c#实现学生考勤系统（附源码和报告）

课设功能描述

该学生考勤系统包含了登录、注册、学生端的请假功能，教师端对学生信息的增删改查和批假功能。

一、数据库操作类

该类主要用于后面一些功能需要对数据库操作，即需要对数据库操作的话，直接调用该类即可。

using System;
using System.Collections.Generic;
using System.Text;
using MySql.Data.MySqlClient;
namespace 学生考勤系统的设计
{// 访问数据库的类class MySqlAccess{//定义mysql连接字符串private static string constring = "data source = localhost; database = student_attendance_system; user id = root; password = 0915; pooling = true; charset = utf8; port=3306;";//连接mysqlprivate static MySqlConnection msc = new MySqlConnection(constring);// 返回用于实现mysql命令的对象public static MySqlCommand GetMySqlCommand(string sql){//打开数据库连接if (msc.State == System.Data.ConnectionState.Closed)msc.Open();return new MySqlCommand(sql, msc);}public static MySqlDataAdapter GetMySqlDataAdapter(string sql){//打开数据库连接if (msc.State == System.Data.ConnectionState.Closed)msc.Open();return new MySqlDataAdapter(sql, msc);}}
}

二、登录、注册功能

该功能实现起来其实也也并不是很难，登录的话，只要读取数据库的用户表，然后和输入的用户名和密码进行匹配即可，在根据该用户表的身身份字段，进入不同的客户端。
注册的话，如果操作正确，只需对数据库的用户表增加操作就行了。

1. 登录代码及截图

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;
using MySql.Data.MySqlClient;namespace 学生考勤系统的设计
{public partial class Login_Form : Form{//static public Login_Form login = new Login_Form(); //静态化主窗口public static string userName;public static string userIdentity;public Login_Form(){InitializeComponent();}private void button1_Click(object sender, EventArgs e){//定义sql语句string sql = "select * from subscribers";//调用MySqlAccess类获得实现mysql语句对象MySqlCommand cmd = MySqlAccess.GetMySqlCommand(sql);//执行命令MySqlDataReader reader = cmd.ExecuteReader();//读取数据bool flag1 = false, flag2 = false;while (reader.Read()){if (reader.GetString("id").Equals(User_Name.Text)){flag1 = true;if (reader.GetString("user_password").Equals(User_Password.Text)){flag2 = true;userName = reader.GetString(0);userIdentity = reader.GetString(2);}}if (flag1 && flag2)break;}reader.Close();if (flag1 && flag2){if(userIdentity == "学生"){Student_Form student_Form = new Student_Form();this.Hide();student_Form.ShowDialog();this.Close();}else if(userIdentity == "管理员"){Admin_Form admin_Form = new Admin_Form();this.Hide();admin_Form.ShowDialog();this.Close();}else{Teacher_Form teacher_Form = new Teacher_Form();this.Hide();teacher_Form.ShowDialog();this.Close();}}else{if (!flag1)MessageBox.Show("用户名错误");elseMessageBox.Show("密码错误");}}private void label1_Click(object sender, EventArgs e){}private void button2_Click(object sender, EventArgs e){Register_Form register_Form = new Register_Form();register_Form.ShowDialog();}}
}

2. 注册代码及截图

注册主要用于教师、辅导员、领导、院长注册，学生有教师端添加，并且点击注册时也会弹出邀请码框，邀请码由管理员生成。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;namespace 学生考勤系统的设计
{public partial class Register_Form : Form{public Register_Form(){InitializeComponent();}private void button1_Click(object sender, EventArgs e){textBox1.Clear();textBox2.Clear();textBox3.Clear();}private void button2_Click(object sender, EventArgs e){if(comboBox1.Text .Equals(string.Empty)){MessageBox.Show("请选择身份！");return;}if(textBox1.Text.Equals(string.Empty)){MessageBox.Show("用户名不能为空");return;}if (textBox2.Text.Equals(string.Empty)){MessageBox.Show("密码不能为空");return;}if (textBox2.Text != textBox3.Text){MessageBox.Show("密码不一致！");return;}Captcha_Form captcha_Form = new Captcha_Form();DialogResult dialogResult = captcha_Form.ShowDialog();if (dialogResult != DialogResult.OK){MessageBox.Show("注册失败！");return;}try { string sql = "insert into subscribers values('{0}', '{1}', '{2}')";sql = string.Format(sql, textBox1.Text, textBox2.Text, comboBox1.Text);//MessageBox.Show(sql);MySqlAccess.GetMySqlCommand(sql).ExecuteNonQuery();MessageBox.Show("注册成功!");}catch(Exception ex){MessageBox.Show("用户已存在！");}}}
}

