发布于2023-05-20 21:38 阅读(1356) 评论(0) 点赞(12) 收藏(4)
目录
二、具体实现:利用SQL Sever和 VS实现,使用C#连接数据库
1、新建一个名为MySchool的数据库
2、C#连接数据库,并实现对MySchool数据库的增、删、改、查操作
图1:程序流程图
图2:数据库连接
图3:MySchool数据库
- USE MySchool;
-
- DROP TABLE IF EXISTS SC /*成绩*/
- DROP TABLE IF EXISTS Student /*学生信息*/
- DROP TABLE IF EXISTS Course /*课程*/
- DROP TABLE IF EXISTS StudentUser /*学生用户信息*/
- DROP TABLE IF EXISTS Administrator /*管理员用户信息*/
- DROP TABLE IF EXISTS SysLog /*注册日志*/
- DROP TABLE IF EXISTS SysLog1 /*登陆日志*/
- DROP TABLE IF EXISTS AVG1 /*登陆日志*/
-
- CREATE TABLE StudentUser
- (
- ID NCHAR(20) PRIMARY KEY, /*学号*/
- PassWord NCHAR(32) , /*密码*/
- Sex CHAR(2) , /*性别*/
- Birthday datetime, /*生日*/
- UserMobile NCHAR(11), /*电话号码*/
- );
- CREATE TABLE Administrator
- (
- ID NCHAR(20) PRIMARY KEY, /*工号*/
- PassWord NCHAR(32) , /*密码*/
- Sex CHAR(2), /*性别*/
- Birthday datetime, /*生日*/
- UserMobile NCHAR(11), /*电话号码*/
- );
-
- CREATE TABLE SysLog
- ( [UserMobile]
- UserID NCHAR(20) , /*id*/
- dentity CHAR(20), /*学生或管理员*/
- DateAndTime datetime, /*注册时间*/
- UserOperation NCHAR(200) /*操作方式*/
- );
- CREATE TABLE SysLog1
- (
- UserID NCHAR(20) , /*id*/
- dentity CHAR(20), /*学生或管理员*/
- DateAndTime datetime, /*登陆时间*/
- UserOperation NCHAR(200) /*登陆操作方式*/
- );
-
- CREATE TABLE Student
- (
- Sno CHAR(9) PRIMARY KEY, /* 列级完整性约束条件,Sno是主码*/
- Sname CHAR(20) UNIQUE, /* Sname取唯一值*/
- Ssex CHAR(2), /*性别*/
- Sage SMALLINT, /*年龄*/
- Sdept CHAR(20) /*专业*/
- );
-
- CREATE TABLE Course
- (
- Cno CHAR(4) PRIMARY KEY,
- Cname CHAR(40),
- Cpno CHAR(4),
- Ccredit SMALLINT,
- );
-
- CREATE TABLE SC
- (
- Sno CHAR(9),
- Cno CHAR(4),
- Grade SMALLINT,
- PRIMARY KEY (Sno,Cno), /* 主码由两个属性构成,必须作为表级完整性进行定义*/
- FOREIGN KEY (Sno) REFERENCES Student(Sno), /* 表级完整性约束条件,Sno是外码,被参照表是Student */
- FOREIGN KEY (Cno)REFERENCES Course(Cno) /* 表级完整性约束条件, Cno是外码,被参照表是Course*/
- );
-
- INSERT INTO StudentUser VALUES ('20181101111','123456','女',1999-1-1,'13812345678',NULL);
- INSERT INTO Administrator VALUES ('2018110',substring(sys.fn_sqlvarbasetostr(HashBytes('MD5','123456')),3,32),'女',1989-1-1,'13812345687',NULL);
- INSERT INTO Administrator VALUES ('2018111',substring(sys.fn_sqlvarbasetostr(HashBytes('MD5','123456')),3,32),'女',1989-2-1,'13812655687',NULL);
-
-
- INSERT INTO Student (Sno,Sname,Ssex,Sdept,Sage) VALUES ('201215121','李勇','男','CS',20);
- INSERT INTO Student (Sno,Sname,Ssex,Sdept,Sage) VALUES ('201215122','刘晨','女','CS',19);
- INSERT INTO Student (Sno,Sname,Ssex,Sdept,Sage) VALUES ('201215123','王敏','女','MA',18);
- INSERT INTO Student (Sno,Sname,Ssex,Sdept,Sage) VALUES ('201215125','张立','男','IS',19);
- INSERT INTO Student (Sno,Sname,Ssex,Sdept,Sage) VALUES ('201215128','陈冬','男','IS',20);
-
- SELECT * FROM Student
-
- INSERT INTO Course(Cno,Cname,Cpno,Ccredit) VALUES ('1','数据库',NULL,4);
- INSERT INTO Course(Cno,Cname,Cpno,Ccredit) VALUES ('2','数学',NULL,4);
- INSERT INTO Course(Cno,Cname,Cpno,Ccredit) VALUES ('3','信息系统',NULL,4);
- INSERT INTO Course(Cno,Cname,Cpno,Ccredit) VALUES ('4','操作系统',NULL,4);
- INSERT INTO Course(Cno,Cname,Cpno,Ccredit) VALUES ('5','数据结构',NULL,4);
- INSERT INTO Course(Cno,Cname,Cpno,Ccredit) VALUES ('6','数据处理',NULL,4);
- INSERT INTO Course(Cno,Cname,Cpno,Ccredit) VALUES ('7','Pascal语言',NULL,4);
-
- UPDATE Course SET Cpno = '5' WHERE Cno = '1'
- UPDATE Course SET Cpno = '1' WHERE Cno = '3'
- UPDATE Course SET Cpno = '6' WHERE Cno = '4'
- UPDATE Course SET Cpno = '7' WHERE Cno = '5'
- UPDATE Course SET Cpno = '6' WHERE Cno = '7'
-
- SELECT * FROM Course
-
- INSERT INTO SC(Sno,Cno,Grade) VALUES ('201215121 ','1',92);
- INSERT INTO SC(Sno,Cno,Grade) VALUES ('201215121 ','2',85);
- INSERT INTO SC(Sno,Cno,Grade) VALUES ('201215121 ','3',88);
- INSERT INTO SC(Sno,Cno,Grade) VALUES ('201215122 ','2',90);
- INSERT INTO SC(Sno,Cno,Grade) VALUES ('201215122 ','3',80);
-
- SELECT * FROM SC
-
- --当学生用户信息更新,触发器启动,将更新的内容存至注册日志
- IF(OBJECT_ID('regist_recorder1') is not null) -- 判断名为 regist_recorder 的触发器是否存在
- DROP TRIGGER regist_recorder1 -- 删除触发器
- GO
- CREATE TRIGGER regist_recorder1
- ON StudentUser
- AFTER
- INSERT
- AS
- declare @UserName nchar(20)
- declare @DateTime datetime
- declare @UserOperation nchar(200)
- declare @dentity CHAR(20)
-
- select @UserName = ID FROM StudentUser
- select @DateTime = CONVERT(datetime,GETDATE(),120)
- select @dentity ='StudentUser'
-
- declare @op varchar(10)
- select @op=case when exists(select 1 from inserted) and exists(select 1 from deleted)
- then 'Update'
- when exists(select 1 from inserted) and not exists(select 1 from deleted)
- then 'Insert'
- when not exists(select 1 from inserted) and exists(select 1 from deleted)
- then 'Delete' end
-
-
- select @UserOperation = @op
-
-
- INSERT INTO SysLog(UserID,dentity,DateAndTime,UserOperation)
- VALUES (@UserName,@dentity,@DateTime,@UserOperation)
-
- --当管理员信息更新,触发器启动,将更新的内容存至注册日志
