C#语言实现《学生成绩管理系统》

学生成绩管理系统C#

江宏晖

 

       这篇作品是本作者在校大二期间学习C#与数据库时自我训练所写的一个项目,主要是为了自学自练,当然如果能对部分同学有一定帮助的话那也是本人的荣幸。

      这次数据库自编项目,使我掌握了C#的编写技巧以及SQLServer数据库和VS的链接方式,其中遇到过不少的难题,但是只要抓住思路检查之后还是能做到及时纠正,对每个部分了解是极为重要的一点。

     由于时隔久远,电脑中关于数据库的部分模块被遗漏了,望各位大牛小牛们理解啦。

一、 项目诉求:

      创建一个VS项目连接数据库,项目为学生成绩管理系统,其中包含登录、开课情况查询、学生成绩查询、学生信息维护、学生成绩维护以及帮助等主要内容。

分为两端:因用户权限不同,分别为普通用户端以及管理员端。

二、项目平台

PCVS2012SQLServer 2008R2


三、主要代码以及运行截图演示

C#语言实现《学生成绩管理系统》_第1张图片

Login.cs

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 System.Data.SqlClient;

using System.Data.Odbc;

 

namespace student_test1

{

    public partial class 学生成绩查询 : Form

    {

        public 学生成绩查询()

        {

            InitializeComponent();

        }

 

        private void 学生成绩查询_Load(object sender, EventArgs e)

        {

            // TODO: 这行代码将数据加载到表“dataSet1.cjpm”中。您可以根据需要移动或删除它。

            this.cjpmTableAdapter.Fill(this.dataSet1.cjpm);

 

        }

 

        private void chaxun_Click(object sender, EventArgs e)

        {

            string str = "dsn=jhh;uid=sa;pwd=sa";

 

            string sqlstr = "select cjpm.学号,cjpm.姓名,cjpm.班级,cjpm.总分,cjpm.排名 from cjpm where  cjpm.学号='" + xuehao.Text.Trim() + "'";

            OdbcConnection conn = new OdbcConnection(str);

            conn.Open();

            OdbcDataAdapter da = new OdbcDataAdapter(sqlstr, conn);

            DataSet qa = new DataSet();

            da.Fill(qa, "学生成绩表");

            DataTable dt = qa.Tables["学生成绩表"];

            dataGridView1.DataSource = dt;

            conn.Close();

 

        }

 

        private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)

        {

 

        }

 

 

    }

}

C#语言实现《学生成绩管理系统》_第2张图片

MDIparent1.cs

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 student_test1

{

    public partial class MDIParent1 : Form

    {

        private int childFormNumber = 0;

 

        public MDIParent1()

        {

            InitializeComponent();

        }

 

        private void ShowNewForm(object sender, EventArgs e)

        {

            Form childForm = new Form();

            childForm.MdiParent = this;

            childForm.Text = "窗口 " + childFormNumber++;

            childForm.Show();

        }

 

        private void OpenFile(object sender, EventArgs e)

        {

            OpenFileDialog openFileDialog = new OpenFileDialog();

            openFileDialog.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.Personal);

            openFileDialog.Filter = "文本文件(*.txt)|*.txt|所有文件(*.*)|*.*";

            if (openFileDialog.ShowDialog(this) == DialogResult.OK)

            {

                string FileName = openFileDialog.FileName;

            }

        }

 

        private void SaveAsToolStripMenuItem_Click(object sender, EventArgs e)

        {

            SaveFileDialog saveFileDialog = new SaveFileDialog();

            saveFileDialog.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.Personal);

            saveFileDialog.Filter = "文本文件(*.txt)|*.txt|所有文件(*.*)|*.*";

            if (saveFileDialog.ShowDialog(this) == DialogResult.OK)

            {

                string FileName = saveFileDialog.FileName;

            }

        }

 

        private void ExitToolsStripMenuItem_Click(object sender, EventArgs e)

        {

            this.Close();

        }

 

       

     

 

        private void CloseAllToolStripMenuItem_Click(object sender, EventArgs e)