三、学生端

学生端的主页面会显示该学生的基本信息，并且有一个请假功能

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using MySql.Data.MySqlClient;namespace 学生考勤系统的设计
{public partial class Student_Form : Form{public Student_Form(){InitializeComponent();}private void Student_From_Load(object sender, EventArgs e){TableShow();}private void TableShow(){string userName = Login_Form.userName;string sql = "select student_id,student_name,class,specialty,phone_number,absence_count,late_count,early_count from student_infomation where student_id = '" + userName + "'";//MySqlCommand cmd = MySqlAccess.GetMySqlCommand(sql);//MySqlDataReader reader = cmd.ExecuteReader();//创建MySqlDataAdapter对象MySqlDataAdapter mySqlData = MySqlAccess.GetMySqlDataAdapter(sql);//创建DataSet对象DataSet ds = new DataSet();//使用MySqlDataAdapter对象mySqlData将查到的结果填充到DataSet对象中mySqlData.Fill(ds);//设置表格控件DataSource的属性dataGridView1.DataSource = ds.Tables[0];//设置列标题dataGridView1.Columns[0].HeaderText = "学号";dataGridView1.Columns[1].HeaderText = "姓名";dataGridView1.Columns[2].HeaderText = "班级";dataGridView1.Columns[3].HeaderText = "专业";dataGridView1.Columns[4].HeaderText = "电话";dataGridView1.Columns[5].HeaderText = "旷课次数";dataGridView1.Columns[6].HeaderText = "迟到次数";dataGridView1.Columns[7].HeaderText = "早退次数";//设置数据表格为只读dataGridView1.ReadOnly = true;//不允许添加行dataGridView1.AllowUserToAddRows = false;//背景为白色dataGridView1.BackgroundColor = Color.White;//只允许选中单行dataGridView1.MultiSelect = false;//整行选中dataGridView1.SelectionMode = DataGridViewSelectionMode.FullRowSelect;}private void button1_Click(object sender, EventArgs e){Leave leave = new Leave();leave.ShowDialog();}private void button2_Click(object sender, EventArgs e){Login_Form lf = new Login_Form();this.Hide();lf.ShowDialog();this.Close();}private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e){}}
}

请假功能

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using MySql.Data.MySqlClient;namespace 学生考勤系统的设计
{public partial class Leave : Form{public Leave(){InitializeComponent();}private void button2_Click(object sender, EventArgs e){bool tut_leave = false, ter_leave = false, lea_leave = false, dean_leave = false;string leaveTime;string leaveReason;//判断是否被选中if (radioButton1.Checked){leaveTime = radioButton1.Text;ter_leave = true;}else if (radioButton2.Checked){leaveTime = radioButton2.Text;tut_leave = true;}else if (radioButton3.Checked){leaveTime = radioButton3.Text; ;tut_leave = true;lea_leave = true;}else{leaveTime = radioButton4.Text;tut_leave = true;lea_leave = true;dean_leave = true;}leaveReason = textBox1.Text;try{//获取当前用户名string userName = Login_Form.userName;//定义sql语句，修改请假状态string sql1, sql2, sql3;// 更新请假状态表sql2 = "insert into leave_state values({0}, {1}, {2}, {3}, {4})";sql2 = string.Format(sql2, userName, tut_leave, ter_leave, lea_leave, dean_leave);//MessageBox.Show(sql2);MySqlAccess.GetMySqlCommand(sql2).ExecuteNonQuery(); // 获取并执行// 更新学生表里的请假时长sql1 = "update student_infomation set leave_state = '" + leaveTime + "' where student_id = '" + userName + "'";//获取实现sql命令的对象MySqlCommand cmd = MySqlAccess.GetMySqlCommand(sql1);//执行命令cmd.ExecuteNonQuery();sql3 = "update student_infomation set leave_reason = '" + leaveReason + "' where student_id = '" + userName + "'";MySqlAccess.GetMySqlCommand(sql3).ExecuteNonQuery();MessageBox.Show("提交成功");this.Close();}catch(Exception ex){MessageBox.Show("你已经提交过申请");}}}
}