- IF(OBJECT_ID('regist_recorder2') is not null) -- 判断名为 regist_recorder 的触发器是否存在
- DROP TRIGGER regist_recorder2 -- 删除触发器
- GO
- CREATE TRIGGER regist_recorder2
- ON Administrator
- AFTER
- INSERT
- AS
- declare @UserName nchar(20)
- declare @DateTime datetime
- declare @UserOperation nchar(200)
- declare @dentity CHAR(20)
-
- select @UserName = ID FROM Administrator
- select @DateTime = CONVERT(datetime,GETDATE(),120)
- select @dentity ='Administrator'
-
- declare @op varchar(10)
- select @op=case when exists(select 1 from inserted) and exists(select 1 from deleted)
- then 'Update'
- when exists(select 1 from inserted) and not exists(select 1 from deleted)
- then 'Insert'
- when not exists(select 1 from inserted) and exists(select 1 from deleted)
- then 'Delete' end
-
-
- select @UserOperation = @op
-
-
- INSERT INTO SysLog(UserID,dentity,DateAndTime,UserOperation)
- VALUES (@UserName,@dentity,@DateTime,@UserOperation)
-
-
-
-
- --建一个表存储各科平均分
- --建一个表存储各科平均分
- CREATE TABLE AVG1
- (
- Cname CHAR(10), /* 科目*/
- avg1 INT
- );
- INSERT INTO AVG1(Cname,avg1) VALUES ('数据库',NULL);
- INSERT INTO AVG1(Cname,avg1) VALUES ('数学',NULL);
- INSERT INTO AVG1(Cname,avg1) VALUES ('信息系统',NULL);
- INSERT INTO AVG1(Cname,avg1) VALUES ('操作系统',NULL);
- INSERT INTO AVG1(Cname,avg1) VALUES ('数据结构',NULL);
- INSERT INTO AVG1(Cname,avg1) VALUES ('数据处理',NULL);
- INSERT INTO AVG1(Cname,avg1) VALUES ('Pascal语言',NULL);
-
- --将成绩信息通过下列存储过程算出各科平均分并存储至AVG表
- IF (exists (select * from sys.objects where name = 'COURSE_AVG1'))
- DROP PROCEDURE COURSE_AVG1
- GO
- CREATE PROCEDURE COURSE_AVG1
- AS
- BEGIN TRANSACTION TRANS
- DECLARE
- @SX INT, /* 数学总分 */
- @XXXT INT, /* 信息系统总分 */
- @CZXT INT, /* 操作系统总分 */
- @SJJG INT, /* 数据结构总分 */
- @SJK_C INT, /* 数据库总分 */
- @SJCL INT, /*数据处理总分*/
- @P INT /*Pascal语言*/
- SELECT @SX=AVG(Grade) FROM SC
- WHERE Cno='2 '
-
- SELECT @XXXT=AVG(Grade) FROM SC
- WHERE Cno='3'
-
- SELECT @CZXT=AVG(Grade) FROM SC
- WHERE Cno='4'
-
- SELECT @SJJG=AVG(Grade) FROM SC
- WHERE Cno='5'
-
- SELECT @SJK_C=AVG(Grade) FROM SC
- WHERE Cno='1'
- SELECT @SJCL=AVG(Grade) FROM SC
- WHERE Cno='6'
- SELECT @P=AVG(Grade) FROM SC
- WHERE Cno='7'
-
- BEGIN
- UPDATE AVG1 SET avg1=@SJK_C WHERE Cname='数据库'
- UPDATE AVG1 SET avg1=@SX WHERE Cname='数学'
- UPDATE AVG1 SET avg1=@XXXT WHERE Cname='信息系统'
- UPDATE AVG1 SET avg1=@CZXT WHERE Cname='操作系统'
- UPDATE AVG1 SET avg1=@SJJG WHERE Cname='数据结构'
- UPDATE AVG1 SET avg1=@SJCL WHERE Cname='数据处理'
- UPDATE AVG1 SET avg1=@P WHERE Cname='Pascal语言'
- COMMIT TRANSACTION TRANS;
- END

图4:主界面
- using System;
- using System.Collections.Generic;
- using System.ComponentModel;
- using System.Data;
- using System.Drawing;
- using System.Linq;
- using System.Text;
- using System.Threading.Tasks;
- using System.Windows.Forms;
-
- namespace SchoolManage
- {
- public partial class FormLogin : Form
- {
- public FormLogin()
- {
- InitializeComponent();
- }
-
- private void buttonStuLogin_Click(object sender, EventArgs e)
- {
- FormStuLogin FormStuLogin = new FormStuLogin(); //学生登录窗体
- FormStuLogin.Show();//跳转至学生登录窗体
- this.Hide(); //隐藏原窗体
- }
-
- private void buttonManagerLogin_Click(object sender, EventArgs e)
- {
- FormManagerLogin FormManagerLogin = new FormManagerLogin(); //管理员登录窗体
- FormManagerLogin.Show();//跳转至管理员登录窗体
- this.Hide();
- }
-
- private void FormLogin_FormClosing_1(object sender, FormClosingEventArgs e)
- {
-
- }
-
- private void FormLogin_FormClosed(object sender, FormClosedEventArgs e)
- {
- while (MessageBox.Show("即将退出系统,您确认退出吗?", "提示!", MessageBoxButtons.YesNo)== DialogResult.Yes)
- {
- System.Environment.Exit(System.Environment.ExitCode);
- }
-
-
-
- }
-
-
- }
- }

图5:学生登录页面
图6:学生登录成功
图7:学生登录失败
- using System;
- using System.Collections.Generic;
- using System.ComponentModel;
- using System.Data;
- using System.Data.SqlClient;
- using System.Drawing;
- using System.Linq;
- using System.Security.Cryptography;
- using System.Text;
- using System.Threading.Tasks;
- using System.Windows.Forms;
-
- namespace SchoolManage
- {
- public partial class FormStuLogin : Form
- {
- public FormStuLogin()
- {
- InitializeComponent();
- }
-
-
-
- public string code;
-
-
- private string EncryptWithMD5(string source)//MD5加密
- {
- byte[] sor = Encoding.UTF8.GetBytes(source);
- MD5 md5 = MD5.Create();
- byte[] result = md5.ComputeHash(sor);
- StringBuilder strbul = new StringBuilder(40);
- for (int i = 0; i < result.Length; i++)
- {
- strbul.Append(result[i].ToString("x2"));//加密结果"x2"结果为32位,"x3"结果为48位,"x4"结果为64位
- }
- return strbul.ToString();
- }
-
-
- private void buttonLogin_Click(object sender, EventArgs e)
- {
- string username = tBUserName.Text.Trim(); //取出账号
- string password = EncryptWithMD5(tBPassword.Text.Trim()); //取出密码并加密
-
- string myConnString = "Data Source=.;Initial Catalog=MySchool;Persist Security Info=True;User ID=sa;Password=yourpassword";
