MySql数据库基础操作

引用MySql的DLL，可以直接百度获取。
增删改查

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using MySql.Data.MySqlClient;

namespace MySQL数据库操作
{
    class Program
    {
        static void Main(string[] args)
        {
            string conStr = "Database=test007;Data Source=127.0.0.1;port=3306;User Id=root;Password=1234;";//进行连接前的配置
            MySqlConnection connection = new MySqlConnection(conStr);//连接数据库

            connection.Op en();//打开连接
            #region 查询
            //MySqlCommand command = new MySqlCommand("select * from user", connection);//选择读取那个列

            //MySqlDataReader reader = command.ExecuteReader();//读取数据

            //while (reader.Read())//判断是否读取到了
            //{

            //    string usename = reader.GetString("usename");//读取  列下数据
            //    string password = reader.GetString("password");
            //    Console.WriteLine(usename + "." + password);
            //}

            //reader.Close();//关闭数据读取
            #endregion

            #region 插入
            //string usename = "cwer"; string password = "lcker';delete from user;";
            MySqlCommand cmd = new MySqlCommand("insert into user set usename='" + usename + "'" + ",password='" + password + "'", connection);//添加数据usename即cwer插入到usename列下注此处的名字必须和数据库中列的表头相同不然报错。容易被串改，误用
            //MySqlCommand cmd = new MySqlCommand("insert into user set usename=@un,password=@pwd", connection);//此步骤和下面两个可以有效防止恶意删改

            //cmd.Parameters.AddWithValue("un", usename);
            //cmd.Parameters.AddWithValue("pwd", password);


            //cmd.ExecuteNonQuery();//插入

            #endregion

            #region 删除
            //MySqlCommand cmd = new MySqlCommand("delete from user where id=@id", connection);
            //cmd.Parameters.AddWithValue("id", 19);
            //cmd.ExecuteNonQuery();

            #endregion

            #region 更新
            //MySqlCommand cmd = new MySqlCommand("update user set password =@psw where id=18", connection);
            //cmd.Parameters.AddWithValue("psw", "siki.com1");

            //cmd.ExecuteNonQuery();//执行
            //                      //connection.Close();//关闭连接
            #endregion


            Console.ReadKey();
        }
    }
}

            string usename = "cwer"; string password = "lcker';delete from user;";         
            MySqlCommand cmd = new MySqlCommand("insert into user set usename=@un,password=@pwd", connection);//此步骤和下面两个可以有效防止恶意删改
            cmd.Parameters.AddWithValue("un", usename);
            cmd.Parameters.AddWithValue("pwd", password);