第八次实验报告

1、宁波大学实验报告实验课程名称：数据库应用与开发院： 学专业：信息管理与信息系统指 导 教师：萌报告人 王晓莹学号信管班级：20162017学期：商科实验教学中心制实验成绩实验项目名称模糊一、实验目的与要求：二、实验设备及软件：VS2010三、实验方法（原理、流程图）四、实验过程、步骤及内容代码：using System;using System.Collections.Generic; using System.ComponentM; using System.Data;using System.Drawing; using System.Linq; using Sy

2、stem.Text;using System.Windows.Forms; using System.Data.OleDb;namespace 实害?验é8public partial class Form1 : Formpublic Form1()InitializeComponent();private void dataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)textBox1.Text = dataGridView10, e.RowIndex.Value.ToString(); textBox

3、2.Text = dataGridView11, e.RowIndex.Value.ToString();private void button2_Click(object sender, EventArgs e)OleDbConnection my= new OleDbConnection(); OleDbCommand CMD = new OleDbCommand();/OleDbDataReader Reader; DataSet dt = new DataSet();OleDbDataAdapter adpter = new OleDbDataAdapter();my.Connecti

4、onString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=F:c#程ì序ò设?计?2017-4-5 第 ?五?次?上?机ú实害?验émy.mdb"CMD.Connection = my; my.Open();CMD.CommandText = "select * from 学§生?獁 here 学§号?='" + textBox1.Text + "'"object t = CMD.ExecuteScala

5、r(); if (t != null)MessageBox.Show("错洙?误ó已?存?在ú"); return;CMD.CommandText = "insert into 学§生?学§号?,values('" + textBox1.Text + "','" + textBox2.Text + "')"CMD.ExecuteNonQuery();CMD.CommandText = "select 学§号?,from 学&

6、#167;生?;/dt.Clear(); adpter.SelectCommand = CMD; adpter.Fill(dt, "Database3");dataGridView1.DataSource = dt.Tables"Database3" my.Close();MessageBox.Show("添 ?加ó成é功|");/添 ? ¨?加óó?信?息éprivate void button3_Click(object sender, EventArgs e)OleDb

7、Connection my= new OleDbConnection(); OleDbCommand CMD = new OleDbCommand();/OleDbDataReader Reader; DataSet dt = new DataSet();OleDbDataAdapter adpter = new OleDbDataAdapter();my.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=F:c#程ì序ò设?计?2017-4-5 第 ?五?次?上?机ú实害?

8、验émy.mdb"CMD.Connection = my; my.Open();CMD.CommandText = "select * from 学§生?獁 here 学§号?='" + textBox1.Text + "'"object t = CMD.ExecuteScalar(); if (t = null)MessageBox.Show("不?存?在ú该?学§号?，?删?除 y 失骸?败悒?);CMD.CommandText = "delete fro

9、m 学§生?獁 here 学§号?='" + textBox1.Text+ "'"CMD.ExecuteNonQuery(); dt.Clear();CMD.CommandText = "select * from 学§生?;/CMD.CommandText = "select 学§号?,from 学§生?獁 here 学§号? like '%" + textBox1.Text + "%' order by 学§号?&quo

10、t;adpter.SelectCommand = CMD; adpter.Fill(dt, "Database3");dataGridView1.DataSource = dt.Tables"Database3" my.Close();MessageBox.Show("删?除 y 成é功|");private void button4_Click(object sender, EventArgs e)OleDbConnection my= new OleDbConnection(); OleDbCommand CMD = n

11、ew OleDbCommand();/OleDbDataReader Reader; DataSet dt = new DataSet();OleDbDataAdapter adpter = new OleDbDataAdapter();my.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=F:c#程ì序ò设?计?2017-4-5 第 ?五?次?上?机ú实害?验émy.mdb"CMD.Connection = my; my.Open();CMD.Comm

12、andText = "update 学§生?猻 et 姓?名?='" + textBox2.Text + "'where 学§号?= '"+textBox1.Text+ "'"CMD.ExecuteNonQuery(); dt.Clear();CMD.CommandText = "select * from 学§生?;adpter.SelectCommand = CMD; adpter.Fill(dt, "students");dataGrid

13、View1.DataSource = dt.Tables"students" my.Close();private void button1_Click(object sender, EventArgs e)OleDbConnection my= new OleDbConnection(); OleDbCommand CMD = new OleDbCommand();/OleDbDataReader Reader; DataSet dt = new DataSet();OleDbDataAdapter adpter = new OleDbDataAdapter();my.C

14、onnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=F:c#程ì序ò设?计?2017-4-5 第 ?五?次?上?机ú实害?验émy.mdb"CMD.Connection = my; my.Open();dt.Clear();CMD.CommandText = "select * from 学§生?; adpter.SelectCommand = CMD;adpter.Fill(dt, "Database3"); data

15、GridView1.DataSource = dt.Tables"Database3" my.Close();MessageBox.Show("刷新?成é功|");private void button5_Click(object sender, EventArgs e)OleDbConnection my= new OleDbConnection(); OleDbCommand CMD = new OleDbCommand();/OleDbDataReader Reader; DataSet dt = new DataSet();OleDbD

16、ataAdapter adpter = new OleDbDataAdapter();my.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=F:c#程ì序ò设?计?2017-4-5 第 ?五?次?上?机ú实害?验émy.mdb"CMD.Connection = my; my.Open();dt.Clear();if (comboBox1.Text = "学§号?")CMD.CommandText = "select

17、 学§号?,from 学§生?獁 here 学§ 号?like '%" + textBox3.Text + "%' order by 学§号?"adpter.SelectCommand = CMD; adpter.Fill(dt, "Database3");dataGridView1.DataSource = dt.Tables"Database3" my.Close();MessageBox.Show("学§号?搜?索÷成é功|！?");elseCMD.CommandText = "select 学§号?,rom 学§生?獁 here like '%" + textBox3.Text + "%' order by 学§号?"adpter.Sele