        {

            foreach (Form childForm in MdiChildren)

            {

                childForm.Close();

            }

        }

 

        private void 退出系统ToolStripMenuItem_Click(object sender, EventArgs e)

        {

            this.Close();

        }

 

        private void 帮助ToolStripMenuItem_Click(object sender, EventArgs e)

        {

            help u = new help();

            u.Show();

        }

 

        

        private void 开课情况查询ToolStripMenuItem_Click(object sender, EventArgs e)

        {

            开课情况查询 k = new 开课情况查询();

            k.Show();

        }

 

        

 

        private void MDIParent1_Load(object sender, EventArgs e)

        {

 

        }

 

        private void 学习成绩查询ToolStripMenuItem_Click(object sender, EventArgs e)

        {

            学生成绩查询 q = new 学生成绩查询();

            q.Show();

        }

 

        private void 学生信息维护ToolStripMenuItem_Click(object sender, EventArgs e)

        {

            学生信息维护 w = new 学生信息维护();

            w.Show();

        }

 

        private void 学生成绩维护ToolStripMenuItem_Click(object sender, EventArgs e)

        {

            学生成绩维护 y = new 学生成绩维护();

            y.Show();

        }

 

    }

}

 

 

        MDIparent2.cs

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 student_test1

{

    public partial class MDIParent2 : Form

    {

        private int childFormNumber = 0;

 

        public MDIParent2()

        {

            InitializeComponent();

        }

 

        private void ShowNewForm(object sender, EventArgs e)

        {

            Form childForm = new Form();

            childForm.MdiParent = this;

            childForm.Text = "窗口 " + childFormNumber++;

            childForm.Show();

        }

 

        private void OpenFile(object sender, EventArgs e)

        {

            OpenFileDialog openFileDialog = new OpenFileDialog();

            openFileDialog.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.Personal);

            openFileDialog.Filter = "文本文件(*.txt)|*.txt|所有文件(*.*)|*.*";

            if (openFileDialog.ShowDialog(this) == DialogResult.OK)

            {

                string FileName = openFileDialog.FileName;

            }

        }

 

        private void SaveAsToolStripMenuItem_Click(object sender, EventArgs e)

        {

            SaveFileDialog saveFileDialog = new SaveFileDialog();

            saveFileDialog.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.Personal);

            saveFileDialog.Filter = "文本文件(*.txt)|*.txt|所有文件(*.*)|*.*";

            if (saveFileDialog.ShowDialog(this) == DialogResult.OK)

            {

                string FileName = saveFileDialog.FileName;

            }

        }

 

        private void ExitToolsStripMenuItem_Click(object sender, EventArgs e)

        {

            this.Close();

        }

 

        private void CloseAllToolStripMenuItem_Click(object sender, EventArgs e)

        {

            foreach (Form childForm in MdiChildren)

            {

                childForm.Close();

            }

        }

 

        private void 开课情况查询ToolStripMenuItem_Click(object sender, EventArgs e)

        {

            开课情况查询 k = new 开课情况查询();

            k.Show();

        }

 

        private void 学生成绩查询ToolStripMenuItem_Click(object sender, EventArgs e)

        {

            学生成绩查询 q = new 学生成绩查询();

            q.Show();

        }

 

        private void 帮助ToolStripMenuItem_Click(object sender, EventArgs e)

        {

            help u = new help();

            u.Show();

        }

 

        private void MDIParent2_Load(object sender, EventArgs e)

        {

 

        }

    }

}

 C#语言实现《学生成绩管理系统》_第3张图片

开课情况查询.cs

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 student_test1

{

    public partial class 开课情况查询 : Form

    {

        public 开课情况查询()

        {

            InitializeComponent();

        }

 

        private void 开课情况查询_Load(object sender, EventArgs e)

        {

            // TODO: 这行代码将数据加载到表“dataSet1.kc”中。您可以根据需要移动或删除它。

            this.kcTableAdapter.Fill(this.dataSet1.kc);

 

        }

 

        private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)

        {

 

        }

    }

}

 C#语言实现《学生成绩管理系统》_第4张图片

学生成绩查询.cs

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 System.Data.SqlClient;

using System.Data.Odbc;