-
- SqlConnection sqlConnection = new SqlConnection(myConnString); //实例化连接对象
- sqlConnection.Open();
-
- string sql = "select ID,PassWord from StudentUser where ID = '" + username + "' and PassWord = '" + password + "'"; //编写SQL命令
- SqlCommand sqlCommand = new SqlCommand(sql, sqlConnection);
-
- SqlDataReader sqlDataReader = sqlCommand.ExecuteReader();//读取数据
-
- if (sqlDataReader.HasRows && tBVerifyCode.Text == code)//验证是否有该用户及密码且验证码正确
- {
- MessageBox.Show("欢迎使用!"); //登录成功
- StuMain stuMain = new StuMain();
- stuMain.GetId(username);
- stuMain.Show();//显示下一界面
- this.Hide();
- }
- else if (sqlDataReader.HasRows && tBVerifyCode.Text != code)
- {
- MessageBox.Show("验证码错误,登录失败!");
- return;
- }
- else
- {
- MessageBox.Show("账号密码有误,登录失败!");
- return;
- }
- sqlDataReader.Close();
- sql = "insert into SysLog1 values ( '" + username + "' , 'Student','" + DateTime.Now + "' , '" + "Login" + "')"; //编写SQL命令,把登陆信息存入登录日志
- SqlCommand sqlCommand1 = new SqlCommand(sql, sqlConnection);
- sqlCommand1.ExecuteNonQuery();
- sqlConnection.Close();
-
- }
-
-
- private void buttonReg_Click(object sender, EventArgs e)
- {
- this.Hide();
- RegisterForm registerForm = new RegisterForm();
- registerForm.Show();
- }
-
- private void FormStuLogin_Load_1(object sender, EventArgs e)
- {
- //随机实例化
- Random ran = new Random();
- int number;
- char code1;
- //取五个数
- for (int i = 0; i < 5; i++)
- {
- number = ran.Next();
- if (number % 2 == 0)
- code1 = (char)('0' + (char)(number % 10));
- else
- code1 = (char)('A' + (char)(number % 26)); //转化为字符
-
- this.code += code1.ToString();
- }
-
- lbVerifyCode.Text = code;
- }
-
- private void lbVerifyCode_Click(object sender, EventArgs e)
- {
-
- }
-
- private void buttonCancel_Click_1(object sender, EventArgs e)
- {
- this.Close();
- }
-
- private void FormStuLogin_FormClosing_1(object sender, FormClosingEventArgs e)
- {
- FormLogin m2 = new FormLogin();
- m2.Show();
- }
-
- private void lbPassword_Click(object sender, EventArgs e)
- {
-
- }
- }
- }

图8:个人主页——个人信息页
图9:个人主页——成绩单页
- using System;
- using System.Collections.Generic;
- using System.ComponentModel;
- using System.Data;
- using System.Data.SqlClient;
- using System.Drawing;
- using System.IO;
- using System.Linq;
- using System.Text;
- using System.Threading.Tasks;
- using System.Windows.Forms;
-
-
- namespace SchoolManage
- {
- public partial class StuMain : Form
- {
- public StuMain()
- {
- InitializeComponent();
- }
-
- private void buttonExit_Click(object sender, EventArgs e)
- {
- this.Close();
- }
-
-
- string Id;
- public void GetId(string id)//上个窗体调用此函数,将id值传过来
- {
- lbStuId.Text = id;
- lbStuId.Refresh();
- Id = id;
- }
-
-
-
- private void StuMain_Load_1(object sender, EventArgs e)
- {
- // TODO: 这行代码将数据加载到表“mySchoolDataSet.Course”中。您可以根据需要移动或移除它。
- this.courseTableAdapter.Fill(this.mySchoolDataSet.Course);
-
- string name, sex, dept, tel;
- int age;
- string connString = "Data Source=.;Initial Catalog=MySchool;Persist Security Info=True;User ID=sa;Password=yourpassword";//数据库连接字符串
- SqlConnection conn = new SqlConnection(connString);//创建connection对象
- conn.Open();//打开数据库
-
- //创建数据库命令
- SqlCommand cmd = conn.CreateCommand();
- //创建查询语句
- cmd.CommandText = "select * from Student where Sno = '" + Id + "';select * from StudentUser where ID = '" + Id + "'";
- //从数据库中读取数据流存入reader中
- SqlDataReader reader = cmd.ExecuteReader();
-
- //从reader中读取下一行数据,如果没有数据,reader.Read()返回flase
- while (reader.Read())
- {
- name = reader.GetString(reader.GetOrdinal("Sname"));
- sex = reader.GetString(reader.GetOrdinal("Ssex"));
- age = reader.GetInt16(reader.GetOrdinal("Sage"));
- dept = reader.GetString(reader.GetOrdinal("Sdept"));
-
- lbStuName.Text = name;
- lbStuName.Refresh();
- lbStuSex.Text = sex;
- lbStuAge.Text = age.ToString();
- lbStuDept.Text = dept;
- break;
- }
- reader.NextResult();//执行下一句操作
-
-
- //从reader中读取下一行数据,如果没有数据,reader.Read()返回flase
- while (reader.Read())
- {
-
- tel = reader.GetString(reader.GetOrdinal("UserMobile"));
-
- lbPhone.Text = tel;
- break;
- }
-
- reader.Close();
-
-
- SqlDataAdapter dap = new SqlDataAdapter("select * from SC where Sno='" + Id + "'", conn);//查询
- DataSet ds = new DataSet();//创建DataSet对象
- dap.Fill(ds);//填充DataSet数据集
- dataGridView1.DataSource = ds.Tables[0].DefaultView;//显示查询后的数据
- conn.Close();
- int i = 0;
- int x = 0, h = 0;
- int a;
- for (; i < ds.Tables[0].Rows.Count; i++)//读取DataSet中的指定数据
- {
- x += int.Parse(ds.Tables[0].Rows[i][2].ToString());
- if (int.Parse(ds.Tables[0].Rows[i][2].ToString()) > 59)
- h++;
- }
- if (i == 0) a = 0;
- else a = x / i;
- lbPassnum.Text = h.ToString();
- lbAvgSco.Text = a.ToString();
- }
-
- private void StuMain_FormClosing_1(object sender, FormClosingEventArgs e)
- {
- FormLogin m2 = new FormLogin();