四、管理端

管理端只包含一个生成邀请码的功能，生成的邀请码用于注册

五、教师端

教师端保函对学生信息的增删改查，修改和增加学生信息时，出勤率会自动更新，增加学生时，也会给给该学生自动生成一个账号，账号为学号，密码为123456，并且也会显示未读的消息。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using MySql.Data.MySqlClient;namespace 学生考勤系统的设计
{public partial class Teacher_Form : Form{public Teacher_Form(){InitializeComponent();}private void Student_Form_Load(object sender, EventArgs e){//设置数据表格为只读dataGridView1.ReadOnly = true;//不允许添加行dataGridView1.AllowUserToAddRows = false;//背景为白色dataGridView1.BackgroundColor = Color.White;//只允许选中单行dataGridView1.MultiSelect = false;//整行选中dataGridView1.SelectionMode = DataGridViewSelectionMode.FullRowSelect;ShowAllInofmation();UnreadMessage();}//显示所有学生信息private void ShowAllInofmation(){string sql = "select student_id,student_name,class,specialty,phone_number,absence_count,late_count,early_count,attendance from student_infomation";MySqlDataAdapter mySqlData = MySqlAccess.GetMySqlDataAdapter(sql);DataSet dataSet = new DataSet();mySqlData.Fill(dataSet);dataGridView1.DataSource = dataSet.Tables[0];//设置列标题dataGridView1.Columns[0].HeaderText = "学号";dataGridView1.Columns[1].HeaderText = "姓名";dataGridView1.Columns[2].HeaderText = "班级";dataGridView1.Columns[3].HeaderText = "专业";dataGridView1.Columns[4].HeaderText = "电话";dataGridView1.Columns[5].HeaderText = "旷课次数";dataGridView1.Columns[6].HeaderText = "迟到次数";dataGridView1.Columns[7].HeaderText = "早退次数";dataGridView1.Columns[8].HeaderText = "出勤率";}private void button4_Click(object sender, EventArgs e){if (textBox1.Text.Equals(string.Empty) && textBox2.Text.Equals(string.Empty))MessageBox.Show("学号或姓名不能为空");else{string sql = "";if(!textBox1.Text.Equals(string.Empty))sql = "select student_id,student_name,class,specialty,phone_number,absence_count,late_count,early_count,attendance from student_infomation where student_id = '" + textBox1.Text + "'";elsesql = "select student_id,student_name,class,specialty,phone_number,absence_count,late_count,early_count,attendance from student_infomation where student_name = '" + textBox2.Text + "'";try{MySqlDataAdapter mySqlData = MySqlAccess.GetMySqlDataAdapter(sql);DataSet dataSet = new DataSet();mySqlData.Fill(dataSet);dataGridView1.DataSource = dataSet.Tables[0];}catch(Exception ex){MessageBox.Show("查询失败！\n" + ex.Message);}}textBox1.Clear();textBox2.Clear();}private void button5_Click(object sender, EventArgs e){ShowAllInofmation();}private void button2_Click(object sender, EventArgs e){//获取DataGridView控件的值//获取学号string id = dataGridView1.SelectedRows[0].Cells[0].Value.ToString();//获取姓名string name = dataGridView1.SelectedRows[0].Cells[1].Value.ToString();//获取班级string Class = dataGridView1.SelectedRows[0].Cells[2].Value.ToString();//获取专业string specialty = dataGridView1.SelectedRows[0].Cells[3].Value.ToString();//获取电话string phone = dataGridView1.SelectedRows[0].Cells[4].Value.ToString();//获取缺席次数string absenceCount = dataGridView1.SelectedRows[0].Cells[5].Value.ToString();//获取迟到次数string lateCount = dataGridView1.SelectedRows[0].Cells[6].Value.ToString();//获取早退次数string leaveCount = dataGridView1.SelectedRows[0].Cells[7].Value.ToString();//创建Update_Form窗口，把学生信息传递给修改界面Update_Form update_Form = new Update_Form(id, name, Class, specialty, phone, absenceCount, lateCount, leaveCount);// 弹出修改信息修改窗口DialogResult dialogResult = update_Form.ShowDialog();//DialogResult：获取或设置对话框值，此值是从ShowDialog()方法返回//判断是否点击确定按钮if (dialogResult == DialogResult.OK)  ShowAllInofmation();}private void button3_Click(object sender, EventArgs e){try{//获取DataGridView控件中选中行的学号string id = dataGridView1.SelectedRows[0].Cells[0].Value.ToString();string sql = "delete from student_infomation where student_id = '{0}'";sql = string.Format(sql, id);MySqlCommand cmd = MySqlAccess.GetMySqlCommand(sql);cmd.ExecuteNonQuery();MessageBox.Show("删除成功");ShowAllInofmation();}catch(Exception ex){MessageBox.Show("删除失败！\n" + ex.Message);}}private void button1_Click(object sender, EventArgs e){Insert_Form insert_Form = new Insert_Form();DialogResult dialogResult = insert_Form.ShowDialog();if (dialogResult == DialogResult.OK)ShowAllInofmation();}private void button7_Click(object sender, EventArgs e){Login_Form login_Form = new Login_Form();this.Hide();login_Form.ShowDialog();this.Close();}private void button6_Click(object sender, EventArgs e){ApprovalLeave_Form approvalLeave_Form = new ApprovalLeave_Form();approvalLeave_Form.ShowDialog();UnreadMessage();}//显示未读信息private void UnreadMessage(){string sql;if (Login_Form.userIdentity == "辅导员")sql = "select count(*) from leave_state where tut_leave = true";else if (Login_Form.userIdentity == "教师")sql = "select count(*) from leave_state where ter_leave = true";else if (Login_Form.userIdentity == "领导")sql = "select count(*) from leave_state where lea_leave = true";elsesql = "select count(*) from leave_state where dean_leave = true";MySqlDataReader reader = MySqlAccess.GetMySqlCommand(sql).ExecuteReader();reader.Read();string num = reader.GetString(0);reader.Close();if (num == "0"){label3.Visible = false;}elselabel3.Text = num;}}
}