 

namespace student_test1

{

    public partial class 学生成绩查询 : Form

    {

        public 学生成绩查询()

        {

            InitializeComponent();

        }

 

        private void 学生成绩查询_Load(object sender, EventArgs e)

        {

            // TODO: 这行代码将数据加载到表“dataSet1.cjpm”中。您可以根据需要移动或删除它。

            this.cjpmTableAdapter.Fill(this.dataSet1.cjpm);

 

        }

 

        private void chaxun_Click(object sender, EventArgs e)

        {

            string str = "dsn=jhh;uid=sa;pwd=sa";

 

            string sqlstr = "select cjpm.学号,cjpm.姓名,cjpm.班级,cjpm.总分,cjpm.排名 from cjpm where  cjpm.学号='" + xuehao.Text.Trim() + "'";

            OdbcConnection conn = new OdbcConnection(str);

            conn.Open();

            OdbcDataAdapter da = new OdbcDataAdapter(sqlstr, conn);

            DataSet qa = new DataSet();

            da.Fill(qa, "学生成绩表");

            DataTable dt = qa.Tables["学生成绩表"];

            dataGridView1.DataSource = dt;

            conn.Close();

 

        }

 

        private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)

        {

 

        }

    }

}

 C#语言实现《学生成绩管理系统》_第5张图片

学生信息维护.cs

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 System.Data.SqlClient;

using System.Data.Odbc;

 

namespace student_test1

{

    public partial class 学生信息维护 : Form

    {

        public 学生信息维护()

        {

            InitializeComponent();

        }

 

        private void 学生信息维护_Load(object sender, EventArgs e)

        {

// TODO: 这行代码将数据加载到表“dataSet1.Xsxx”中。您可以根据需要移动或删除它。

this.xsxxTableAdapter.Fill(this.dataSet1.Xsxx);

 

        }

 

        private void tianjia_Click(object sender, EventArgs e)

        {

            //定义一个初始值n=0, 用于判断后期是否成功插入数据

            int n = 0;

            int m = 0;

            string sqlsno = "select 学号 from Xsxx where (学号 like '" + xuehao.Text.Trim() + "')";

            string sql = "insert into Xsxx (学号,姓名,性别,班级,年龄) values ('" + xuehao.Text + "','" + xingming.Text + "','" + xingbie.Text + "','" + banji.Text + "','" + Convert.ToString(nianling.Text) + "')";

            //判断插入的数据是否为空,如果为空,则提示重新插入!

            if (xuehao.Text.Trim() == "" || xingming.Text.Trim() == "" || xingbie.Text.Trim() == "" || banji.Text.Trim() == "" || nianling.Text.Trim() == "")

            {

                MessageBox.Show("插入数据不能为空,请按要求插入数据!");

                return;

            }

            else if (int.TryParse(xuehao.Text, out m) == false || int.TryParse(banji.Text, out m) == false || int.TryParse(nianling.Text, out m) == false)

            {

                MessageBox.Show("请输入数字", "提示");

                return;

            }

            else if (Convert.ToInt32(this.nianling.Text.Trim()) < 0)

            {

                MessageBox.Show("年龄输入有错,请重新输入");

                return;

            }

            string str = Properties.Settings.Default.ConnectionString;

            OdbcConnection conn = new OdbcConnection(str);

            conn.Open();

            OdbcCommand cmdsno = new OdbcCommand(sqlsno, conn);

            OdbcDataReader sdr = cmdsno.ExecuteReader();             

            OdbcCommand cmd = new OdbcCommand(sql, conn);

                

                //cmd.Parameters.AddRange(param);

 

                 n = cmd.ExecuteNonQuery();

                if (n == 0)

                {

                    MessageBox.Show("添加失败!");

                    return;

                }

                else if (n > 0)

                {

                    MessageBox.Show("添加成功!");

                }

                conn.Close();

                //调用refresh方法,在添加完成数据后 自动刷新 显示新数据

                Refresh();

                this.xsxxTableAdapter.Fill(this.dataSet1.Xsxx);