- m2.Show();
- }
-
- private void StuMain_FormClosed(object sender, FormClosedEventArgs e)
- {
-
- }
-
-
- }
- }

图10:注册页面
图11:注册成功
图12:注册失败
- using System;
- using System.Collections.Generic;
- using System.ComponentModel;
- using System.Data;
- using System.Data.SqlClient;
- using System.Drawing;
- using System.IO;
- using System.Linq;
- using System.Security.Cryptography;
- using System.Text;
- using System.Text.RegularExpressions;
- using System.Threading.Tasks;
- using System.Windows.Forms;
-
- namespace SchoolManage
- {
- public partial class RegisterForm : Form
- {
- public RegisterForm()
- {
- InitializeComponent();
- }
-
- private void buttonRegister_Click(object sender, EventArgs e)
- {
- if (tBStuId.Text.Trim() != "" && tBPassword.Text.Trim() != "" && cBSex.Text.Trim() != "" && tBPhoneNum.Text.Trim() != "")
- {//确认一些信息输入非空
- try
- {
-
- string connString = "Data Source=.;Initial Catalog=MySchool;Persist Security Info=True;User ID=sa;Password=yourpassword";//数据库连接字符串
- SqlConnection connection = new SqlConnection(connString);//创建connection对象
-
- string username = tBStuId.Text.Trim(); //取出账号
- string sex = cBSex.Text.Trim(); //取出性别
-
-
- connection.Open();
-
- string sql1 = "select Sno,Ssex from Student where Sno = '" + username + "' and Ssex = '" + sex + "'"; //编写SQL命令,查找学生信息中是否有该用户
- SqlCommand sqlCommand1 = new SqlCommand(sql1, connection);//确认是否有该学员
- SqlDataReader sqlDataReader1 = sqlCommand1.ExecuteReader();
- bool a = sqlDataReader1.HasRows;
- sqlDataReader1.Close();
- if (a)
- {
-
- string sql2 = "select ID from StudentUser where ID = '" + username + "'"; //编写SQL命令
- SqlCommand sqlCommand2 = new SqlCommand(sql2, connection);//确认是否已经注册过
- SqlDataReader sqlDataReader2 = sqlCommand2.ExecuteReader();
- if (!sqlDataReader2.HasRows)
- {
- string sql3 = "insert into StudentUser (ID, PassWord ,Sex, UserMobile, Birthday) " +
- "values (@userid, @userpassword,@sex,@usermobile,@Birthday)";
-
- SqlCommand command = new SqlCommand(sql3, connection);
- SqlParameter sqlParameter = new SqlParameter("@userid", tBStuId.Text);
- command.Parameters.Add(sqlParameter);
- sqlParameter = new SqlParameter("@userpassword", EncryptWithMD5(tBPassword.Text));
- command.Parameters.Add(sqlParameter);
- sqlParameter = new SqlParameter("@sex", cBSex.Text);
- command.Parameters.Add(sqlParameter);
- sqlParameter = new SqlParameter("@usermobile", tBPhoneNum.Text);
- command.Parameters.Add(sqlParameter);
- sqlParameter = new SqlParameter("@Birthday", dateTimePicker1.Value);
- command.Parameters.Add(sqlParameter);
- sqlDataReader2.Close();
- //打开数据库连接
-
- command.ExecuteNonQuery();
- connection.Close();
- MessageBox.Show("注册成功");
- }
- else
- {
- MessageBox.Show("该用户已注册。");
- }
-
- }
- else
- {
- MessageBox.Show("我校无该学员");
- }
-
-
-
- }
- catch (Exception ex)
- {
- MessageBox.Show(ex.Message);
- }
-
-
- this.Close();
- }
- else
- {
- MessageBox.Show("请将信息填写完整!");
- }
-
- }
- public Byte[] mybyte = new byte[0];
- public static string EncryptWithMD5(string source)
- {
- byte[] sor = Encoding.UTF8.GetBytes(source);
- MD5 md5 = MD5.Create();
- byte[] result = md5.ComputeHash(sor);
- StringBuilder strbul = new StringBuilder(40);
- for (int i = 0; i < result.Length; i++)
- {
- strbul.Append(result[i].ToString("x2"));//加密结果"x2"结果为32位,"x3"结果为48位,"x4"结果为64位
- }
- return strbul.ToString();
-
- }
-
- private void tBPassword_Leave(object sender, EventArgs e)//校验密码格式
- {
- if (tBStuId.Text.Trim() != "")
- {
- //使用regex(正则表达式)进行格式设置 至少有数字、大写字母、小写字母各一个。最少3个字符、最长20个字符。
- Regex regex = new Regex(@"(?=.*[0-9])(?=.*[a-z])(?=.*[A-Z]).{3,20}");
-
- if (regex.IsMatch(tBPassword.Text))//判断格式是否符合要求
- {
- //MessageBox.Show("输入密码格式正确!");
- }
- else
- {
- MessageBox.Show("至少有数字、大写字母、小写字母各一个。最少3个字符、最长20个字符!");
- tBPassword.Focus();
- }
- }
- else
- {
- MessageBox.Show("请填写密码!");
- }
- }
-
-
- private void RegisterForm_FormClosing(object sender, FormClosingEventArgs e)
- {
- FormStuLogin m2 = new FormStuLogin();
- m2.Show();
- }
-
- private void buttonCancel_Click_1(object sender, EventArgs e)
- {
- this.Close();
- }
- }
- }

图13:管理员登录页面
图14:管理员登录成功
- using System;
- using System.Collections.Generic;
- using System.ComponentModel;
- using System.Data;
- using System.Data.SqlClient;
- using System.Drawing;
- using System.Linq;
- using System.Security.Cryptography;
- using System.Text;
- using System.Threading.Tasks;
- using System.Windows.Forms;
-
- namespace SchoolManage
- {
- public partial class FormManagerLogin : Form
- {
- public FormManagerLogin()
- {
- InitializeComponent();
- }
-
- public string code;
- private void buttonLogin_Click(object sender, EventArgs e)
- {
- string username = tBWorknum.Text.Trim(); //取出账号
- string password = EncryptWithMD5(tBPassword.Text.Trim()); //取出密码并加密
-
