zj-Exercise/C#/WindowsFormsCommandExecuteReader/Form1.cs

using MySql.Data.MySqlClient;
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 WindowsFormsCommandExecuteReader
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        MySqlConnection conn;

        private void button1_Click(object sender, EventArgs e)
        {
            //创建数据库连接对象
            conn = new MySqlConnection("server=localhost;database=csharp;uid=root;pwd=abc123");
            //打开连接
            conn.Open();
            //创建Command对象
            MySqlCommand cmd = new MySqlCommand();
            //设置Command对象的数据库连接
            cmd.Connection = conn;
            cmd.CommandText = "select * from tb_command";
            cmd.CommandType = CommandType.Text;
            MySqlDataReader sdr = cmd.ExecuteReader();
            //Read方法用来读取只读数据流中的每条记录
            while (sdr.Read())
            {
                listView1.Items.Add(sdr[1].ToString());
            }
            conn.Dispose();
            button1.Enabled = false;
        }
    }
}