1. 录入学生信息

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using MySql.Data.MySqlClient;namespace 学生考勤系统的设计
{public partial class Insert_Form : Form{public Insert_Form(){InitializeComponent();}private void button1_Click(object sender, EventArgs e){this.Close();}private void button2_Click(object sender, EventArgs e){if (textBox1.Text.Equals(string.Empty) || textBox2.Text.Equals(string.Empty) || textBox3.Text.Equals(string.Empty) || textBox4.Text.Equals(string.Empty) ||textBox5.Text.Equals(string.Empty) || textBox6.Text.Equals(string.Empty) ||textBox7.Text.Equals(string.Empty) || textBox8.Text.Equals(string.Empty)){MessageBox.Show("信息不能为空");return ; }string sql = "insert into student_infomation(student_id, student_name, class, specialty, phone_number, absence_count, late_count, early_count) values('{0}', '{1}', '{2}', '{3}', '{4}', {5}, {6}, {7})";sql = string.Format(sql, textBox1.Text, textBox2.Text, textBox3.Text, textBox4.Text, textBox5.Text, textBox6.Text, textBox7.Text, textBox8.Text);try{MySqlCommand cmd = MySqlAccess.GetMySqlCommand(sql);cmd.ExecuteNonQuery();MessageBox.Show("添加成功");DialogResult = DialogResult.OK;}catch(Exception ex){MessageBox.Show("添加失败!\n");}}}
}

2. 删除学生信息

 private void button3_Click(object sender, EventArgs e){try{//获取DataGridView控件中选中行的学号string id = dataGridView1.SelectedRows[0].Cells[0].Value.ToString();string sql = "delete from student_infomation where student_id = '{0}'";sql = string.Format(sql, id);MySqlCommand cmd = MySqlAccess.GetMySqlCommand(sql);cmd.ExecuteNonQuery();MessageBox.Show("删除成功");ShowAllInofmation();}catch(Exception ex){MessageBox.Show("删除失败！\n" + ex.Message);}}

3. 修改学生

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using MySql.Data.MySqlClient;namespace 学生考勤系统的设计
{public partial class Update_Form : Form{private string id;public Update_Form(string id, string name, string Class, string specialty, string phone, string absenceCount, string lateCount, string leaveCount){InitializeComponent();textBox1.Text = name;textBox2.Text = Class;textBox3.Text = specialty;textBox4.Text = phone;textBox5.Text = absenceCount;textBox6.Text = lateCount;textBox7.Text = leaveCount;this.id = id;}private void button2_Click(object sender, EventArgs e){string sql = "update student_infomation set student_name = '{0}', class = '{1}', specialty = '{2}', phone_number = '{3}', absence_count = {4}, late_count = {5}, early_count = {6} where student_id = '{7}'";sql = string.Format(sql, textBox1.Text, textBox2.Text, textBox3.Text, textBox4.Text, textBox5.Text, textBox6.Text, textBox7.Text, id);try{MySqlCommand cmd = MySqlAccess.GetMySqlCommand(sql);cmd.ExecuteNonQuery();MessageBox.Show("修改成功");this.DialogResult = DialogResult.OK;this.Close();}catch(Exception ex){MessageBox.Show("修改失败！\n" + ex.Message);}}private void button1_Click(object sender, EventArgs e){this.Close();}}
}