- string myConnString = "Data Source=.;Initial Catalog=MySchool;Persist Security Info=True;User ID=sa;Password=yourpassword";
-
- SqlConnection sqlConnection = new SqlConnection(myConnString); //实例化连接对象
- sqlConnection.Open();
-
- string sql = "select ID,PassWord from Administrator where ID = '" + username + "' and PassWord = '" + password + "'"; //编写SQL命令
- SqlCommand sqlCommand = new SqlCommand(sql, sqlConnection);
-
- SqlDataReader sqlDataReader = sqlCommand.ExecuteReader();
-
- if (sqlDataReader.HasRows && tBVerifyCode.Text == code)
- {
- MessageBox.Show("欢迎使用!"); //登录成功
- ManagerMain managerMain = new ManagerMain();
- managerMain.Show();
- this.Hide();
- }
- else if (sqlDataReader.HasRows && tBVerifyCode.Text != code)
- {
- MessageBox.Show("验证码错误,登录失败!");
- return;
- }
- else
- {
- MessageBox.Show("账号密码有误,登录失败!");
- return;
- }
- sqlDataReader.Close();
- sql = "insert into SysLog1 values ( '" + username + "' , 'Administrator','" + DateTime.Now + "' , '" + "Login" + "')"; //编写SQL命令
- SqlCommand sqlCommand1 = new SqlCommand(sql, sqlConnection);
- sqlCommand1.ExecuteNonQuery();
- sqlConnection.Close();
- }
-
- private string EncryptWithMD5(string source)
- {
- byte[] sor = Encoding.UTF8.GetBytes(source);
- MD5 md5 = MD5.Create();
- byte[] result = md5.ComputeHash(sor);
- StringBuilder strbul = new StringBuilder(40);
- for (int i = 0; i < result.Length; i++)
- {
- strbul.Append(result[i].ToString("x2"));//加密结果"x2"结果为32位,"x3"结果为48位,"x4"结果为64位
- }
- return strbul.ToString();
- }
-
-
- private void FormManagerLogin_Load_1(object sender, EventArgs e)
- {
- //随机实例化
- Random ran = new Random();
- int number;
- char code1;
- //取五个数
- for (int i = 0; i < 5; i++)
- {
- number = ran.Next();
- if (number % 2 == 0)
- code1 = (char)('0' + (char)(number % 10));
- else
- code1 = (char)('A' + (char)(number % 26)); //转化为字符
-
- this.code += code1.ToString();
- }
-
- lbVerifyCode.Text = code;
- }
-
- private void FormManagerLogin_FormClosing_1(object sender, FormClosingEventArgs e)
- {
- FormLogin m2 = new FormLogin();
- m2.Show();
- }
-
- private void buttonCancel_Click_1(object sender, EventArgs e)
- {
- this.Close();
- }
- }
- }

图15:管理员主页
- using System;
- using System.Collections.Generic;
- using System.ComponentModel;
- using System.Data;
- using System.Drawing;
- using System.Linq;
- using System.Text;
- using System.Threading.Tasks;
- using System.Windows.Forms;
-
- namespace SchoolManage
- {
- public partial class ManagerMain : Form
- {
- public ManagerMain()
- {
- InitializeComponent();
- }
-
-
-
- private void buttonLog_Click(object sender, EventArgs e)
- {
- this.Hide();
- LogMain m = new LogMain();
- m.Show();
- }
-
- private void buttonStu_Click(object sender, EventArgs e)
- {
- this.Hide();
- StuMessageMain m = new StuMessageMain();
- m.Show();
- }
-
- private void buttonCourse_Click(object sender, EventArgs e)
- {
- this.Hide();
- CourseMessageMain m = new CourseMessageMain();
- m.Show();
- }
-
- private void buttonGrade_Click(object sender, EventArgs e)
- {
- this.Hide();
- StuGradeMain m = new StuGradeMain();
- m.Show();
- }
-
- private void buttonExit_Click(object sender, EventArgs e)
- {
- this.Close();
- }
-
- private void ManagerMain_FormClosed(object sender, FormClosedEventArgs e)
- {
- //Application.Exit();
- }
-
- private void ManagerMain_FormClosing(object sender, FormClosingEventArgs e)
- {
- FormLogin m2 = new FormLogin();
- m2.Show();
- }
-
-
-
- private void ManagerMain_Load(object sender, EventArgs e)
- {
-
- }
- }
- }

图16:登录日志页面
- using System;
- using System.Collections.Generic;
- using System.ComponentModel;
- using System.Data;
- using System.Drawing;
- using System.Linq;
- using System.Text;
- using System.Threading.Tasks;
- using System.Windows.Forms;
-
- namespace SchoolManage
- {
- public partial class LogMain : Form
- {
- public LogMain()
- {
- InitializeComponent();
- }
-
- private void LogMain_Load(object sender, EventArgs e)
- {
- // TODO: 这行代码将数据加载到表“mySchoolDataSet1.SysLog1”中。您可以根据需要移动或移除它。
- this.sysLog1TableAdapter.Fill(this.mySchoolDataSet1.SysLog1);
-
- }
-
- private void buttonReturn_Click(object sender, EventArgs e)
- {
- this.Close();
- }
-
- private void LogMain_FormClosing(object sender, FormClosingEventArgs e)
- {
- ManagerMain m2 = new ManagerMain();
- m2.Show();
- }
- }
- }

图17:学生信息页面
- using System;
- using System.Collections.Generic;
- using System.ComponentModel;
- using System.Data;
- using System.Data.SqlClient;
- using System.Drawing;
- using System.Linq;
- using System.Text;
- using System.Threading.Tasks;
- using System.Windows.Forms;
-
-
- namespace SchoolManage
- {
- public partial class StuMessageMain : Form
- {
- public StuMessageMain()
- {
- InitializeComponent();
- }
-
- private void StuMessageMain_Load(object sender, EventArgs e)
- {
- // TODO: 这行代码将数据加载到表“mySchoolDataSet2.Student”中。您可以根据需要移动或移除它。
