SQL in c#

code.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using MySql.Data.MySqlClient;

namespace labrat
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void button2_Click(object sender, EventArgs e)
        {
            string connetionString = null;
            MySqlConnection cnn;
            connetionString = "server=hackathon.cpdtrttdjtod.ap-south-1.rds.amazonaws.com;database=nap;uid=clu;pwd=lingayas;";
            cnn = new MySqlConnection(connetionString);
            try
            {
                cnn.Open();
                string query = "insert into nap.datanet (download_speed,upload_speed,score,name,mac) values ('al','al','al','al','al')";
                MySqlCommand cmdbase = new MySqlCommand(query, cnn);
                MySqlDataReader myreader;
                myreader = cmdbase.ExecuteReader();

                MessageBox.Show("Connection Open ! ");
                cnn.Close();
            }
            catch (Exception ex)
            {
                MessageBox.Show("Can not open connection ! ");
            }
        }
    }
}