WindowsFormsApplication

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 只是不想把我的实验科目永远只是停留在我的电脑上  如果你是学这行技术的可以借鉴也可以提出批评  如果你不是学这个的  也可以帮你看看windows桌面窗体软件的一些简单的原理  技术的天堂因青春的激情而狂热  动人的音符因小伙伴们的支持而跳动对于界面UI  微软那套是可以直接把控件拖出来就用  这里就不多说（这里是用vs2010开发）From1.csusing System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;using System.Data.SqlClient;namespace WindowsFormsApplication1{    public partial class Form1 : Form    {        public Form1()        {            InitializeComponent();        }        public void getConn()        {            SqlConnection sqlConn = null;            try            {                sqlConn = new SqlConnection("Data Source=.\\SQLEXPRESS; AttachDbFilename = D:\\student.mdf; Integrated Security = True;Connect Timeout=30;User Instance=True");                sqlConn.Open();                SqlCommand sqlCmd = new SqlCommand();                sqlCmd.Connection = sqlConn;                sqlCmd.CommandText = "select * from student";                SqlDataReader sqlReader = sqlCmd.ExecuteReader();                while (sqlReader.Read())                {                    listBox1.Items.Add(Convert.ToString(sqlReader["number"]) + Convert.ToString(sqlReader["name"]) + Convert.ToString(sqlReader["sex"]) + Convert.ToString(sqlReader["age"]) + Convert.ToString(sqlReader["special"]));                }            }            catch (Exception ex)            {                Console.WriteLine(ex.Message);            }            finally            {                sqlConn.Close();            }        }        public void getExecuteReader()        {            SqlConnection sqlConn = null;            try            {                sqlConn = new SqlConnection("Data Source=.\\SQLEXPRESS; AttachDbFilename = D:\\student.mdf; Integrated Security = True;Connect Timeout=30;User Instance=True");                sqlConn.Open();                SqlCommand sqlCmd = new SqlCommand();                sqlCmd.Connection = sqlConn;                string queryString1 = "Select * from student where number = '";                string searchNumberValue1 = textBox1.Text;                queryString1 += searchNumberValue1 + "'";                SqlCommand sqlCommand1 = new SqlCommand(queryString1, sqlConn);                SqlDataReader read1 = sqlCommand1.ExecuteReader();                while (read1.Read())                {                    textBox2.Text= Convert.ToString(read1["name"]);                    textBox3.Text = Convert.ToString(read1["sex"]);                    textBox4.Text = Convert.ToString(read1["age"]);                    textBox5.Text = Convert.ToString(read1["special"]);                }                read1.Close();            }            catch (Exception ex)            {                Console.WriteLine(ex.Message);            }            finally            {                sqlConn.Close();            }        }        private void Form1_Load(object sender, EventArgs e)        {                    }        private void button1_Click(object sender, EventArgs e)        {            getExecuteReader();        }        private void button2_Click(object sender, EventArgs e)        {            getConn();        }        private void button3_Click(object sender, EventArgs e)        {            textBox1.Text = "";            textBox2.Text = "";            textBox3.Text = "";            textBox4.Text = "";            textBox5.Text = "";        }        private void button4_Click(object sender, EventArgs e)        {            //listBox1.Items.RemoveAt(0);//删一个下标为零的数据            //listBox1.Items.Remove();//给定要删源数据            listBox1.Items.Clear();            listBox1.Refresh();        }    }}
我们运行程序后点击测试数据按钮测试我们的数据库中的数据已经添加进来
测试清空数据按钮
我们的student数据库中的数据
我们再查找一组数据
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