- this.studentTableAdapter.Fill(this.mySchoolDataSet2.Student);
-
- }
-
- private void buttonReturn_Click(object sender, EventArgs e)
- {
- this.Close();
- }
-
- private void buttonAdd_Click(object sender, EventArgs e)
- {
- String StuID = tBStuId.Text.Trim();//读取文本框的值
- String StuName = tBStuName.Text.Trim();
- String StuSex = tBStuSex.Text.Trim();
- String StuSdept = tBStuDept.Text.Trim();
- int StuAge = int.Parse(tBStuAge.Text.Trim());
- SqlConnection con = new SqlConnection("Data Source=.;Initial Catalog=MySchool;User ID=sa;Password=yourpassword");
- try
- {
- con.Open();
- string insertStr = "INSERT INTO Student (Sno,Sname,Ssex,Sdept,Sage) " +
- "VALUES ('" + StuID + "','" + StuName + "','" + StuSex + "','" + StuSdept + "'," + StuAge + ")";
- SqlCommand cmd = new SqlCommand(insertStr, con);//通过sql语句对表添加数值
- cmd.ExecuteNonQuery();
- }
- catch
- {
- MessageBox.Show("输入数据违反要求!");
- }
- finally
- {
- con.Dispose();
- tBStuId.Text = "";
- tBStuName.Text = "";
- tBStuSex.Text = "";
- tBStuAge.Text = "";
- tBStuDept.Text = "";
- }
- this.studentTableAdapter.Fill(this.mySchoolDataSet2.Student);//刷新表
- }
-
- private void buttonDelete_Click(object sender, EventArgs e)
- {
- SqlConnection con = new SqlConnection("Data Source=.;Initial Catalog=MySchool;User ID=sa;Password=yourpassword");
- try
- {
- con.Open();
- string select_id = dataGridView1.SelectedRows[0].Cells[0].Value.ToString();//选择的当前行第一列的值,也就是ID
- string delete_by_id = "delete from Student where Sno=" + select_id;//sql删除语句
- SqlCommand cmd = new SqlCommand(delete_by_id, con);
- cmd.ExecuteNonQuery();
- }
- catch
- {
- MessageBox.Show("请正确选择行!");
- }
- finally
- {
- con.Dispose();
-
- }
- this.studentTableAdapter.Fill(this.mySchoolDataSet2.Student);
- }
-
- private void buttonEdit_Click(object sender, EventArgs e)
- {
- String StuID = tBStuId.Text.Trim();
- String StuName = tBStuName.Text.Trim();
- String StuSex = tBStuSex.Text.Trim();
- String StuSdept = tBStuDept.Text.Trim();
- int StuAge = 0;
- if (tBStuAge.Text != "")
- {
- StuAge = int.Parse(tBStuAge.Text.Trim());
- }
-
- SqlConnection con = new SqlConnection("Data Source=.;Initial Catalog=MySchool;User ID=sa;Password=yourpassword");
- try
- {
- con.Open();
- if(StuName != "")
- {
- string insertStr = "UPDATE Student SET Sname = '" + StuName + "' WHERE Sno = '" + StuID + "'";
- SqlCommand cmd = new SqlCommand(insertStr, con);
- cmd.ExecuteNonQuery();
- }
-
- if (StuSex != "")
- {
- string insertStr = "UPDATE Student SET Ssex = '" + StuSex + "' WHERE Sno = '" + StuID + "'";
- SqlCommand cmd = new SqlCommand(insertStr, con);
- cmd.ExecuteNonQuery();
- }
-
- if (StuSdept != "")
- {
- string insertStr = "UPDATE Student SET Sdept = '" + StuSdept + "' WHERE Sno = '" + StuID + "'";
- SqlCommand cmd = new SqlCommand(insertStr, con);
- cmd.ExecuteNonQuery();
- }
-
- if (tBStuAge.Text != "")
- {
- string insertStr = "UPDATE Student SET Sage = '" + StuAge + "' WHERE Sno = '" + StuID + "'";
- SqlCommand cmd = new SqlCommand(insertStr, con);
- cmd.ExecuteNonQuery();
- }
-
-
- }
- catch
- {
- MessageBox.Show("输入数据违反要求!");
- }
- finally
- {
- con.Dispose();
- tBStuId.Text = "";
- tBStuName.Text = "";
- tBStuSex.Text = "";
- tBStuAge.Text = "";
- tBStuDept.Text = "";
- }
- this.studentTableAdapter.Fill(this.mySchoolDataSet2.Student);
-
- }
-
- private void buttonSearch_Click(object sender, EventArgs e)
- {
- String StuID = tBStuId.Text.Trim();
- String conn = "Data Source=.;Initial Catalog=MySchool;User ID=sa;Password=yourpassword";
- SqlConnection sqlConnection = new SqlConnection(conn); //实例化连接对象
- try
- {
- sqlConnection.Open();
- String select_by_id = "select * from Student where Sno='" + StuID + "'";
- SqlCommand sqlCommand = new SqlCommand(select_by_id, sqlConnection);
- SqlDataReader sqlDataReader = sqlCommand.ExecuteReader();
- BindingSource bindingSource = new BindingSource();
- bindingSource.DataSource = sqlDataReader;
- dataGridView1.DataSource = bindingSource;
- }
- catch
- {
- MessageBox.Show("查询语句有误,请认真检查SQL语句!");
- }
- finally
- {
- sqlConnection.Close();
- tBStuId.Text = "";
- }
- }
-
- private void StuMessageMain_FormClosing(object sender, FormClosingEventArgs e)
- {
- ManagerMain m2 = new ManagerMain();
- m2.Show();
- }
- }
- }

图18:课程信息页面
- using System;
- using System.Collections.Generic;
- using System.ComponentModel;
- using System.Data;
- using System.Data.SqlClient;
- using System.Drawing;
- using System.Linq;
- using System.Text;
- using System.Threading.Tasks;
- using System.Windows.Forms;
-
- namespace SchoolManage
- {
- public partial class CourseMessageMain : Form
- {
- public CourseMessageMain()
- {
- InitializeComponent();
- }
-
- private void CourseMessageMain_Load(object sender, EventArgs e)
- {
- // TODO: 这行代码将数据加载到表“mySchoolDataSet3.Course”中。您可以根据需要移动或移除它。