        //   }

           conn.Close();

      }

 

        private void shanchu_Click(object sender, EventArgs e)

        {

        if (MessageBox.Show("确认删除?", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Question, MessageBoxDefaultButton.Button2) == DialogResult.OK)

            {

                //使用sql删除语句

                string sqlxsxx = "delete from Xsxx where 1=1";

                string sqlxscj = "delete from xscj where 1=1";

                string sqlcjpm = "delete from cjpm where 1=1";

                sqlxscj = sqlxscj + "and 学号=" + xuehao.Text;

                sqlxsxx = sqlxsxx + "and 学号=" + xuehao.Text;

                sqlcjpm = sqlcjpm + "and 学号=" + xuehao.Text;

                //}

                int n = 0;

             string str = Properties.Settings.Default.ConnectionString;

             OdbcConnection Conn = new OdbcConnection(str);

            Conn.Open();

 

            OdbcCommand cmdxsxx = new OdbcCommand(sqlxsxx, Conn);

                n = cmdxsxx.ExecuteNonQuery();

                OdbcCommand cmdxxxx = new OdbcCommand(sqlxscj, Conn);

                cmdxxxx.ExecuteNonQuery();

                OdbcCommand cmdcjpm = new OdbcCommand(sqlcjpm, Conn);

                cmdcjpm.ExecuteNonQuery();

                if (n == 0)

                {

                    MessageBox.Show("不存在学号!");

                    return;

 

                }

                else if (n > 0)

                {

                    MessageBox.Show("删除成功!");

                }

                Conn.Close();

                //删除完后 刷新一下当前数据

                Refresh();

                this.xsxxTableAdapter.Fill(this.dataSet1.Xsxx);

            }

        }

 

        private void xiugai_Click(object sender, EventArgs e)

        {

            int m = 0;

            //在对数据进行修改之前 对文本框的内容做一下检查, 如果为空 则提示重新输入

            if (xuehao.Text.Trim() == "" || nianling.Text.Trim() == "" || xingbie.Text.Trim() == "" || xingming.Text.Trim() == "" || banji.Text.Trim() == "")

            {

                MessageBox.Show("文本框的输入不能为空!");

                return;

            }

            else if (int.TryParse(xuehao.Text, out m) == false || int.TryParse(nianling.Text, out m) == false || int.TryParse(banji.Text, out m) == false)

            {

                MessageBox.Show("请输入数字", "提示");

                return;

            }

            else if (Convert.ToInt32(this.nianling.Text.Trim()) < 0)

            {

                MessageBox.Show("年龄输入有错,请重新输入");

                return;

            }

            //使用SQL update 更新语句

            //获取文本框中输入的内容, 通过SNO进行更新(SNO为当前鼠标点击行的Id)

            string sqlUpdate = "update Xsxx set 学号 ='" + xuehao.Text + "',年龄 ='"

             + nianling.Text + "',性别='" + xingbie.Text + "',姓名='" + xingming.Text + "',班级='" + banji.Text + "'where 学号='" + dataGridView1.CurrentRow.Cells[0].Value.ToString() + "'";

             string str = Properties.Settings.Default.ConnectionString;

             OdbcConnection Conn = new OdbcConnection(str);

            Conn.Open();

            OdbcCommand cmdUpdate = new OdbcCommand(sqlUpdate, Conn);

            int n = 0;

            try

            {

                n = cmdUpdate.ExecuteNonQuery();

            }

            catch

            {

                

                    //提示更新失败

                    MessageBox.Show("更新失败!");

                    return;// 并且返回

            }

            if (n > 0)

                {

                    //否则更新成功

                    MessageBox.Show("修改成功!");

                }

            //执行完数据更新操作后 需要关闭数据库 节省资源

            Conn.Close();

            //更新完以后  调用刷新方法,将更新后的数据 显示在datagridview上面

 

            Refresh();

            this.xsxxTableAdapter.Fill(this.dataSet1.Xsxx);

        }

 

       

 

        private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)

        {

         if (this.dataGridView1.SelectedRows.Count < 1)