4. 查询学生

 private void button4_Click(object sender, EventArgs e){if (textBox1.Text.Equals(string.Empty) && textBox2.Text.Equals(string.Empty))MessageBox.Show("学号或姓名不能为空");else{string sql = "";if(!textBox1.Text.Equals(string.Empty))sql = "select student_id,student_name,class,specialty,phone_number,absence_count,late_count,early_count,attendance from student_infomation where student_id = '" + textBox1.Text + "'";elsesql = "select student_id,student_name,class,specialty,phone_number,absence_count,late_count,early_count,attendance from student_infomation where student_name = '" + textBox2.Text + "'";try{MySqlDataAdapter mySqlData = MySqlAccess.GetMySqlDataAdapter(sql);DataSet dataSet = new DataSet();mySqlData.Fill(dataSet);dataGridView1.DataSource = dataSet.Tables[0];}catch(Exception ex){MessageBox.Show("查询失败！\n" + ex.Message);}}textBox1.Clear();textBox2.Clear();}

5. 批假功能

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using MySql.Data.MySqlClient;namespace 学生考勤系统的设计
{public partial class ApprovalLeave_Form : Form{public ApprovalLeave_Form(){InitializeComponent();}private void ShowLeaveInfo(){string sql;if (Login_Form.userIdentity == "教师")sql = "select student_id, student_name, leave_state, leave_reason from student_infomation where student_id = any(select stu_id from leave_state where ter_leave = true)";else if (Login_Form.userIdentity == "院长")sql = "select student_id, student_name, leave_state, leave_reason from student_infomation where student_id = any(select stu_id from leave_state where dean_leave = true)";else if (Login_Form.userIdentity == "领导")sql = "select student_id, student_name, leave_state, leave_reason from student_infomation where student_id = any(select stu_id from leave_state where lea_leave = true)";elsesql = "select student_id, student_name, leave_state, leave_reason from student_infomation where student_id = any(select stu_id from leave_state where tut_leave = true)";try{MySqlDataAdapter mySqlData = MySqlAccess.GetMySqlDataAdapter(sql);DataSet dataSet = new DataSet();mySqlData.Fill(dataSet);dataGridView1.DataSource = dataSet.Tables[0];}catch(Exception ex){MessageBox.Show("系统错误！\n" + ex.Message);}dataGridView1.Columns[0].HeaderText = "学号";dataGridView1.Columns[1].HeaderText = "姓名";dataGridView1.Columns[2].HeaderText = "请假时长";dataGridView1.Columns[3].HeaderText = "请假理由";}private void ApprovalLeave_Form_Load(object sender, EventArgs e){//设置数据表格为只读dataGridView1.ReadOnly = true;//不允许添加行dataGridView1.AllowUserToAddRows = false;//背景为白色dataGridView1.BackgroundColor = Color.White;//只允许选中单行dataGridView1.MultiSelect = false;//整行选中dataGridView1.SelectionMode = DataGridViewSelectionMode.FullRowSelect;ShowLeaveInfo();}private void button1_Click(object sender, EventArgs e){try{string id = dataGridView1.SelectedRows[0].Cells[0].Value.ToString();string sql = "update leave_state set {0} = false where stu_id = '{1}'";if (Login_Form.userIdentity == "教师")sql = String.Format(sql, "ter_leave", id);else if (Login_Form.userIdentity == "院长")sql = String.Format(sql, "dean_leave", id);else if (Login_Form.userIdentity == "领导")sql = String.Format(sql, "lea_leave", id);else if (Login_Form.userIdentity == "辅导员")sql = string.Format(sql, "tut_leave", id);MySqlCommand cmd = MySqlAccess.GetMySqlCommand(sql);cmd.ExecuteNonQuery();ShowLeaveInfo();MessageBox.Show("成功！");ShowLeaveInfo();//判改学生是否请假成功，如果成功，删除改名学生在数据库中leave_state的数据sql = "select * from leave_state where stu_id = '{0}'";sql = string.Format(sql, id);MySqlDataReader reader = MySqlAccess.GetMySqlCommand(sql).ExecuteReader();reader.Read();bool flag1 = reader.GetBoolean(1);bool flag2 = reader.GetBoolean(2);bool flag3 = reader.GetBoolean(3);bool flag4 = reader.GetBoolean(4);reader.Close();//还需要在审核if (flag1 || flag2 || flag3 || flag4)return;// 不需审核，删掉数据sql = "delete from leave_state where stu_id = '{0}'";sql = string.Format(sql, id);MySqlAccess.GetMySqlCommand(sql).ExecuteNonQuery();}catch(Exception ex){MessageBox.Show("失败\n" + ex.Message);}}}
}

源码及报告

https://download.csdn.net/download/weixin_52068218/87337349

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