- this.courseTableAdapter.Fill(this.mySchoolDataSet3.Course);
-
- }
-
- private void buttonAdd_Click(object sender, EventArgs e)
- {
- String cno = tBCno.Text.Trim();
- String cn = tBCname.Text.Trim();
- String cpo = tBCpno.Text.Trim();
- int cd = 0;
- if(tBCcredit.Text != "")
- {
- cd = int.Parse(tBCcredit.Text.Trim());
- }
- if (cpo == "")
- {
- cpo = "NULL";
- }
- SqlConnection con = new SqlConnection("Data Source=.;Initial Catalog=MySchool;User ID=sa;Password=yourpassword");
- try
- {
- if(cno == "" || cn =="" || cd == 0)
- {
- MessageBox.Show("输入数据违反要求!");
- }
- else
- {
- con.Open();
- string insertStr = "INSERT INTO Course (Cno,Cname,Cpno,Ccredit) " +
- "VALUES ('" + cno + "','" + cn + "','" + cpo + "','" + cd + "')";
- SqlCommand cmd = new SqlCommand(insertStr, con);
- cmd.ExecuteNonQuery();
- }
-
- }
- catch
- {
-
- }
- finally
- {
- con.Dispose();
- tBCno.Text = "";
- tBCname.Text = "";
- tBCpno.Text = "";
- tBCcredit.Text = "";
- }
- this.courseTableAdapter.Fill(this.mySchoolDataSet3.Course);
-
- }
-
- private void buttonDelete_Click(object sender, EventArgs e)
- {
- SqlConnection con = new SqlConnection("Data Source=.;Initial Catalog=MySchool;User ID=sa;Password=yourpassword");
- try
- {
- con.Open();
- string select_id = dataGridView1.SelectedRows[0].Cells[0].Value.ToString();//选择的当前行第一列的值,也就是ID
- string delete_by_id = "delete from Course where Cno=" + select_id;//sql删除语句
- SqlCommand cmd = new SqlCommand(delete_by_id, con);
- cmd.ExecuteNonQuery();
- }
- catch
- {
- MessageBox.Show("请正确选择行!");
- }
- finally
- {
- con.Dispose();
-
- }
- this.courseTableAdapter.Fill(this.mySchoolDataSet3.Course);
-
- }
-
- private void buttonEdit_Click(object sender, EventArgs e)
- {
- String cno = tBCno.Text.Trim();
- String cn = tBCname.Text.Trim();
- String cpo = tBCpno.Text.Trim();
- int cd = 0;
- if(tBCcredit.Text != "")
- {
- cd = int.Parse(tBCcredit.Text.Trim());
- }
-
- if (cpo == "")
- {
- cpo = "NULL";
- }
- SqlConnection con = new SqlConnection("Data Source=.;Initial Catalog=MySchool;User ID=sa;Password=yourpassword");
-
- con.Open();
-
- if(cn != "")
- {
- string insertStr = "UPDATE Course SET Cname = '" + cn + "' WHERE Cno = '" + cno + "'";
- SqlCommand cmd = new SqlCommand(insertStr, con);
- cmd.ExecuteNonQuery();
- }
-
- if (cpo != "")
- {
- string insertStr = "UPDATE Course SET Cpno = '" + cpo + "' WHERE Cno = '" + cno + "'";
- SqlCommand cmd = new SqlCommand(insertStr, con);
- cmd.ExecuteNonQuery();
- }
-
- if (tBCcredit.Text != "")
- {
- string insertStr = "UPDATE Course SET Ccredit = '" + cd + "' WHERE Cno = '" + cno + "'";
- SqlCommand cmd = new SqlCommand(insertStr, con);
- cmd.ExecuteNonQuery();
- }
-
- if(cno == "")
- {
- MessageBox.Show("输入数据违反要求!");
- }
-
-
- con.Dispose();
- tBCno.Text = "";
- tBCname.Text = "";
- tBCpno.Text = "";
- tBCcredit.Text = "";
-
- this.courseTableAdapter.Fill(this.mySchoolDataSet3.Course);
- }
-
- private void buttonSearch_Click(object sender, EventArgs e)
- {
- String cno = tBCno.Text.Trim();
- String conn = "Data Source=.;Initial Catalog=MySchool;User ID=sa;Password=yourpassword";
- SqlConnection sqlConnection = new SqlConnection(conn); //实例化连接对象
- try
- {
- sqlConnection.Open();
- String select_by_id = "select * from Course where Cno='" + cno + "'";
- SqlCommand sqlCommand = new SqlCommand(select_by_id, sqlConnection);
- SqlDataReader sqlDataReader = sqlCommand.ExecuteReader();
- BindingSource bindingSource = new BindingSource();
- bindingSource.DataSource = sqlDataReader;
- dataGridView1.DataSource = bindingSource;
- }
- catch
- {
- MessageBox.Show("查询语句有误,请认真检查SQL语句!");
- }
- finally
- {
- sqlConnection.Close();
- tBCno.Text = "";
- }
- }
-
- private void buttonReturn_Click(object sender, EventArgs e)
- {
- this.Close();
- }
-
- private void CourseMessageMain_FormClosing(object sender, FormClosingEventArgs e)
- {
- ManagerMain m2 = new ManagerMain();
- m2.Show();
- }
- }
- }

图19:学生成绩信息页面
- using System;
- using System.Collections.Generic;
- using System.ComponentModel;
- using System.Data;
- using System.Data.SqlClient;
- using System.Drawing;
- using System.Linq;
- using System.Text;
- using System.Threading.Tasks;
- using System.Windows.Forms;
-
- namespace SchoolManage
- {
- public partial class StuGradeMain : Form
- {
- public StuGradeMain()
- {
- InitializeComponent();
- }
-
- private void StuGradeMain_Load(object sender, EventArgs e)
- {
- // TODO: 这行代码将数据加载到表“mySchoolDataSet4.SC”中。您可以根据需要移动或移除它。
- this.sCTableAdapter.Fill(this.mySchoolDataSet4.SC);
-
- }
-
- private void buttonAdd_Click(object sender, EventArgs e)
- {
- String sno = tBSId.Text.Trim();
- String cno = tBCno.Text.Trim();
- int gra = int.Parse(tBGrade.Text.Trim());
- SqlConnection con = new SqlConnection("Data Source=.;Initial Catalog=MySchool;User ID=sa;Password=yourpassword");