            {

                return;

            }

            this.xuehao.Text = this.dataGridView1.CurrentRow.Cells["学号"].Value.ToString();

            this.xingming.Text = this.dataGridView1.CurrentRow.Cells["姓名"].Value.ToString();

            this.xingbie.Text = this.dataGridView1.CurrentRow.Cells["性别"].Value.ToString();

            this.nianling.Text = this.dataGridView1.CurrentRow.Cells["年龄"].Value.ToString();

            this.banji.Text = this.dataGridView1.CurrentRow.Cells["班级"].Value.ToString();

        }

 

        private void xuehao_TextChanged(object sender, EventArgs e)

        {

 

        }

        }

    }

 C#语言实现《学生成绩管理系统》_第6张图片

       学生成绩维护.cs

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 System.Data.SqlClient;

using System.Data.Odbc;

 

namespace student_test1

{

    public partial class 学生成绩维护 : Form

    {

        public 学生成绩维护()

        {

            InitializeComponent();

        }

 

        private void 学生成绩维护_Load(object sender, EventArgs e)

        {

            // TODO: 这行代码将数据加载到表学生成绩管理DataSet2.cjwh”中。您可以根据需要移动或删除它。

            this.cjwhTableAdapter.Fill(this.学生成绩管理DataSet2.cjwh);

 

        }

 

        private void tianjia_Click(object sender, EventArgs e)

        {

            //定义一个初始值n=0, 用于判断后期是否成功插入数据

            int n = 0;

            int m = 0;

            string sqlsno = "select 学号 from cjwh where (学号 like '" + xuehao.Text.Trim() + "')";

            string sql = "insert into cjwh (学号,课程号,成绩) values ('" + xuehao.Text + "','" + kechenghao.Text + "','" + chengji.Text + "')";

            //判断插入的数据是否为空,如果为空,则提示重新插入!

            if (xuehao.Text.Trim() == "" || kechenghao.Text.Trim() == "" || chengji.Text.Trim() == "" )

            {

                MessageBox.Show("插入数据不能为空,请按要求插入数据!");

                return;

            }

            else if (int.TryParse(xuehao.Text, out m) == false || int.TryParse(kechenghao.Text, out m) == false || int.TryParse(chengji.Text, out m) == false)

            {

                MessageBox.Show("请输入数字", "提示");

                return;

            }

            

           

            string str = Properties.Settings.Default.ConnectionString;

            OdbcConnection conn = new OdbcConnection(str);

            conn.Open();

            OdbcCommand cmdsno = new OdbcCommand(sqlsno, conn);

           /* OdbcDataReader sdr = cmdsno.ExecuteReader();

            if (sdr.Read())

            {

                MessageBox.Show("该学号已存在,请重新输入!");

                return;

            }

            else*/

            {

 

                OdbcCommand cmd = new OdbcCommand(sql, conn);

 

                //cmd.Parameters.AddRange(param);

 

                n = cmd.ExecuteNonQuery();

                if (n == 0)

                {

                    MessageBox.Show("添加失败!");

                    return;

                }

                else if (n > 0)

                {

                    MessageBox.Show("添加成功!");

               }

                conn.Close();

                //调用refresh方法,在添加完成数据后 自动刷新 显示新数据

                Refresh();

                this.cjwhTableAdapter.Fill(this.学生成绩管理DataSet2.cjwh);

           }

            conn.Close();

        }

 

        private void xiugai_Click(object sender, EventArgs e)

        {

            int m = 0;

            //在对数据进行修改之前 对文本框的内容做一下检查, 如果为空 则提示重新输入

            if (xuehao.Text.Trim() == "" || kechenghao.Text.Trim() == "" || chengji.Text.Trim() == "" )

            {

                MessageBox.Show("文本框的输入不能为空!");

                return;

            }

            else if (int.TryParse(xuehao.Text, out m) == false || int.TryParse(kechenghao.Text, out m) == false || int.TryParse(chengji.Text, out m) == false)

            {

                MessageBox.Show("请输入数字", "提示");

                return;

