iis连接mysql错误日志

using Microsoft.AspNetCore.Mvc;
using MySql.Data.MySqlClient;
using System;
using System.Data;

public class HomeController : Controller
{
    public IActionResult Index()
    {
        string connectionString = "Server=your_mysql_server;Database=your_database;Uid=your_username;Pwd=your_password;";
        using (MySqlConnection connection = new MySqlConnection(connectionString))
        {
            try
            {
                connection.Open();
                string query = "SELECT * FROM your_table";
                using (MySqlCommand command = new MySqlCommand(query, connection))
                {
                    using (MySqlDataReader reader = command.ExecuteReader())
                    {
                        while (reader.Read())
                        {
                            // Process the data
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                // Log the exception
                Console.WriteLine(ex.Message);
            }
        }
        return View();
    }
}