- try
- {
- con.Open();
- string insertStr = "INSERT INTO SC (Sno,Cno,Grade) " +
- "VALUES ('" + sno + "','" + cno + "','" + gra + "')";
- SqlCommand cmd = new SqlCommand(insertStr, con);
- cmd.ExecuteNonQuery();
- }
- catch
- {
- MessageBox.Show("输入数据违反要求!");
- }
- finally
- {
- con.Dispose();
- tBSId.Text = "";
- tBCno.Text = "";
- tBGrade.Text = "";
- }
- this.sCTableAdapter.Fill(this.mySchoolDataSet4.SC);
-
- }
-
- private void buttonDelete_Click(object sender, EventArgs e)
- {
-
- SqlConnection con = new SqlConnection("Data Source=.;Initial Catalog=MySchool;User ID=sa;Password=yourpassword");
- try
- {
- con.Open();
- string select_id = dataGridView1.SelectedRows[0].Cells[0].Value.ToString();//选择的当前行第一列的值,也就是ID
- string select_cid = dataGridView1.SelectedRows[0].Cells[1].Value.ToString();//选择的当前行第二列的值,也就是CID
- string deletesql = "delete from SC where Sno='" + select_id + "' AND Cno='" + select_cid + "'";//sql删除语句
- SqlCommand cmd = new SqlCommand(deletesql, con);
- cmd.ExecuteNonQuery();
- }
- catch
- {
- MessageBox.Show("请正确选择行!");
- }
- finally
- {
- con.Dispose();
-
- }
- this.sCTableAdapter.Fill(this.mySchoolDataSet4.SC);
-
- }
-
- private void buttonEdit_Click(object sender, EventArgs e)
- {
- String sno = tBSId.Text.Trim();
- String cno = tBCno.Text.Trim();
-
- int gra = int.Parse(tBGrade.Text.Trim());
- SqlConnection con = new SqlConnection("Data Source=.;Initial Catalog=MySchool;User ID=sa;Password=yourpassword");
- try
- {
- con.Open();
- string insertStr = "UPDATE SC SET Grade='" + gra + "' WHERE Sno = '" + sno + "' AND Cno = '" + cno + "'";
- SqlCommand cmd = new SqlCommand(insertStr, con);
- cmd.ExecuteNonQuery();
- }
- catch
- {
- MessageBox.Show("输入数据违反要求!");
- }
- finally
- {
- con.Dispose();
- tBSId.Text = "";
- tBCno.Text = "";
- tBGrade.Text = "";
- }
- this.sCTableAdapter.Fill(this.mySchoolDataSet4.SC);
-
- }
-
- private void buttonSearch_Click(object sender, EventArgs e)
- {
- String sno = tBSId.Text.Trim();
- String cno = tBCno.Text.Trim();
-
- String conn = "Data Source=.;Initial Catalog=MySchool;User ID=sa;Password=yourpassword";
- SqlConnection sqlConnection = new SqlConnection(conn); //实例化连接对象
- try
- {
- String selectsql = "select * from SC where Sno='" + sno + "'";
- sqlConnection.Open();
- if(sno != "" && cno == "")
- {
- selectsql = "select * from SC where Sno='" + sno + "'";
- }
-
- if (sno != "" && cno != "")
- {
- selectsql = "select * from SC where Sno='" + sno + "' AND Cno='" + cno + "'";
- }
-
- SqlCommand sqlCommand = new SqlCommand(selectsql, sqlConnection);
- SqlDataReader sqlDataReader = sqlCommand.ExecuteReader();
- BindingSource bindingSource = new BindingSource();
- bindingSource.DataSource = sqlDataReader;
- dataGridView1.DataSource = bindingSource;
- }
- catch
- {
- MessageBox.Show("查询语句有误,请认真检查SQL语句!");
- }
- finally
- {
- sqlConnection.Close();
- tBSId.Text = "";
- tBCno.Text = "";
- }
- }
-
- private void buttonMes_Click(object sender, EventArgs e)
- {
- string connString = "Data Source=.;Initial Catalog=MySchool;Persist Security Info=True;User ID=sa;Password=yourpassword";//数据库连接字符串
- SqlConnection connection = new SqlConnection(connString);//创建connection对象
- string sql1 = "EXEC COURSE_AVG1";//编写SQL命令
- SqlCommand sqlCommand1 = new SqlCommand(sql1, connection);
- connection.Open();
- sqlCommand1.ExecuteNonQuery();
- connection.Close();
- this.Hide();
- StatisiticMain m2 = new StatisiticMain();
- m2.Show();
-
- }
-
- private void buttonReturn_Click(object sender, EventArgs e)
- {
- this.Close();
- }
-
- private void StuGradeMain_FormClosing(object sender, FormClosingEventArgs e)
- {
- ManagerMain m2 = new ManagerMain();
- m2.Show();
- }
- }
- }

图20:成绩统计页面
- using System;
- using System.Collections.Generic;
- using System.ComponentModel;
- using System.Data;
- using System.Data.SqlClient;
- using System.Drawing;
- using System.Linq;
- using System.Text;
- using System.Threading.Tasks;
- using System.Windows.Forms;
-
- namespace SchoolManage
- {
- public partial class StatisiticMain : Form
- {
- public StatisiticMain()
- {
- InitializeComponent();
- }
-
- private void StatisiticMain_Load(object sender, EventArgs e)
- {
- // TODO: 这行代码将数据加载到表“mySchoolDataSet6.AVG1”中。您可以根据需要移动或移除它。
- this.aVG1TableAdapter.Fill(this.mySchoolDataSet6.AVG1);
-
-
- }
-
- private void buttonReturn_Click(object sender, EventArgs e)
- {
- this.Close();
-
- }
-
- private void StatisiticMain_FormClosing(object sender, FormClosingEventArgs e)
- {
- StuGradeMain m2 = new StuGradeMain();
- m2.Show();
- }
- }
- }

图21:退出系统
以上就是本次数据库课程设计的全部内容啦,欢迎小伙伴们交流心得,批评指正。
原文链接:https://blog.csdn.net/qq_47403671/article/details/125084509
作者:php程序员
链接:http://www.phpheidong.com/blog/article/546099/34a46c6878ec32bc0c5a/
来源:php黑洞网
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