使用C#进行MySQL的参数化查询

using System;
using MySql.Data.MySqlClient;

class Program
{
    static void Main(string[] args)
    {
        string connectionString = "server=localhost;user=root;password=password;database=mydatabase";
        string query = "SELECT * FROM users WHERE username = @username AND password = @password";

        using (MySqlConnection connection = new MySqlConnection(connectionString))
        {
            connection.Open();

            using (MySqlCommand command = new MySqlCommand(query, connection))
            {
                command.Parameters.AddWithValue("@username", "myusername");
                command.Parameters.AddWithValue("@password", "mypassword");

                using (MySqlDataReader reader = command.ExecuteReader())
                {
                    while (reader.Read())
                    {
                        Console.WriteLine($"Username: {reader["username"]}, Password: {reader["password"]}");
                    }
                }
            }
        }
    }
}