6、listview(2)

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 _2015_1_25
{
    public partial class Formsql : Form
    {
        public Formsql()
        {
            InitializeComponent();
        }
        private void button1_Click(object sender, EventArgs e)
        {
            //第一种
            string sqls = "server=.;database=作业;user=sa;pwd=123";
            SqlConnection conn = new SqlConnection(sqls);//数据库连接类
            SqlCommand cmd = conn.CreateCommand();//数据库访问类
            cmd.CommandText = "select *from student";//书写t-sql语句
            conn.Open();//开启连接
            SqlDataReader dr = cmd.ExecuteReader();//执行访问返回数据
            while (dr.Read())//通过read下移指针一行行读取数据
            {
                ListViewItem lt = new ListViewItem();
                lt.Text = dr["sno"].ToString();
                lt.SubItems.Add(dr["sname"].ToString());
                lt.SubItems.Add(dr["ssex"].ToString());
                lt.SubItems.Add(dr["class"].ToString());
                listView1.Items.Add(lt);
            }
            conn.Close();//关闭连接
            //第二种
            string a = "server=.;database=作业;user=sa;pwd=123";
            SqlConnection b = new SqlConnection(a);
            SqlCommand c = b.CreateCommand();
            c.CommandText = "select*from teacher";
            b.Open();
            SqlDataReader d = c.ExecuteReader();
            while (d.Read())
            {
                ListViewItem f = new ListViewItem();
                f.Text = d["tno"].ToString();
                f.SubItems.Add(d["tname"].ToString());
                f.SubItems.Add(d["tsex"].ToString());
                f.SubItems.Add(d["tbirthday"].ToString());
                f.SubItems.Add(d["prof"].ToString());
                f.SubItems.Add(d["depart"].ToString());
                listView1.Items.Add(f);
            }
            b.Close();
        }
    }
}