.Data.CommandType.Text;
cmd.CommandText = sql;
//填充数据
DataTable dt = new DataTable();
SqlDataAdapter sqlDataAdapter = new SqlDataAdapter();//数据的更新
sqlDataAdapter.SelectCommand = cmd;
sqlDataAdapter.SelectCommand.Connection = con;
sqlDataAdapter.Fill(dt);//将数据放入表格
con.Close();
return dt;
}
}二、Vs 2022后台代码
1.登录界面代码
using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class Login : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
string code = TextBox1.Text;
string pwd = TextBox2.Text;
string role = DropDownList1.Text;
if (string.IsNullOrEmpty(code))//判断--是否为空
{
Response.Write("<script>alert('请输入账号');</script>");
return;
}
if (string.IsNullOrEmpty(pwd))
{
Response.Write("<script>alert('请输入密码');</script>");
return;
}
if (string.IsNullOrEmpty(role))
{
Response.Write("<script>alert('请选择用户');</script>");
return;
}
if(role == "管理员")
{
string sql = "select * from AdminTable where code='" + code + "' and pwd='" + pwd + "'";
DataTable table= DAB.ExecuteDataTable(sql);
if(table.Rows.Count > 0)
{
//设置会话
Session["Login_code"] = code;//存储特定的用户会话所需的信息
Session["Login_name"] = table.Rows[0]["name"];
Session["Login_role"] = role;
Response.Write("<script>alert('管理员登记成功');window.location.href='BookManger/Default.aspx';</script>");
Response.Redirect("Default.aspx");
//return;
}
else
{
Response.Write("<script>alert('账号或密码有误');</script>");
return;
}
}
else
{
string sql = "select * from ReadUser where R_code='" + code + "' and R_pwd='" + pwd + "'";
DataTable table = DAB.ExecuteDataTable(sql);
if (table.Rows.Count > 0)
{
Session["Login_code"] = code;
Session["Login_name"] = table.Rows[0]["R_name"];
Session["Login_role"] = role;
Response.Write("<script>alert('读者登录成功');window.location.href='BookManger/Default.aspx';</script>");
Response.Redirect("DefaultUser.aspx");
}
else
{
Response.Write("<script>alert('输入密码有误');</script>");
return;
}
}
}
}2.图书信息界面代码
using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class BookList : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
Button1_Click(null, null);
}
}
protected void Button1_Click(object sender, EventArgs e)
{
string Bname = TextBox1.Text;
string isbn = TextBox2.Text;
string sql = "select * from BookInfo where 1=1";
if (Bname.Length>0)
{
sql += " and Bname like N'%" + Bname + "%'";//模糊查询 %
}
if (isbn.Length > 0)
{
sql += " and ISBN = '" + isbn + "'";
}
//查询数据
DataTable table = DAB.ExecuteDataTable(sql);
GridView1.DataSource = table;
GridView1.DataBind();
}
}3.图书编辑页面代码
using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
//添加功能
public partial class EditBook : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
string id = Request.QueryString["id"];
string sql = "select * from BookInfo where id =" + id;
DataTable table = DAB.ExecuteDataTable(sql);
if (table.Rows.Count > 0)
{
TextBox1.Text = table.Rows[0]["Bname"].ToString();
TextBox2.Text = table.Rows[0]["ISBN"].ToString();
TextBox3.Text = table.Rows[0]["publisher"].ToString();
TextBox4.Text = ((DateTime)table.Rows[0]["publiDate"]).ToString("yyyy-MM-dd");
TextBox5.Text = table.Rows[0]["sl"].ToString();
TextBox6.Text = table.Rows[0]["price"].ToString();
}
else
{
Response.Write("<script>alert('图书信息不存在！');window.location.href='BookInfo.aspx';</script>");//BookManger119HJX/
return;
}
}
}
//添加图书按钮添加事件
protected void Button1_Click(object sender, EventArgs e)
{
string Bname = TextBox1.Text;
string isbn = TextBox2.Text;
string publisher = TextBox3.Text;
string publisDate = TextBox4.Text;
string sl = TextBox5.Text;
string price = TextBox6.Text;
if (Bname.Length <= 0)
{
Response.Write("<script>alert('请输入图书名称');</script>");
return;
}
if (isbn.Length <= 0)
{
Response.Write("<script>alert('请输入ISBN');</script>");
return;
}
if (publisher.Length <= 0)
{
Response.Write("<script>alert('请输入出版社');</script>");
return;
}
if (publisDate.Length <= 0)
{
Response.Write("<script>alert('请输入出版日期');</script>");
return;
}
if (sl.Length <= 0)
{
Response.Write("<script>alert('请输入图书数量');</script>");
return;
}
if (price.Length <= 0)
{
Response.Write("<script>alert('请输入图书单价');</script>");
return;
}
string sql = "update BookInfo set Bname = '" + Bname + "',ISBN='" + isbn + "',publisher='" + publisher + "', publiDate='" + publisDate + "',sl='" + sl + "',price='" + price + "' where id =" + Request.QueryString["id"];
DAB.ExecuteNonQuery(sql);
Response.Write("<script>alert('修改成功');window.location.href='BookManger/BookInfo.aspx';</script>");
Response.Redirect("BookInfo.aspx");//跳转到BookInfo界面。
//return;
}
}4.借阅记录界面代码
using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class BorrowRecord : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
Button1_Click(null, null);
}
}
protected void Button1_Click(object sender, EventArgs e)
{
string U_code = TextBox1.Text;
string U_name = TextBox2.Text;
string sql = "select BookInfo.*, Borrow.id as B_id,Borrow.B_date,Borrow.B_day,Borrow.R_date,Borrow.B_state ,Borrow.B_state,Borrow.U_code,ReadUser.R_name as U_name from BookInfo ,Borrow ,ReadUser where BookInfo.id=Borrow.B_id and borrow.U_code=ReadUser.R_code";
if (U_name.Length>0)
{
sql += " and ReadUser.R_name like N'%" + U_name + "%'";
}
if (U_code.Length > 0)
{
sql += " and U_code = '" + U_code + "'";
}
//查询数据
DataTable table = DAB.ExecuteDataTable(sql);
GridView1.DataSource = table;
GridView1.DataBind();
}
}
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