            }

            

            //使用SQL update 更新语句

            //获取文本框中输入的内容, 通过SNO进行更新(SNO为当前鼠标点击行的Id)

            string sqlUpdate = "update cjwh set 学号 ='" + xuehao.Text + "',课程号 ='"

             + kechenghao.Text + "',成绩='" + chengji.Text + "'where 学号='" + dataGridView1.CurrentRow.Cells[0].Value.ToString() + "'and 课程号='" + dataGridView1.CurrentRow.Cells[1].Value.ToString() + "'";

             string str = Properties.Settings.Default.ConnectionString;

             OdbcConnection Conn = new OdbcConnection(str);

            Conn.Open();

            OdbcCommand cmdUpdate = new OdbcCommand(sqlUpdate, Conn);

            int n = 0;

            try

            {

                n = cmdUpdate.ExecuteNonQuery();

            }

            catch

            {

                

                    //提示更新失败

                    MessageBox.Show("更新失败!");

                    return;// 并且返回

            }

            if (n > 0)

                {

                    //否则更新成功

                    MessageBox.Show("修改成功!");

                }

            //执行完数据更新操作后 需要关闭数据库 节省资源

            Conn.Close();

            //更新完以后  调用刷新方法,将更新后的数据 显示在datagridview上面

 

            Refresh();

 

            this.cjwhTableAdapter.Fill(this.学生成绩管理DataSet2.cjwh);

            }

 

        private void shanchu_Click(object sender, EventArgs e)

        {

            

            if (MessageBox.Show("确认删除?", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Question, MessageBoxDefaultButton.Button2) == DialogResult.OK)

            {

                //使用sql删除语句

                //string sqlxsxx = "delete from Xsxx where 1=1";

                string sqlcjwh = "delete from cjwh where 1=1";

                //string sqlcjpm = "delete from cjpm where 1=1";

                //sqlxsxx = sqlxsxx + "and 学号=" + xuehao.Text;

                sqlcjwh = sqlcjwh + "and 学号=" + xuehao.Text+"and 课程号=" + kechenghao.Text+"and 成绩=" + chengji.Text;

               // sqlcjpm = sqlcjpm + "and 学号=" + xuehao.Text;

                //}

                int n = 0;

             string str = Properties.Settings.Default.ConnectionString;

             OdbcConnection Conn = new OdbcConnection(str);

            Conn.Open();

 

        

                OdbcCommand cmdcjwh = new OdbcCommand(sqlcjwh, Conn);

                n = cmdcjwh.ExecuteNonQuery();

           

                if (n == 0)

                {

                    MessageBox.Show("不存在学号!");

                    return;

 

                }

                else if (n > 0)

                {

                    MessageBox.Show("删除成功!");

                }

                Conn.Close();

                //删除完后 刷新一下当前数据

                Refresh();

                this.cjwhTableAdapter.Fill(this.学生成绩管理DataSet2.cjwh);

            }

        }

 

        private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)

        {

            if (this.dataGridView1.SelectedRows.Count < 1)

            {

                return;

            }

            this.xuehao.Text = this.dataGridView1.CurrentRow.Cells["学号"].Value.ToString();

            this.kechenghao.Text = this.dataGridView1.CurrentRow.Cells["课程号"].Value.ToString();

            this.chengji.Text = this.dataGridView1.CurrentRow.Cells["成绩"].Value.ToString();

           

        }

        }

    }

 

 

 

Help.cs

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 student_test1

{

    public partial class help : Form

    {

        public help()

        {

            InitializeComponent();

        }

 

        private void help_Load(object sender, EventArgs e)

        {

            // TODO: 这行代码将数据加载到表“dataSet1.cjpm”中。您可以根据需要移动或删除它。

            this.cjpmTableAdapter.Fill(this.dataSet1.cjpm);

 

        }

    }

}

四、 操作说明

管理员登录账号密码: jhh(账号),123(密码);

普通用户登录账号密码:hhj(账号),456(密码);

在两个维护界面中,修改/删除部分需选中所要修改/删除学生的整行信息进行操作;

 

 


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