using MySql.Data.MySqlClient;
using System;
using System.Data;

namespace DatabaseTest
{
    class Program
    {
        private const string SERVER_ADDRESS = "127.0.0.1";
        private const string SERVER_PORT = "3306";
        private const string DATABASE_NAME = "testdb";
	private const string USERNAME = "testuser";
	private const string PASSWORD = "test123";


        static void Main(string[] args)
        {
            string connectionStr = $"Server={SERVER_ADDRESS};Port={SERVER_PORT};Database={DATABASE_NAME};Uid={USERNAME};Pwd={PASSWORD}";

            MySqlConnection con = new MySqlConnection();
            con.ConnectionString = connectionStr;          

            try
            {
                con.Open();

                MySqlCommand cmd = con.CreateCommand();
                cmd.CommandText = "SELECT * FROM testtable";
                var reader = cmd.ExecuteReader();
                DataTable dt = new DataTable();
                dt.Load(reader);

                con.Close();
            }
            catch (MySqlException sqlEx)
            {
                Console.WriteLine(sqlEx.Message);
                Console.WriteLine();
                Console.WriteLine(sqlEx.InnerException?.Message);                
            }

            Console.WriteLine("Press any key to close.");
            Console.ReadKey();
        }
    }
}